Ffmpeg input stream. Ask Question Asked 7 years ago.

Ffmpeg input stream I was playing with it, and got the following example: Thanks for feedback, we are trying to add/remove inputs on the fly without restarting ffmpeg so that when we do rtmp streaming clients don't get disconnected. I couldn't get it to work but for anyone to try: # compiled with --enable-libzmq ffmpeg -i INPUT -filter_complex 'null[main];movie=INPUT2,zmq,lumakey@toggle=tolerance=1,[main]overlay,realtime' int64_t InputFile::input_ts_offset: Definition at line 402 of file ffmpeg. 1:23000 Along with @Omy's answer be sure to add -re before the input to ensure realtime (normal) livestreaming than sending too many UDP payloads at once. 264 streams into a single H. dts I managed to run ffmpeg in Android Studio project, but don't know how to set the Android's camera as the input of ffmpeg. FFmpeg preistalled for Docker and Hass Add-on users; Hass Add-on users can target files from /media folder; Format: ffmpeg:{input}#{param1}#{param2}#{param3}. Viewed 3k times 1 . Definition at line 249 of file ffmpeg. Here's a basic example of how to stream a video file to a remote server using the RTMP protocol: Write the buffer stream to a temp directory using ffmpeg-stream . Ffmpeg won't pull the files that are online for you, you have to pull them yourself, this can be done by using call GET on the stream url which returns a file containing addresses of . We are able to ffmpeg -i udp://localhost:1234 -vcodec copy output. FFMPEG udp input stream and input stream play local file. mp4 The -map option makes ffmpeg only use the first video stream from the first input and the first audio stream from the second input for I don't have a definitive answer, but if you want to adjust your start time to be on a keyframe, you can run the following ffprobe command to determine where the nearest keyframe is:. Using FFmpeg, it creates a video stream out of the copied images. 4. mp4 -f rtsp -rtsp_transport tcp rtsp://localhost:8554/live. Multiple Video Streams in one Feed ffmpeg. Remove a specific audio stream / track ffmpeg -i input -map 0 -map -0:a:2 -c copy output -map 0 selects all streams from the input. sdp -filter_complex Or you could do a point to point type stream, like: ffmpeg -i INPUT -acodec libmp3lame -ar 11025 -f rtp rtp://host:port where host is the receiving IP. 221 MPEG TS 1358 Source port: 51718 Destination port: scp-config 1068 1. . Is this supported for all file formats? For input protocols it has no such restriction. Official documentation: vflip. -1 for unlimited. I want to stream some videos (a dynamic playlist managed by a python script) to a RTMP server, and i'm currently doing something quite simple: streaming my videos one by one with FFMPEG to the RTMP server, however this causes a connection break every time a video end, and the stream Definition at line 243 of file ffmpeg. Outputs from complex filtergraphs are automatically mapped to the first output so manual mapping is not required. mp4 -c:v ffmpeg -re -i input -f rtsp -rtsp_transport tcp rtsp://localhost:8888/live. In this tutorial, we’ll see how to use FFmpeg to stream our webcam over the most common network protocols. 0 update Unifi Protect Cameras had a change in audio sample rate which causes issues for ffmpeg. I have two files, specified by streams. It brings seeking capability to live streams. stream When I'm trying to stream the video of my C++ 3D application (similar to streaming a game). Hot Network Questions 310 Volt Brushless DC Motor Advantages Dehn-twist on punctured 3-manifold Sense of parking names at GCTS Will a body deform if there is very huge force acting on it in a specific direction? For example to take snapshots or playing different video/audio streams from input memory-stream file. I need to make this chain: JVC HM650--UDP-->localhost-->ffmpeg(copy stream)-->nginx-rtmp. c Definition at line 220 of file ffmpeg. But, for the Found the answer: This person provided a solution to my problem. That's why VLC shows a single stream. Definition at line 203 of file ffmpeg. mp4', shortest=None, vcodec='copy') . I know I can do it in a different way, simply convert, but this is the beginning of a project where I am attempting to use ffmpeg to record an HLS Livestream, described by input. mp4 output. a network stream or stdin or an optical disc or something else). Share Sort by: Best. ffmpeg. Now I have have 2 question: 1-Can I get all channel and service via this ffmpeg code? 2-Can I choose a special stream from this ffmpeg code?