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FFMPEG convert video with multiple audio streams?
https://video.stackexchange.com/questions/12051/ffmpeg-convert-video-with-multiple-audio-streams
-c:a -> select best supported audio (transcoded) -c:a copy -> best supported audio (copied) -map 0:a -> all audio from 1st input file (transcoded) -map 0:0 -> 1st stream from 1st input file (transcoded) -map 1:a:0 -> 1st audio stream from 2nd input file (transcoded) -map 1:a:1 -c:a copy -> 2nd audio stream from 2nd input file (copied)
StreamingGuide - FFmpeg
https://trac.ffmpeg.org/wiki/StreamingGuide
Streaming a simple RTP audio stream from FFmpeg. FFmpeg can stream a single stream using the RTP protocol. In order to avoid buffering problems on the other hand, the streaming should be done through the -re option, which means that the stream will be streamed in real-time (i.e. it slows it down to simulate a live streaming source.
ffmpeg Documentation
https://ffmpeg.org/ffmpeg.html
out1.mkv is a Matroska container file and accepts video, audio and subtitle streams, so ffmpeg will try to select one of each type. For video, it will select stream 0 from B.mp4, which has the highest resolution among all the input video streams. For audio, it will select stream 3 from B.mp4, since it has the greatest number of channels.
FFmpeg: rearrange audio streams in video files - BlogX
https://blogx.ch/blog/technology/ffmpeg-rearrange-audio-streams-in-video-files-950/
FFmpeg: rearrange audio streams in video files Harmonizing the order of audio streams in your video files can be done by using the free open source tool FFmpeg in the ‘Terminal’. In order to use FFmpeg in the ‘Terminal’ of an Apple macOS computer you have to …
DIY: Live Audio Streaming Using Icecast with FFmpeg
https://www.streamingmediaglobal.com/Articles/ReadArticle.aspx?ArticleID=125665
DIY: Live Audio Streaming Using Icecast with FFmpeg Audio Capture. The first challenge is to get the audio input from your mic source working and usable by FFmpeg. Note the... Encoding. Now we have captured our audio input, the next step is to compress the audio using our choice of codec. Packaging ...
linux - FFmpeg not copying all audio streams - Stack …
https://stackoverflow.com/questions/37820083/ffmpeg-not-copying-all-audio-streams
ffmpeg -i in.mp4 -map 0 -c copy out.mp4. in.mp4 contains 3 streams: Video. Audio track 1. Audio track 2. out.mp4 (which should be identical to in.mp4) contains only 2 streams: Video. Audio track 1. FFmpeg does appear to correctly identify all …
usb - Live audio stream using FFMPEG - Raspberry Pi …
https://raspberrypi.stackexchange.com/questions/1466/live-audio-stream-using-ffmpeg
I try to stream live audio using ffmpeg and external USB microphone. I followed this nearly tutorial. I had to adapt some steps but finally, I achieved to receive the stream my laptop using this command : ffmpeg -f oss -i /dev/dsp1 -acodec libmp3lame -ab 32k -ac 1 -re -f rtp rtp://192.168.28.116:1234
How to add multiple audio tracks to a single ... - Medium
https://medium.com/av-transcode/how-to-add-multiple-audio-tracks-to-a-single-video-using-ffmpeg-open-source-tool-27bff8cca30
FFmpeg is a free and open-source project consisting of powerful audio and video converter software suite of libraries and programs for handling video, audio, and other multimedia files and streams....
ffmpeg-fluent increase audio stream's volume by 4x ...
https://www.reddit.com/r/programming/comments/sdcu4p/ffmpegfluent_increase_audio_streams_volume_by_4x/
Marak, the guy behind the recent breaking of faker.js, colors.js, etc., claims that it was a "programming mistake" and wants Github to unban him.
1st video stream, 2nd audio stream, all subtitles
https://unix.stackexchange.com/questions/245937/re-encoding-video-with-ffmpeg-including-all-subtitles-but-not-all-audio
The stream selection default behavior only selects one stream per type of stream, so inputs with multiple audio streams will create an output with one audio stream. To disable this behavior and manually choose desired streams use the -map option. These examples use -c copy to stream copy (re-mux) from the input to to the output.
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