[FFmpeg-trac] #2686(avcodec:open): Native AAC encoder collapses at high bitrates on some samples
FFmpeg
trac at avcodec.org
Wed Dec 3 19:46:00 CET 2014
#2686: Native AAC encoder collapses at high bitrates on some samples
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Reporter: Kamedo2 | Owner:
Type: defect | klaussfreire
Priority: normal | Status: open
Version: git-master | Component: avcodec
Keywords: aac | Resolution:
regression | Blocked By:
Blocking: | Reproduced by developer: 1
Analyzed by developer: 0 |
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Comment (by klaussfreire):
Actually, the instability happens transient high bit demand (ie: when a
transient signal induces the bit allocator into allocating bits from the
reservoir). That results in lower quality of following windows, and
twoloop fails to avoid holes in those situations, creating holes that
shouldn't be there, hence the instability.
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Ticket URL: <https://trac.ffmpeg.org/ticket/2686#comment:342>
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