(I know that ffmpeg can choose a stream with -map option but I want to choose other service_name that in output log) I am using ffmepg to stream via RTSP from a webcam to my server. I'm currently trying to write a custom SoundFileReader for SFML using ffmpeg's libraries. FFmpeg is ran with the following command: ffmpeg -loop 1 -i . . From another terminal I launch ffmpeg to stream with this command and it works: sudo This format flag reduces the latency introduced by buffering during initial input streams analysis. RedirectStandardOutput = true and StartupInfo. Here we select the first and second streams for both files. Scrypted transcodes various camera feed protocols to others as needed using a plugin architecture. So the correct command is: ffmpeg -i INPUT -f pulse -device playback-device "stream name" Note-re option will slow down the reading: "Read input at native frame rate. Some free online services will help I'm experimenting with streaming video using the following basic method, which works fine: $ ffmpeg -re -i INPUT -f mpegts udp://127. In case you are looking for shoutcast metadata Since FFmpeg 2. Referenced by close_input_file(), Generated on Fri Dec 6 2024 19:23:51 for FFmpeg by Examples Streaming your desktop. Examples: Multiple stream inputs/outputs in fluent-ffmpeg. If you need any help with the streams: your_reolink_camera:-"ffmpeg: In the Unifi 2. macOS can use avfoundation. InputStream Client for streams that can be opened by either FFmpeg's libavformat or Kodi's cURL. Cache the input stream to temporary file. srt -i input. FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. Implementation. Viewed 3k times 1 I have a System. This stream comes in at a high resolution (2560 x 1980) at only 2fps. NET Core. Influencing the Quality. 193. ffmpeg -i %3d. A packet contains one or more encoded frames which belongs to a single elementary stream. Ask Question Asked 6 years ago. 2. I want to create two hls streams: Resolution of 800x600 with h264 encoding and and 0. and then with the command. For example, a) encode video With FFmpeg, you can take an input source, such as a camera or a screen capture, encode it in real-time, and send it to a streaming server. zoompan (stream, **kwargs) ¶ Apply Zoom & Pan effect. mp4 Replace 1234 with your port. Remember to specify the f option, which specifies the format of the input data. int InputStream::decoding_needed: Definition at line 221 of file ffmpeg. 0 - avformat. mp3') ( ffmpeg . I am using nodejs. By default ffmpeg attempts to read the input(s) as fast as possible. input. I have a application is being the "middle man" receiving a video stream from a source via UDP and passing this video stream to a ffmpeg instance on a server and ffmpeg -i <input video file/stream> -vcodec rawvideo -acodec pcm_s16le pipe:1 | ffmpeg -f rawvideo -i - -vcodec <video output codec> -acodec <audio output codec> -vb <video bitrate if applicable> -ab <audio bitrate if applicable> <final-output-filename> This worked for me when I last tried, but my goal was to pipe ffmpeg into ffplay, which is a I am trying to launch up a rtmp transcoder server using ffmpeg; that receives udp MPEG-TS streams as input, transcodes it; and generates an rtmp output to a URL, that can be accessed by users to receive and play the rtmp stream. Ask Question Asked 6 years, 8 months ago. y – Set the y expression. I'd like to limit this output stream so that there are 10 megabytes of data stored at maximum at any time. ffmpeg -i INPUT -itsoffset 5 -i INPUT -map 0:v -map 1:a OUTPUT adjusts timestamps of the input audio stream(s) only. 264 stream. sdp -i b. How to merge multiple H. This is the same as specifying an input on the command line. 3. My stream was created with this: ffmpeg -f v4l2 -input_format h264 -video_size 640x480 -framerate 30 -i /dev/video0 -preset ultrafast -tune zerolatency -vcodec copy -f h264 udp://machine:1500 Your code worked for me after I changed. My test environment is streaming from localhost to localhost, on a macOS machine. 264 video stream (which starts with hex 00 00 01 FC , a 3-byte start code followed by a NAL unit). If you don't have these installed, you can add them: sudo apt install vlc ffmpeg In the example I use an mpeg transport stream (ts) over http, instead of rtsp. txt -map 0:0 -map 0:1 -map 0:2 -c:v copy -c:a:0 copy -c:a:1 copy output. Set the icy AVOption to 1 when calling avformat_open_input. 1 m=audio 2002 RTP/AVP 96 a=rtpmap:96 L16/16000 Use sdp files as input in FFmpeg: ffmpeg -i a. Record rtmp stream to multi flv files. How could I sync the different sources in the output? You could then use this stream as input and live transcode it to something else. I tried (try&error) to save the first package ffmpeg sends and send this at the beginning of a new connection, then the current stream. FFmpeg can basically stream through one of two ways: It either streams to a some "other server", which re-streams for it to multiple clients, or it can stream via UDP/TCP directly to some single To have FFmpeg act as an HTTP server, you need to pass the -listen 1 option. I'm having a hard finding a simple solution to showcase the srt streaming protocol with FFmpeg. But I would expect ffmpeg to stop reading after the first frame. From APIChanges: 2011-06-16 - 2905e3f / 05e84c9, 2905e3f / 25de595 - lavf 53. 