#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 klaussfreire):
So, I tried a whole new approach, and it seems vastly superior.
I modified psy's "Rate control" to work differently for VBR. Instead of
using the bit reservoir, it just computes the optimum PE and scales it by
quality. And it works nicely. I still had to push scalers a bit more on
the allocator and do the LP filtering to reach the very low bit rates with
VBR, but it's sounding a lot better.
I'll do some more testing and then upload the updated patch.
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Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2686#comment:104>
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