[FFmpeg-trac] #2686(avcodec:open): Native AAC encoder collapses at high bitrates on some samples
FFmpeg
trac at avcodec.org
Sat Jul 13 06:05:26 CEST 2013
#2686: Native AAC encoder collapses at high bitrates on some samples
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Reporter: Kamedo2 | Owner:
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: aac | Blocked By:
regression | Reproduced by developer: 1
Blocking: |
Analyzed by developer: 0 |
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Comment (by Kamedo2):
Isn't the lower spreading function applied too much? The quality of lower
frequency is bad when the higher frequency bin is strong. And what makes
320kbps particularly bad? The quality degrades when we have enough
('overkill') bits. I think something fatal is happening, like integer
overflow or something.
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:30>
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