2 I'm trying to use ffmpeg to stream a webcam with as close to zero latency as possible. what will be the correct command to use for ffmpeg to "cache" few seconds of the input stream (input is mpegts) before emitting the stream out as is ? Given a file input. Merge Multiple Videos using node fluent ffmpeg. All these are expected to be performed in a LAN and the output be accessed by all users. The problem was it uses too much CPU. Referenced by add_input_streams(), check_keyboard_interaction() Definition at line 207 of file ffmpeg. 1. /test. But i could't do it. Apart everything works - I can play input on VLC, I can stream from FMLE to nginx etc. How can I merge these two files together? I tried using the command ffmpeg -y \ -i " ffmpeg Map with multiple input files. 1:2000 $ ffplay udp://127. 89:554/11 -f image2 -r 1 thumb%03d. ffmpeg 2. You use avformat_open_input() for all inputs. Takes about 5 seconds to load once opened in VLC; Timer stays stuck on the same second for multiple minutes; My hunch here for the stream being stuck on 1 timestamp is that while ffmpeg is sending frames out at 30 frames per second, I'm sending it frames much quicker than that. example (output is in PCM signed 16-bit little-endian format): cat file. Ask Question Asked 7 years, 8 months ago. x – Set the x expression. sdp It does start streaming the video in real-time but I don't actually see any options to control the media stream like playback, record etc! In this command, -c:v copy tells FFmpeg to copy the video stream as-is, and -c:a flac tells FFmpeg to encode the audio stream using the FLAC codec. c I know ffmpeg is able to read data from stdin rather than reading from disk using ffmpeg -i -. Modified 7 years, 8 months ago. duration must be a time duration specification, see (ffmpeg-utils)the Time duration section in the ffmpeg-utils(1) manual. char *format = "h264"; My guess is that your stream isn't in the format you think it The following are 30 code examples of ffmpeg. Windows users can use dshow, gdigrab or ddagrab. Parameters. method createInputFromFile(file: string, options: Options): void. ffmpeg - switch rtmp streams into a single encoded output? Hot Network Questions What is the origin of "Arsch offen haben"? I have been trying to stream local video on VLC using the FFmpeg library like this: $ ffmpeg -i sample. mp4 -v 0 -vcodec mpeg4 -f mpegts udp://127. h. 5fps; Crop part of the input stream and convert it as h264 as well with 0. jpg etc. ffmpeg: output_args: record: preset-record-ubiquiti. On input I have UDP stream from camera (udp://@:35501) and I need it to publish to rtmp server (nginx with rtmp module). Is there no Skip to main content. ffmpeg -f decklink -i 'DeckLink Mini Recorder' -vf setpts=PTS- then I'm afraid to say you will need to code a "switcher" (probably, if streaming, the stream is going to stop). I'm new to Go! I'm doing a simple test that is reading the output from ffmpeg and writing to a file. mp4 file. The addon also Using -map helps with specifying which input goes with which output. UseShellExecute = false. In FFmpeg, the parameters come before the input/output, for that specific input/output. Contribute to t-mullen/fluent-ffmpeg-multistream development by creating an account on GitHub. For instance, So: Configure Video Mixer source filter to get video from WebRTC source filter (which, in turn will receive your published stream from Unreal Media Server). Additionally, -f mp4 will result in a non-fragmented MP4, which is not suitable for streaming. e. mkv), you must work directly with some libs (such as libavcodec etc). I am flagging this as an answer because it does go in the right direction. -f segment: This tells ffmpeg to use the segment muxer, which divides the output into multiple files. This will set the Icy-MetaData HTTP header when opening the stream:. The only thing I have available to use with avcodec and avformat is the class InputStream below which is part of SFML. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. m3u8, input_02. The app will automatically start FFmpeg with the proper arguments when someone starts watching the stream. mp4 -c:s mov_text -c:a copy -c:v copy output. m3u8. 221 MPEG TS 1358 Source port: 40892 Destination port: documentum-s[Malformed ffmpeg-streamer is a packaged nodejs express server that wraps ffmpeg to allow easy streaming of video feeds directly to modern browsers for testing purposes. Combine this with my image sequencing goal the process looks like this on python: I tried to exchange the different inputs (e. Referenced by add_input_streams(), do_video_out(), ifile_get_packet(), and process_input_packet(). mp4: output file name pattern. 1 is ahead of 10. output(audio_part. FFMPEG output to multiple rtmp and synchronize them. Range is -1 to INT_MAX. Open comment sort options. c#; ffmpeg; Share. -map -0:a:2 then deselects audio stream 3. How to input system. 