Opened 9 years ago

Closed 9 years ago

#4208 closed defect (invalid)

aac encoder fails for 8kHz and the default bitrate

Reported by: Bill Butler Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords: aac
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug:
Examples of ways to reproduce:
1) ffmpeg -report -i 95d9Mini.avi -strict -2 95d9Mini.mov
2) ffmpeg -report -i 95d9.avi -vf scale=120:-1 -q:v 0 -strict -2 95d9Mini.mov

Note that for (1) above, 95d9Mini.avi is produced by the successful execution of:

ffmpeg -i 95d9.avi -vf scale=120:-1 -q:v 0 95d9Mini.avi

I attach report files for each example above.

Attachments (2)

ffmpeg-20141225-143751.log (6.6 KB ) - added by Bill Butler 9 years ago.
Report file for reproduction method (1).
ffmpeg-20141225-143618.log (7.5 KB ) - added by Bill Butler 9 years ago.
Report file for reproduction method (2).

Download all attachments as: .zip

Change History (3)

by Bill Butler, 9 years ago

Attachment: ffmpeg-20141225-143751.log added

Report file for reproduction method (1).

by Bill Butler, 9 years ago

Attachment: ffmpeg-20141225-143618.log added

Report file for reproduction method (2).

comment:1 by Carl Eugen Hoyos, 9 years ago

Keywords: aac added
Resolution: invalid
Status: newclosed
Summary: when converting to .mov "Too many bits per frame requested"aac encoder fails for 8kHz and the default bitrate

The aac encoder is currently marked as experimental which means that you cannot expect every bitrate to work with every samplerate (especially not a low one) nor that the default bitrate makes sense. Improvements for the aac encoder are currently discussed - see ticket #2686 - and will hopefully be committed soon. If the bug is still reproducible after these improvements, it will be possible to fix it but as long as the encoder is marked as experimental, this is not a valid ticket (the discussed improvements will not get easier by committing work-arounds for the current code).

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