[FFmpeg-devel] [PATCH 2/2] lavc/encode: fix frame_number double-counted

Michael Niedermayer michael at niedermayer.cc
Fri Jul 27 22:27:56 EEST 2018


On Thu, Jul 26, 2018 at 03:51:07PM +0800, Zhong Li wrote:
> Encoder frame_number may be double-counted if some frames are cached and then flushed.
> Take qsv encoder (some frames are cached firsty for asynchronism) as example,
> ./ffmpeg -loglevel verbose -hwaccel qsv -c:v h264_qsv -i in.mp4 -vframes 100 -c:v h264_qsv out.mp4
> frame_number passed to encoder is double-counted and larger than the accurate value.
> Libx264 encoding with B frames can also reproduce it.
> 
> Signed-off-by: Zhong Li <zhong.li at intel.com>
> ---
>  libavcodec/encode.c | 7 ++++---
>  1 file changed, 4 insertions(+), 3 deletions(-)

probably ok

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Into a blind darkness they enter who follow after the Ignorance,
they as if into a greater darkness enter who devote themselves
to the Knowledge alone. -- Isha Upanishad
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 181 bytes
Desc: not available
URL: <http://ffmpeg.org/pipermail/ffmpeg-devel/attachments/20180727/cd2846f5/attachment.sig>


More information about the ffmpeg-devel mailing list