In general I'm having trouble with decoded/reincoded m4a iTunes files skipping in Quicktime player both on the MAC and PC.

All decoded with faad 'faad test.m4a' from a iTunes file encoded AAC at 160kbps.

faac with -w -q 100 -o test.m4a test.wav

faac with -w -q 100 --no-tns -o test.m4a test.wav

quicktime skips 3-4 times and then bombs out after 20 seconds or so. The player seems to stop playing music and then a couple of seconds of time go off and then it quits.

faac with -w -q 100 --no-midside -o test.m4a test.wav

Plays fine.

faac with -w -q 100 --no-tns -no-midside -o test.m4a test.wav

Plays fine.

here is the kicker.....

If I decode with Quicktime to WAV and not FAAD.

All of the above FAAC options work fine.

What I'm finding is that the same original M4A file has 14109 frames if decoded by quicktime and 14110 frames if decoded with FAAD. Is this of signifigance?


FAAD version April 9th 2004 builf FAAD2.
FAAC version April 13th 1.24 beta.

Thanks
Robert

Hot shot idea: faac and a few other encoders do things not recommened by mp4. Specifically (two, anyway) how it puts mdat up front, and moov at the end (only have to write to disk once for a "penny-wise, pound-foolish" result) and how it doesn't sequentially write the stream, but instead gaps the stream and relies on chunk offsets to skip over the gap for a "what were they thinking and what did they hope to gain" result.

Is there any way to prevent this?
Still having the smae problem.

Doen't anyone use Quicktime for playing their files.