Majority of m4a files can't decode: "isomp4: missing moov atom"

[cybersoulK]

I made several sounds from audacity and from ffmpeg command line tool.
They play normally on mac and VLC playbacks, but i get this error with Symphonia: Unsupported("isomp4: missing moov atom")

Symphonia/symphonia-format-isomp4/src/demuxer.rs

Line 418 in 4f41954

Reading them with a parser reveals that moov is at the end (which is most common in m4a).
I had a couple of files m4a that worked (first file structure)

which indicates missing crucial functionality to parse m4a

[cybersoulK]

running qt-faststart sound.m4a sound2.m4a for all files solved the issue.
I am not sure if this is just a overlooked feature, or a crate choice.

[tGrothmannFluffy]

Hi there, I am getting the same error message with some m4a files.