Merging various audio with mp4?

[Mol]

So yeah how ya do it these days? I usually used m4box in old days ,but idk how to use it anymore. I kinda need it for 10bit mp4's and hevc 16bit stuff too. acc/mp3/flac doesn't have to be super simplistic method , but that would be nice ;3.

[mirkosp]

Just mux in mkv with mkvtoolnix and call it a day. You don't have hardware compatibility anyway with 10 bit video.

[Mol]

Damn. That's what i have been doing, but yeah mp4 would be handier ~ oh well.

[Qyot27]

A Mali T800-series GPU *might* support it, if I'm reading the spec sheet right (it touts '10-bit YUV support', but that might be just for the display itself, not the video decoder, or if it does include the video decoder, it may only be 10-bit HEVC that's decoded, not 10-bit H.264). And it won't care about the container either - MKV should be just as workable as MP4.

But nothing uses the 800-series yet - and when something does, it'll likely be one of the high-end smartphones or tablets released next year. Probably with at least a CPU using Cortex-A72 cores, HMP setup with the A53 or not.

[Qyot27]

That said, sticking to the original question, MP3 and AAC are fine to mux into MP4 files with either mp4box (just use an up-to-date build so it can mux HEVC) or L-SMASH (again, updated, but that may be easier to come by).

I didn't think MP4 supported FLAC streams, not unless they get shoved into a private area like Nero did/(does?) with storing Vorbis in MP4.

[mirkosp]

MP4 does not support FLAC. You'd have to go the ALAC route, but good luck with that...

[Mol]

Yeah, that's what i thought, just throw it in out of curiosity.
ps don't have mp4box atm but

Code: Select all

MP4Box -add audio.mp3 new_file.mp4

or

Code: Select all

MP4Box -add file.mp3#audio new_file.mp4

[Qyot27]

MP4 does not support FLAC. You'd have to go the ALAC route, but good luck with that...

I've never messed with it, but ffmpeg can encode and decode ALAC (although who knows about non-Apple devices). It can also decode MPEG-4 ALS, but can't encode it. And probably even fewer devices support ALS.

Speaking of,

Code: Select all

ffmpeg -i video.mp4 -i audio.flac -vcodec copy -acodec alac output.mp4