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MEncoder - LinuxTVWiki
https://www.linuxtv.org/wiki/index.php/MEncoder#:~:text=%24%20mencoder%20-ovc%20copy%20-oac%20copy%20-o%20stream.ts,stream%20dump%20into%20something%20more%20useful%2C%20like%20XviD.
MEncoder - ArchWiki
https://wiki.archlinux.org/title/MEncoder
to encode multi-audio file to mp4 we need to use the "-aid <audio stream number>" like -map 0:1 in ffmpeg) 1. To extract video+audio stream1 (usually english) of mkv file: mencoder -oac copy -ovc copy -aid 0 sample.mkv -o sample.mp4 2. To extract video+audio stream2 (usually non-english, like Hindi, French, etc.) of mkv file: mencoder -oac copy -ovc copy -aid 1 sample.mkv -o …
6.7. Stream copying
http://www.mplayerhq.hu/DOCS/HTML/en/menc-feat-streamcopy.html
Rationally: video stream copying can be useful for example when only the audio stream has to be encoded (like, uncompressed PCM to MP3). Audio stream (option -oac copy): straightforward. It is possible to take an external audio file (MP3, WAV) and mux it into the output stream. Use the -audiofile filename option for this.
Merging videos with mencoder - Actual Admins
https://www.actualadmins.com/merging-videos-with-mencoder/
Mencoder supports an option called Stream Copying, using which you can concatenate video and audio streams. Note: All input video files need to have the same dimensions, frame rate and codec type! This is a limitation imposed by mencoder (and quite reasonable too, because we copy all content. Otherwise, you’d need to convert some or all …
MEncoder - LinuxTVWiki
https://www.linuxtv.org/wiki/index.php/MEncoder
$ mencoder -ovc copy -oac copy -o stream.ts dvb://"STREAM NAME" This will copy the video (-ovc) and audio (-oac) streams to the file stream.ts. Transcoding the file to XviD. An MPEG-TS dump of a DVB stream is extremely large (~1GB for 30 minutes). MEncoder will also allow you to transcode the stream dump into something more useful, like XviD.
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