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avconv: remove audio stream, keep audio and video ...
https://unix.stackexchange.com/questions/202135/avconv-remove-audio-stream-keep-audio-and-video-synchronized
I would like to discard two of the audio streams, keeping only one. I tried to do so using avconv (v11.3-6): avconv -i in.avi -map 0:0 -map 0:2 -vcodec copy -acodec copy out.avi. The problem is that in the resulting file the remaining audio stream is no longer correctly synced to the video stream, though they are synced in the original.
Libav documentation : avconv
https://www.libav.org/avconv.html
-codec:a:1 ac3 option contains a:1 stream specifier, which matches the second audio stream. Therefore it would select the ac3 codec for the second audio stream. A stream specifier can match several stream, the option is then applied to all of them. E.g. the stream specifier in -b:a 128k matches all audio streams.
11 'Avconv' Commands to Record, Convert and Extract …
https://www.tecmint.com/avconv-command-examples/
Get Video and Audio File Information. If you want to get some information about any …
How drop an audio stream using avconv? - Ask Ubuntu
https://askubuntu.com/questions/260787/how-drop-an-audio-stream-using-avconv
The following example takes only the first stream from the first file (usually video) and audio from the second file. avconv -i input0.mkv -i input1.m4a -map 0:0 -c:v copy -map 1 -c:a copy output.mp4. Share. Improve this answer. Follow this answer to receive notifications. answered May 4 '15 at 1:25. LiveWireBT.
linux - Using avconv to stream live audio from in-line ...
https://stackoverflow.com/questions/14298400/using-avconv-to-stream-live-audio-from-in-line-alsa-hw0-0-over-wireless-acces
RTP send a stream to a specific host (unless you are using multicast). So rather than. avconv -f alsa -ac 1 -i hw:0,0 -acodec mp2 -b 64k -f rtp rtp://10.0.0.1:1234 On the device side, I would use: avconv -f alsa -ac 1 -i hw:0,0 -acodec mp2 -b 64k -f rtp rtp://{IP of your laptop}:1234 On your laptop: avplay -i rtp://127.0.0.1:1234
FFMPEG convert video with multiple audio streams?
https://video.stackexchange.com/questions/12051/ffmpeg-convert-video-with-multiple-audio-streams
When I pop the file into avimux, I can clearly see two audio tracks/sources. I have successfully converted the video without loss of quality with the following. ffmpeg -i "The Bunker.avi" -vcodec h264 TheBunkerMix.mp4. But, the resultant file only had one track/source. Basically I recorded game footage and the original file had both the in game ...
avconv • man page
https://helpmanual.io/man1/avconv/
"-codec:a:1 ac3" contains the "a:1" stream specifier, which matches the second audio stream. Therefore, it would select the ac3 codec for the second audio stream. A stream specifier can match several streams, so that the option is applied to all of them. E.g. the stream specifier in "-b:a 128k" matches all audio streams.
Ubuntu Manpage: avconv - avconv video converter
https://manpages.ubuntu.com/manpages/trusty/man1/avconv.1.html
For example, to map ALL streams from the first input file to output avconv -i INPUT -map 0 output For example, if you have two audio streams in the first input file, these streams are identified by "0:0" and "0:1". You can use "-map" to select which streams to place in an output file.
live - avconv screen recording to FLV, audio drifts out of ...
https://sound.stackexchange.com/questions/23882/avconv-screen-recording-to-flv-audio-drifts-out-of-sync
Locally, the audio and video are in perfect sync. The script I'm using to run avconv is: #!/bin/bash INRES="850x480" # input resolution OUTRES="850x480" SCREENPOS="+3160,200" #X, Y offset to grab on screen FPS="12" # target FPS BITRATE="-b 192k" STREAM_KEY="secret-stream-key" if [ "$1" = "live" ]; then # output to live stream and to local file FILE="/home/rena/video/live/live-`date …
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