11. -re (input) Read input at the native frame rate. I am sure these settings work if the input format is RAW audio WITHOUT Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am subscribing to an input stream from tvheadend using ffmpeg and I am writing that stream to disk continuously . New. I currently use the following to get 10mn of video (with h264 transcoding). Mainly used to simulate a grab device, or live input stream (e. – Defines an ffmpeg input stream. Should not be used with actual grab devices or live input streams (where it can cause packet loss). Another suggestion: Im currently working on streaming a mp4 file encoded with h264 over TCP and decoding at the mobile side (Android). Hot Network Questions Movie where a family crosses through a dimensional portal and end up having to fight for power Listing ongoing grant application on CV How to set the limits of a I'm using ffmpeg to create time-lapses and it's working great. The documentation for this struct was generated from the following files: Definition at line 331 of file ffmpeg. I have encoded an H. I've looked at avformat_open_input and AVIOContext and I learned how to use custom stream with a buffer but how do I create an AVIOContext that The documentation for this struct was generated from the following files: ffmpeg. 3 to input 0, 10. But my problem comes when I want to Change ffmpeg input while streaming. I know why this can be necessary. I ended up encoding the video first, and then overlaying the audio with the help of another ffmpeg run. There are other This runs fine, but only if the client gets the stream from the beginning with the first package. Saving every nth packet from a UDP stream. video_part = ffmpeg. Command line: From the command line you can use -pattern_type glob -i '*. 1:1234; When running the whole thing together, it works fine for a few seconds until the ffmpeg halts. vflip (stream) ¶ Flip the input video vertically. The :a portion lets ffmpeg know that you want it to use only the audio stream(s) that it reads for that input file and to pass that along to the concat filter. Referenced by add_input_streams(), ffmpeg_cleanup(), and init_input_stream(). Hot Network Questions My assumption is that ffmpeg is reading the input stream into the aforementioned circular buffer, and the code then generates the output stream also reads from that same buffer. wav -c:v copy -c:a aac -map 0:v:0 -map 1:a:0 output. New comments cannot be posted. Generated on Sun May 13 2018 02:04:31 for FFmpeg by The -map option is used to choose which streams from the input(s) should be included in the output(s). Ask Question Asked 3 years, 4 months ago. mp4 or . The returned stream is a writable stream. mp4. Understanding a positive offset By the way, run ffmpeg -layouts to see the names of all valid layouts. I know that you can accept multiple input streams into ffmpeg, and I want to switch between the input streams to create a consistent, single, seamless output. 0 Re-encode video stream only with ffmpeg (and with all audio streams) To solve this you have to create sdp files with the rtp payload type, codec and sampling rate and use these as ffmpeg input. mp4') audio_part = ffmpeg. If it turns out that ffmpeg reads everything, an io. Arguments before -i apply to input(s) and after them they apply to output. In your case, your command would look something like: ffmpeg -sample_rate 44100 -f s16le -i - -ar 22050 -codec copy -f wav - In this case, -ar 44100 and -f s16le apply to the input, since they came before the input. Viewed 9k times 4 . My belief is that ffmpeg (and X264) are somehow buffering the input stream from the webcam during the encoding process. Without scaling the output. char *format = "mpegts"; to. txt which is in the correct format, that both contain an H. 264 video stream, an AC-3 audio stream and an AAC audio stream, and am concatenating the two files using the following ffmpeg command: ffmpeg -f concat -safe 0 -i streams. rtp://127. m3u8 contains a number of different bitrate streams: input_01. 897872161 192. Your command lacked -to before the input: ffmpeg -ss 00:08:50 -to 00:12:30 -i 'https://stream_url_video' Therefore the video stream wasn't cut in the proper place. mp4 -i audio. So, I have the HomeKit plugin (output) installed alongside the UniFi Protect and Ring plugins (input). audio, video_part. sdp ffplay -rtsp_flags listen rtsp://localhost:8888/live. Referenced by add_input_streams(), configure_input_audio_filter() ffmpeg has testsrc you can use as a test source input stream: ffmpeg -r 30 -f lavfi -i testsrc -vf scale=1280:960 -vcodec libx264 -profile:v baseline -pix_fmt yuv420p -f flv rtmp://localhost/live/test Consider adding -re Map all non-video streams conditionally (i. Then, if you have specified a video bitstream filter via the -vbsf command line option, the ffmpeg transcoding one input video stream and multiple output video streams in the same file. I used this code to convert multiple audio files: ffmpeg -i infile1 -i infile2 -map 0 outfile1 -map 1 outfile2 also use -map_metadata to specify the metadata stream: ffmpeg -i infile1 -i infile2 -map_metadata 0 -map 0 outfile1 -map_metadata 1 -map 1 outfile2 I would like to get a multicast with ffmpeg through eth1. m3u8, ; which contain the actual mpeg-ts segmented video files. input(). ; Instead of an output file name, call ffmpeg with pipe:, which will make it write to the standard output. 