Partially fragmented FMP4 file does not play correctly

[Abu-Abdullah]

Hi,

the following file is working with native MediaPlayer but not Exoplayer: http://maknoon.com/001.m4a

[christosts]

Assigning to @andrewlewis who is more experienced with media formats:

@andrewlewis this what I see:

• The first sample (buffer) that reaches the MediaCodecAudioRenderer is marked end-of-stream
• Looks like this is caused because the first call to FragmentedMp4Extractor.read() returns RESULT_END_OF_INPUT

[ojw28]

@kim-vde - I think this will probably be fixed as part of [Internal ref: b/130115709].

The problem is that we think the file is FMP4 because it has an mvex atom in the moov box, but it actually declares all of the samples in the moov atom as well, and does not contain any moof atoms. It's therefore an extreme example of a "partially fragmented" MP4 files, where it claims to be fragmented but is in fact not fragmented at all.

[kim-vde]

@ojw28 Ok. I'll try to fix this when working on [Internal ref: b/130115709]. Thanks for investigating.

@Abu-Abdullah We plan to fix the bug mentioned by Olly in the following months. Thanks for reporting your issue.