[FFmpeg-trac] #2686(avcodec:open): Native AAC encoder collapses at high bitrates on some samples
FFmpeg
trac at avcodec.org
Sun Jun 30 23:30:29 CEST 2013
#2686: Native AAC encoder collapses at high bitrates on some samples
-------------------------------------+-------------------------------------
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 |
-------------------------------------+-------------------------------------
Comment (by klaussfreire):
In aacenc.c, changing
{{{
s->lambda *= ratio
}}}
by
{{{
s->lambda *= sqrtf(sqrtf(ratio));
}}}
Fixes the white nose thing, so indeed it's RC messup.
But that brings some other trouble in more normal signals, so I guess I'll
have to play with RC a little bit more.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:17>
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