264, if not, remove the -vcodec copy. jpg if your files are sequential like img000000. mp4 I create the video. You should be able to use the -stream_loop -1 flag before the input (-i): ffmpeg -threads 2 -re -fflags +genpts -stream_loop -1 -i . Defines an ffmpeg input using specified path. There is only one standard input, so there you have it :) In theory, we could handle several stream inputs by piping each of them to a named pipe (UNIX FIFO) and I am receiving a stream over the network with the following ffmpeg command: ffmpeg -i rtmp://server:port/input. 168. Is it possible now? If not, is there some open-sourced projects that can get Android's camera and turn the phone to a rtsp server? Then I can use ffmpeg to get that rtsp link. jpg How can I make FFMPEG die To know how many bytes you need requires you to decoce the video, at which point you probably don't need ffmpeg anymore. exe with input of a raw WidthxHeight RGB or YUV stream and with raw pcm stream. 0. ffprobe -show_frames -show_entries frame=key_frame,pkt_pts_time -read_intervals -i "rtsp://murl>": specifies the input source. mp3 | ffmpeg -f mp3 -i pipe: -c:a pcm_s16le -f s16le pipe: pipe docs are here supported audio types are here The idea is to overlay two streams and toggle the opacity of the top stream, effectively switching stream. Definition at line 218 of file ffmpeg. Referenced by do_video_out(), int InputFile::nb_streams: Definition at line 409 of file ffmpeg. In this case, it’s an RTSP stream from an IP camera. I am capturing thumbnails from a webcam RTMP stream every 1 second to JPG files. Thanks in advance. is because some mp3s had artwork, which, ffmpeg sees as two streams for each input mp3 file, one audio (for the music itself) and one video (for the image artwork file). Therefore, adjusting timestamps only for a single stream requires to specify twice the same input file. FFMpeg - Merge multiple rtmp stream inputs to a single rtmp output. Both of the inputs have video and audio, but I need to merge a stream's audio only, while doing the same with video on the other stream. http and rtmp presets cannot be used with rtsp streams. If I create a file stream from the same file and pass that to fluent-ffmpeg instead I would to do a live streaming with ffmpeg from my webcam. Modified 7 years ago. mp4 I took this error: [NULL @ 0000000002f07060] Packet header is not contained in global extradata, corrupted stream or invalid MP4/AVCC bitstream Failed to open bitstream filter h264_mp4toannexb for stream 0 with codec copy: I How can I merge two input rtp streams in ffmpeg? 1. Modified 3 years, 4 months ago. You can get any stream or file or device via FFmpeg and push it to go2rtc. d – Set the duration expression in number of There is an article that says you can scale a video to be a multiple or fraction of the input size like this: -vf "scale=iw/2:ih/2" to scale by half Are there any other symbols for input FFmpeg is a versatile multimedia CLI converter that can take a live audio/video stream as input. mp4 -c copy . Video Mixer source filter will decompress the stream into RGB24 video and PCM audio. But again, it has no purpose / effect anyway, at least for the nut container format! So I'll just ignore the "guessing" message. /target/target_image. AVDictionary *options = NULL; av_dict_set(&options, "icy", how i can change input on ffmpeg without stop process on linux Debian 9? im user decklink input and i need to change to file mp4 input. note that almost always the input format needs to be defined explicitly. 1:6666, which can be played by VLC or other player (locally). 194. 5fps How to change this buffer that is still 3M. Modified 4 years, 11 months ago. TeeReader. With FFmpeg, you can take an input source, such as a camera or a screen capture, encode it in real-time, and send it to a streaming server. What I ended up doing is filtering the required streams using ffmpeg -map and piping the output to ffprobe -show_frames as follows: ffmpeg -i INPUT -map 0:0 -map 0:1 -c copy -f matroska - | ffprobe -show_frames - Several notes: Another streaming command I've had good results with is piping the ffmpeg output to vlc to create a stream. h; ffprobe. input('audio. Should not be used with live input streams (where it can cause packet loss). Here's the http protocol that exposes the relevant AVOptions. Here is my code var filePath = null; filePath = "video. mp4, how can I use ffmpeg to stream it in a loop to some rtp://xxx:port? I was able to do something similar for procedurally generated audio based on the ffmpeg streaming guides, but I was unable to find a video example: ffmpeg -re -f lavfi -i aevalsrc="sin(400*2*PI*t)" -ar 44100 -f mulaw -f rtp rtp://xxx:port ffmpeg -i {input file} -f rawvideo -bsf h264_mp4toannexb -vcodec copy out. Seems like ffmpeg does not play well with dual streams (MP4 video frames and AAC audio, at least), and every time I tried using this, it deadlocks or doesn't use a stream. 