How can I add a new audio track to an x265 MP4 video without re-encoding it?

Question

I would've tried MKVMerge or MakeMKV but they won't work on MP4 files. Does anyone have a way to just add the track? Cause adding it via Handbrake or something would take too much time.

Thanks.

Gyan · Answer 1 · 2017-01-10T06:25:40.670

2

You can use ffmpeg, a free command-line tool.

Syntax would be

ffmpeg -i video.mp4 -i audio.mp3 -c copy -map 0 -map -0:d -map 1 new.mp4

edited Jan 10 '17 at 06:25

answered Jan 08 '17 at 16:27

Gyan

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"[mp4 @ 00000000024c2040] Could not find tag for codec bin_data in stream #2, codec not currently supported in container Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument" Are you sure this works on x265 files? Or am I doing something wrong here? – user683334 Jan 10 '17 at 05:07
Share the full console output. – Gyan Jan 10 '17 at 06:03
http://pastebin.com/1Q4WG4YK – user683334 Jan 10 '17 at 06:20
Are there subtitles in the original file? – Gyan Jan 10 '17 at 06:22
Yes it's a useless subtitle file muxed in there. I don't need it – user683334 Jan 10 '17 at 06:24
See edited cmd. – Gyan Jan 10 '17 at 06:25
It worked, thank you. That didn't take any time and the new file works perfectly. – user683334 Jan 10 '17 at 06:29

How can I add a new audio track to an x265 MP4 video without re-encoding it?

1 Answers1