FAAC hangs during processing arbitrarily long files (seems fixed in 1.25)

[Matt Mossholder]

Binary package hint: faac

I have been processing long .wav and raw PCM files lately (on the order of an hour or two). On many of these files, faac will end up sitting and spinning, after processing an arbitrary portion of the file.

I have done the following to troubleshoot:

1) FAAC.EXE 1.24.1 under Windows XP - no problem.
2) faac 1.25 (compiled from source) on feisty - no problem with MPEG-2 AAC, unable to get MPEG-4 support compiled due to the existing known issues and my own lack of intelligence ;)
3) Ubuntu supplied faac 1.24 on edgy -faac hangs (i.e. file stops growing, elapsed time stops counting.)
4) Ubuntu supplied faac 1.24 on feisty - faac hangs (i.e. file stops growing, elapsed time stops counting.)

Items of note:
    * Tests 1, 3 and 4 were each on their own machines.
    * A given file will always hang on the same frame.
    * Files with more channels hang at a lower frame count.
    * When faac hangs, a ^C will not kill it. using ^Z will get back to the shell, however, where it can be killed with a -9.
    * Hangs occur with both MPEG2 AAC and MPEG4 AAC.

[waldheinz (waldheinz)]

I can confirm this, exactly the same problem.

[mattaw (mas-ecs)]

I concur with exactly the same problem. Attaching a copyrighted .flac file which demonstrates the problem on my AMD64 box.

AMD64, fiesty, faac 1.24.

Hangs at 100% CPU, ignores ^C, dies on kill -9.

Matt

[Ryan Rector (rmrector)]

Same problem here. Happens on random files, always at the same place. Run a .wav through normalize-audio and the problem still persists. Change the quality option (or remove and let it default to 100) of faac and it doesn't hang.
Running Gutsy beta, fully updated.

[Marvin Hankley (marvin-hankley)]

Can confirm this still occurs in Hardy.

[Koen (koen-beek)]

on 7/1/08 1.26 was released on hardy, does this bug still happen with that version ?

[Marvin Hankley (marvin-hankley)]

This appears to be fixed in Hardy with the updated version. Many thanks.

[Hair_of_the_Dog (hair-of-the-dog)]

I'm still seeing this issue in Hardy with version 1.26 of faac.
It seems to be associated with up sampling. If I try to up sample from 8000 Hz to 44100 Hz I get the hanging behavior, but if I up sample from 8000 Hz to 22050 Hz I don't get the hanging behavior.