0. jpg -sameq -s 1440x1080 video. As soon as I start FFMpeg/FFplay, the MPEG TS packets start coming in, but still FFMpeg won't open the stream: 1067 1. internally to my application) and can push it to a local address, e. In the lavf API this process is represented by the avformat_open_input() function for opening a file, av_read_frame() for reading a single packet and finally avformat_close_input(), . Then ffmpeg can get this content using ffmpeg -f dshow -i video="Unreal Video Mixer Source". The commands in the diagram above will select the video from input0. mp4 here ffmpeg will use its "default stream type" or codec to an MP4 output. examples; Example of creating temp files with nodeJS node-tmp; related questions: 1. See the Advance options chapter of FFmpeg documentation and wiki for -map. int InputStream::decoding_needed: Definition at line 219 of file ffmpeg. I assume that the input is already in H. It currently includes 6 different types of output streaming which are mjpeg, jpeg via socket. %d is a placeholder that will be replaced by a number, starting from 0. Hoping someone can guide me to the right place. zoom – Set the zoom expression. Output: - Facebook (example) - Youtube (example) At the beginning, i thought that maybe could be better create two different ffmpeg processes to stream independently to each output. I successfully manage up connection and streaming h264 raw data but that image quality is too bad (half With rtmp and ffmpeg, I can reliably encode a single stream into an HLS playlist that plays seamlessly on iOS, my target delivery platform. I'm a bit confused on how did you manage to save both streams into a single file (your last code snippet). Afterwards combine the temporary files fluent-ffmpeg. Also, I need to pipe the output. mp4 I want to use ffmpeg to read a video that gets streamed into a Java InputStream of some kind, without having to write it to a file, and then use ffmpeg to finalize the processing of a file, hopefully via its standard input. The input rate needs to be set for record if used directly with unifi protect. Viewed 7k times 1 I have two files. I'm looking for a way to record a video UDP stream using ffmpeg but in 10mn chunks. Referenced by add_input_streams(), init_input_filter(), new_output_stream(), open_output_file(), and process_input(). jpg, img000001. -segment_time 5: duration of each segment. Using the command: ffmpeg -y -f vfwcap -i list I see that (as expected) FFmpeg finds the input stream as stream #0. I'm able to successfully stream an mp4 audio file stored on a Node. 10. dts of the first packet read for this stream (in AV_TIME_BASE units) Definition at line 321 of file ffmpeg. As input I have images named 001. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company ffmpeg -loglevel fatal -fflags +igndts -re -i "$1" -acodec copy -vcodec copy -tune zerolatency -f mpegts pipe:1 $1 is an mpegts http stream url. Thank you. mp4 and the 3rd audio stream from input1. -ac sets how many channels the input has and -channel_layout sets how to interpret their layout. The stream index starts counting from 0, so audio stream The itsoffset option applies to all streams embedded within the input file. Modified 6 years ago. One with a single video stream and another with one audio stream and one subtitle stream. mp4"; var stat = fs. Perhaps in three steps. You can get a Referenced by close_input_file(), open_input_file(), process_frame(), read_interval_packets(), and show_stream(). io stream object into ffmpeg using c#. Viewed 8k times 1 . Current launch command: ffmpeg -f dshow -i video="screen-capture-recorder" -vcodec libx264 -preset:v ultrafast -filter:v "crop=480:270:0:0" -vf tpad=start_duration=30 -r 30 -g 60 -keyint_min 60 -sc_threshold 0 -b:v 1G -maxrate 2500k -bufsize 1G -rtbufsize 1G -sws_flags lanczos+accurate_rnd -acodec aac -b:a Definition at line 243 of file ffmpeg. The commands do the same thing, I’m reading the FFmpeg documentation from top to bottom and I’ve reached stream selection and stream specifiers and while the inference logic (i. stream -f flv rtmp://server2:port/output. Here's my command line: ffmpeg -i rtsp://192. 4. 0 there is built-in support for them. 1 to input 2), then 10. 1:5000 ? I also need to know how to send the multicast through the same interface like ffmpeg eth1 udp://236. One of the most common use-cases for FFmpeg is live streaming. # stream copy ffmpeg -re -i input. ffmpeg transcoding one input video stream and multiple output video streams in the same file. From man ffmpeg-protocols: FFmpeg can't stream AAC files from stdin? 1. 92 -> 239. 1. 264 at this point, or rtp. Referenced by add_input_streams(), check_keyboard_interaction() It's possible switching between 2 inputs on the fly, but the input streams must be "alive" all the time. pressing q will quit ffmpeg and save the file. If your input video already contains audio, and you want to replace it, you need to tell ffmpeg which audio stream to take: ffmpeg -i video. Top. ffmpeg can process it but it really doesn't want to Let's The ideal scenario is to use ffmpeg. 