No Luck Muxing a MP4 with a MP3, all software fails, each plays in VLC

[TBoneit]

As the title says I have tried the Mux programs here that I found and they all seem to fail.

Any Suggestions that would work quickly without my needing to re-encode them ?

Thanks in advance for any help
Roger

[smrpix]

The .mp4 container doesn't normally allow for .mp3 audio. Either mux it as .mkv or .avi -- or just bite the bullet and convert your audio to AAC. It's very quick.

[El Heggunte]

Both Mp4Box and L-Smash's muxer allow you to wrap MP3 audio in the MP4 container.
FFmpeg also complies with the MP4 format specifications.
If any of these programs fails with an MP3 stream, probably it's because that stream is broken or malformed...

[smrpix]

Both Mp4Box and L-Smash's muxer allow you to wrap MP3 audio in the MP4 container.
FFmpeg also complies with the MP4 format specifications.
If any of these programs fails with an MP3 stream, probably it's because that stream is broken or malformed...

It CAN be done (obviously) but it is not as universally accepted as AAC. Players may reject it even with a good .mp3 stream.

[El Heggunte]

Both Mp4Box and L-Smash's muxer allow you to wrap MP3 audio in the MP4 container.
FFmpeg also complies with the MP4 format specifications.
If any of these programs fails with an MP3 stream, probably it's because that stream is broken or malformed...

It CAN be done (obviously) but it is not as universally accepted as AAC. Players may reject it even with a good .mp3 stream.

Then you should have said exactly that, instead of saying:

The .mp4 container doesn't normally allow for .mp3 audio.

Because it has always accepted MPEG-1 audio (read: MP1, MP2 and MP3).

P.S.: please stop trying to "prove" that I am "always wrong", because you will always fail at that.

[smrpix]

P.S.: please stop trying to "prove" that I am "always wrong".

With all respect -- THIS is the only thing I think you're wrong about.

[TBoneit]

Thanks a lot, I am currently trying Audacity to convert the audio to be more compatible.
Roger

[LigH.de]

@TBoneit - I would recommend first to show us a MediaInfo analysis of both streams, instead of converting (with quality loss) right away. It is indeed possible that you e.g. only believe to have MP3 audio, but it is instead a different format, and VLC only plays it because it doesn't rely on the filename extension only, but checks for more details to identify it. Similar guess for the video stream.

And I agree with El Heggunte: The MP4 container will of course support MPEG Audio streams, from MPEG 1 Audio (at least Layer 2 and 3) to MPEG 2/4 AAC variants. Whether a specific player supports any combination is not the fault of the MP4 specifications, but the implementation in that player's firmware. The MP4 container even supports a few non-MPEG audio formats (PCM, AC3).

[Cornucopia]

+1

Scott

[TBoneit]

Here is what I see in Mediainfo
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Main@L3.1
Format settings : CABAC / 3 Ref Frames
Format settings, CABAC : Yes
Format settings, Reference frames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 8 min 48 s
Bit rate : 334 kb/s
Width : 1 280 pixels
Height : 720 pixels
Display aspect ratio : 16:9
Frame rate mode : Constant
Frame rate : 25.000 FPS
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.014
Stream size : 21.0 MiB (99%)

Audio
ID : 1
Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2
Duration : 3 min 33 s
Bit rate : 126 kb/s
Channel(s) : 2 channels
Channel layout : L R
Sampling rate : 44.1 kHz
Frame rate : 43.066 FPS (1024 SPF)
Compression mode : Lossy
Stream size : 3.20 MiB (99%)

I hope this can pin down why

Many Thanks
Roger

[LigH.de]

Not really. I was curious about the analyses of the separate source files, not of the multiplexed result. This one contains AAC audio, not MP3 audio.

[TBoneit]

Hello
Those are the results of the Two separate source files. One is audio only and one is Video only. Why they do not want to mux in mp4box is beyond me. I have used it in the past and it worked.
FWIW the Video file extension is mp4 and the audio file shows as mp3, Could that be the problem ?

Thank You
Roger

[sneaker]

Format : AAC LC
Format/Info : Advanced Audio Codec Low Complexity
Codec ID : mp4a-40-2

That's not mp3 (MPEG-1 Audio Layer III) but its successor AAC (Advanced Audio Coding).
Like others said AAC in MP4 (specifically stereo LC-AAC) has very good compatibility so that's good news.

If you fail using mp4box try ffmpeg as already suggested:

ffmpeg -i "videofile" -i "audiofile" -map 0:v:0 -map 1:a:0 -c copy "output.mp4"

If ffmpeg fails show the complete ffmpeg log.

Those are the results of the Two separate source files. One is audio only and one is Video only. Why they do not want to mux in mp4box is beyond me.

Never shorten MediaInfo logs to just the track info. Container info is equally important. As are logs of e.g. mp4box/ffmpeg if something unexpected happens.