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Extract audio aac from mp4 - Super User
https://superuser.com/questions/186465/extract-audio-aac-from-mp4
To demux/extract aac from mp4 (assuming audio is the 2nd track): mp4box -raw 2 video.mp4 This will automatically create output file "video_track2.aac" (Use mp4box -info video.mp4 to get a list of the tracks in the MP4 file.) If you wanted control over the output filename, you would do mp4box -raw 2 video.mp4 -out audio.aac
mp4box man page - gpac - General Commands | ManKier
https://www.mankier.com/1/mp4box
Examples (TL;DR) Display information about an existing MP4 file: mp4box -info filename. Add an SRT subtitle file into an MP4 file: mp4box -add input_subs.srt:lang=eng -add input.mp4 output.mp4. Combine audio from one file and video from another: mp4box -add input1.mp4#audio -add input2.mp4#video output.mp4. tldr.sh.
Demuxing audio tracks from .mp4 using mp4box - Stack …
https://stackoverflow.com/questions/34337545/demuxing-audio-tracks-from-mp4-using-mp4box
The audio tracks are encoded using the ALAC codec. I want to extract those using mp4box. What I've tryed so far for extracting a track is this: mp4box -single 1 "inputfile.mp4" -out "outputfile.m4a". What happens is, it works as that a outputfile.m4a is created, but something with the header/codec/file info seems to be malformated.
MP4Box.js | mp4box.js
https://gpac.github.io/mp4box.js/
MP4Box.js can be used in Node.js. See for example the info.js example. Contribute. If your favorite box is not parsed by MP4Box, you can easily contribute. Each box parsing code is stored in a separate file whose name is the 4CC of the box type. For instance, the parsing of the ctts box is located in ctts.js.
Extract - Yet Another MP4Box UI
http://yamb.unite-video.com/extract.html
example : a video encoding with the x264 vfw compressor. To put it correctly in a new container (mp4 or mkv), you must extract this stream The extracted streams will be still in a raw format. If your input file includes chapters, then you have the possibility If …
[SOLVED] Extract audio from mp4 - Page 2
https://ubuntuforums.org/showthread.php?t=1122611&page=2
Re: Extract audio from mp4 Don't know about sound converter, there is a very easy to use program called WINFF which is basically ffmpeg with a GUI. It works for me (or you can use ffmpeg on the terminal) I think it does batch conversion as well.
How to extract aac audio from an mp4 file to m4a - Ask …
https://askubuntu.com/questions/437798/how-to-extract-aac-audio-from-an-mp4-file-to-m4a
How can I extract the aac audio from an mp4 file? I tried with ffmpeg and -acodec copy but if i use mp4 as output it will still encode the video and I get the same file size. If I use m4a as output it will somehow still encode the video and I get almost the same filesize.
Plain English Guide to MP4Box and Repacking MKV-MP4, …
https://forum.videohelp.com/threads/357280-Plain-English-Guide-to-MP4Box-and-Repacking-MKV-MP4-MP4-MP4-(M4V)
MP4Box Command Structure (typical usage): MP4Box follows the typical rules for DOS commands, and Batch files can be written to make commonly used tasks available with the click of a mouse. 1. Typically the MP4Box instruction for each file …
How can I extract audio from video with ffmpeg? - Stack ...
https://stackoverflow.com/questions/9913032/how-can-i-extract-audio-from-video-with-ffmpeg
Extract a specific audio track / stream. Example to extract audio stream #4: ffmpeg -i input.mkv -map 0:a:3 -c copy output.m4a -map 0:a:3 selects audio stream #4 only (ffmpeg starts counting from 0).-c copy enables stream copy mode. This copies the audio and does not re-encode it. Remove -c copy if you want the audio to be re-encoded.
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