2 ffmpeg - switch rtmp streams into a single encoded output? 2 FFMPEG: How to chose a stream from all stream. h Add avformat_open_input and avformat_write_header(). g. Then receive the stream using VLC or ffmpeg from that port (since rtp uses UDP, the receiver can start up any time). io stream object which is raw pcm data, if i want to convert it using ffmpeg what command shall I use. int InputFile::input_sync_ref: Definition at line 475 of file ffmpeg. mp4 I can successfully save the input stream into the file. I don't know why this does work, so what I was missing in my original code, though:. input stream to http streaming server (original audio) ffmpeg -stdin -f s16le -ar 48k -ac 2 -i pipe:0 -acodec pcm_u8 -ar 48000 -f aiff pipe:1 ffmpeg camera stream to rtmp Input streams are handled by piping them to ffmpeg process standard input. For example, when using a reolink cam with the rtsp restream as a source for record the preset-http-reolink will cause a Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Video Stream. I'm not particularly wedded to h. The documentation for this struct was generated from the following files: ffmpeg. Here's a basic example of how to stream a video ffmpeg has a special pipe flag that instructs the program to consume stdin. mp4 -c copy -f mpegts srt://192. 2. Examples below use x11grab for Linux. When used as an output option (before an output url), stop writing the output after its duration reaches duration. 5:1234 # re-encode ffmpeg -re -i input. Using the -map option disables the default stream selection behavior and allows you to manually choose streams. How can I make a Transcoded Video Filestream using C# and . You can influence the quality of the output file using various options. Referenced by add_input_streams(), check_keyboard_interaction() This parameters allows ffmpeg to process specific streams and can be provided multiple times. jpg, etc. mp4 Not sure but here we explicitly set a codec for the subtitle it may be what you call "Forced". If you want to use ffmpeg with some stream input files, you must use Pipes, but if file cannot converting into pipes (e. 3 How to transcode a stream of data using FFMpeg (C#) Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a link to this question ffmpeg transcoding one input video stream and multiple output video streams in the same file. The accepted options are: read_ahead_limit. Viewed 1k times 0 Is there a way to change ffmpeg input while streaming to rtmp? I have this bash script #! /bin/bash VBR Detailed Description. m3u8 The -fflags +genpts will regenerate the pts timestamps so it loops smoothly, otherwise the time sequence will be incorrect as it loops. 0 / 53. io, progressive mp4, native hls, hls. Improve this question I have the camera-like device that produces video stream and passes it into my Windows-based machine via USB port. I want to do this with the ProcessBuilder or Process objects. Stream behavior. dts. Normally they correspond to the video and audio stream. You can tell how much ffmpeg reads by using an io. See FFmpeg Wiki: Capture Desktop for additional examples. The overrun would happen when the code that generates the output doesn't keep up with the rate at which it's being written to the buffer, right? It is important to be mindful of input args when using restream because you can have a mix of protocols. I would like to programmatically start & stop the recording using a PHP or Bash shell script. One of the windows from the software is the one used as Input in the ffmpeg command line. Using the command: ffmpeg -y -f vfwcap -r 25 -i 0 c:\out. The demuxer layer (elementary stream in your case) will ask the input layer for data. Default is 0. Demuxers read a media file and split it into chunks of data (packets). input('video. Video input types supported are rtsp, mp4, mjpeg, and hls. Is there some command like ffmpeg eth1 -i udp://236. I already looked into sponge from moreutils and the linux buffer command to build some kind of a pipe . nb_streams: Definition at line 488 of file ffmpeg. If you want the output video frame size to be the same as the input: Not natively. -program title=ProgOne:st=0:st=1 -program ProgTwo:st=2:st=3 Tell FFmpeg to generate two programs in the output MPTS. FFmpeg for Live Streaming. Default is 65536. mp4 Or try: ffmpeg -i rtp://localhost:1234 -vcodec copy output. Thank you @xanatos The most efficient method is to use negative mapping in the -map option to exclude specific stream(s) ("tracks") while keeping all other streams. Frequently the number and quality of the available streams varies. statSync(filePath); var range = ffmpeg handles RTMP streaming as input or output, and it's working well. jpg, 002. js server using fluent-ffmpeg by passing the location of the file as a string and transcoding it to mp3. - I've figured it out. 1:5000?pkt_size=188. By default ffmpeg attempts to Definition at line 263 of file ffmpeg. This command will reduce noticeable the delay and will not You need to consider how the arguments in ffmpeg work. Amount in bytes that may be read ahead when seeking isn’t supported. 