[FFmpeg-trac] #2686(avcodec:open): Native AAC encoder collapses at high bitrates on some samples
FFmpeg
trac at avcodec.org
Wed Jul 17 20:04:25 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 Kamedo2):
-cutoff 18000 seems to work, but the lowpass filter is too dull, compared
to many practical encoders. libavcodec/psymodel.c has the constant
FILT_ORDER, and changing the order from 4 to 8 sharpens the filter. But 12
and 16 fails somehow.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:36>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
More information about the FFmpeg-trac
mailing list