How to extract audio from MP4 (H.264/AAC) & MKV (VP9/Opus) without re-encoding? (100% lossless please)
ffmpeg -hide_banner -i input.mp4 -timestamp now -vn -c:a copy output.m4a
ffmpeg -hide_banner -i input.mkv -timestamp now -vn -c:a copy output.opus
Any pro FFmpeg GUI suggestion for Win x64?
Losslesscut
Losslesscut
Can I losslessly extract audio from video with that app (100% lossless demuxing)?
Losslesscut
Can I losslessly extract audio from video with that app (100% lossless demuxing)?
Yes. Hence it's name ;-)
LosslessCut (https://github.com/mifi/lossless-cut) really is a great tool.
Losslesscut
Can I losslessly extract audio from video with that app (100% lossless demuxing)?
Yes. Hence it's name ;-)
LosslessCut (https://github.com/mifi/lossless-cut) really is a great tool.
Shows errors after remuxing.
what do the errors say?
also, if you click the
? then at the very end of the page it says:
LAST FFMPEG COMMANDS
The last executed ffmpeg commands will show up here after you run operations. You can copy them to clipboard and modify them to your needs before running on your command line.
This command might be useful in establishing whether or not it's an ffmeg issue, a losslesscut issue or the media file you're providing it with.
Also, if you read about the program all it does is provide a GUI/frontend for ffmpeg.
what do the errors say?
also, if you click the ? then at the very end of the page it says:
LAST FFMPEG COMMANDS
The last executed ffmpeg commands will show up here after you run operations. You can copy them to clipboard and modify them to your needs before running on your command line.
This command might be useful in establishing whether or not it's an ffmeg issue, a losslesscut issue or the media file you're providing it with.
Also, if you read about the program all it does is provide a GUI/frontend for ffmpeg.
Could you please write a tutorial: how to 100% losslessy remux?
Its been a while since I've had the need to extract from a container, but I think MKV Extract can do what you're wanting.
Its been a while since I've had the need to extract from a container, but I think MKV Extract can do what you're wanting.
Does it support MP4?
MP4: Load file into losslesscut > click Tracks > click on the tracks to disable them leaving only the audio track you want > Export > Select ipod - M4A - Audio for iTunes > Export
MKV: Load file into losslesscut > click Tracks > click on the tracks to disable them leaving only the audio track you want > Export > Select opus - Ogg Vorbis > Export
MP4: Load file into losslesscut > click Tracks > click on the tracks to disable them leaving only the audio track you want > Export > Select ipod - M4A - Audio for iTunes > Export
MKV: Load file into losslesscut > click Tracks > click on the tracks to disable them leaving only the audio track you want > Export > Select opus - Ogg Vorbis > Export
Thank you so much.