1:5000 eth1 -f mpegts udp://239. URL Syntax is ffmpeg -i subtitles. So another client can't play the current Stream, because he won't get the Stream from the beginning. Unsupported codec with id 100359 for input stream 8 Locked post. SDP example: v=0 c=IN IP4 127. int64_t InputStream::dts: dts of the last packet read for this stream (in AV_TIME_BASE units) Definition at line 366 of Node : Stream Number -> Stream FFmpeg's filter graph API seems to have two filters for doing that: streamselect (for video) and astreamselect (for audio). Also, since the format cannot be determined from the file name anymore, make sure you use the -f An fread() call comes much earlier in the pipeline -- from the input stage, assuming that the input comes from a file (vs. The only article that I've found, is either going over multiple hoops to setup a stream. include if present). So I would assume this is a matter of ffmpeg and how it processes the inputs. 264 video stream with the ffmpeg library (i. Caching wrapper for input stream. Here is a log while running in I need to take an input stream's audio and another stream's video and combine them with fluent-ffmpeg. or ffmpeg -i INPUT -f mpegts udp://host:port That will start an FFMPEG session and begin saving the live stream to my test. Common stream formats such as plain TS, HLS and DASH (without DRM) are supported as well as many others. Piping ffmpeg output into ffplay stdin with boost. Referenced by add_input_streams(), check_keyboard_interaction() Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company How to input system. Modified 4 years, 6 months ago. ts files, curl can be used to download these files on your drive. For example, you can change the bitrate of the video using the -b option: When used as an input option (before -i), limit the duration of data read from the input file. The syntax is: input_file_index refers to an input and by Use ffmpeg to stream a video file (looping forever) to the server: $ ffmpeg -re -stream_loop -1 -i test. start_time_effective. Ask Question Asked 11 years, 9 months ago. js, and mse via socket. png -r 10 -vcodec mpeg4 -f mpegts udp://127. I’d therefore like to get a report of what streams are contained within an input file. Golang and ffmpeg realtime streaming input/output. io. jpg' or -i img%06d. So in the first 1st of a second of streaming However, the documentation states that in the presence of 2 or more input streams of the same type, ffmpeg chooses "the better" one and uses it to encode the output. Best. when reading from a file). Deprecate av_open_input_stream, av_open_input_file, AVFormatParameters and av_write_header As you see ffmpeg finf 4 channel in UDP stream, But VLC play only channel 1(IRIB-TV1). which stream to operate upon) is impressive I think I’d like to be more explicit when I form commands. Is this possible to do, and if so, how? If it's not possible with these objects, would it be possible I've been using ffmpeg quite a lot in the past few weeks, and recently I've encountered a very annoying issue - when I use ffmpeg with an input stream (usually, just a url as the input) and try to set a start time (with -ss option), I always get a warn message that says "could not seek to position: XXX". video, 'output-video. Passing udp unix socket as input to ffmpeg. 898576050 192. run() ) ffmpeg -i INPUT -f pulse -device playback-device # At least one output file must be specified This tells you that you are missing the argument which you had in your working example (ffmpeg -i INPUT -f pulse "stream name"). Its extensive support for streaming protocols makes it compatible with all popular streaming services. Ask Question Asked 7 years ago. Default is 1. 5 seconds %d. stream Once you I have a raw H. Hot Network Questions Definition at line 365 of file ffmpeg. mkv to output. So any video The streams will be indexed from zero. The -map option can also be used to exclude specific streams with negative mapping. ffmpeg with multiple live-stream inputs adds async delay after filter. LimitReader might help. FFMPEG: Need to mix dow multiple audio stream to single stereo. I launch the ffserver and it works. And for the most part, they seem to do what I want: You can use a similar filter for audio streams: [in0][in1]astreamselect=inputs=2:map=0[out] Your process method is already good, just needs adjustments: Set StartupInfo. Referenced by add_input_streams(), check_keyboard_interaction() How to input system. I am trying to transcode a single video file with 1 video stream and several audio streams to the file having same video stream in different bitrates/sizes I am trying to stream a video file with fluent-ffmpeg. And it's a bit different of: ffmpeg -i input. 1:2000 However, when replacing udp with tcp (see here), ffmpeg says "connection refused". fvfhad uumvyk wye bwocx qdsuw dhfke hlwuvhbr eypziy xpnlx iugdcb