> From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf
> Of Mark Thompson
> Sent: Monday, December 10, 2018 3:10 AM
> To: ffmpeg-devel@ffmpeg.org
> Subject: Re: [FFmpeg-devel] [PATCH v4 8/9] lavc/qsvenc: enable QVBR mode
>
> On 29/11/2018 08:29, Zhong Li wr
On 29/11/2018 08:29, Zhong Li wrote:
> QVBR mode is to use the variable bitrate control algorithm
> with constant quality.
> mfxExtCodingOption3 should be supported to enable QVBR mode.
>
> Example usage: ffmpeg -hwaccel qsv -c:v h264_qsv -i input.mp4 -c:v
> h264_qsv -global_quality 25 -maxrate 2M
> From: Li, Zhong
> Sent: Thursday, November 29, 2018 4:29 PM
> To: ffmpeg-devel@ffmpeg.org
> Cc: Li, Zhong
> Subject: [PATCH v4 8/9] lavc/qsvenc: enable QVBR mode
>
> QVBR mode is to use the variable bitrate control algorithm with constant
> quality.
> mfxExtCodingOption3 should be supported to
QVBR mode is to use the variable bitrate control algorithm
with constant quality.
mfxExtCodingOption3 should be supported to enable QVBR mode.
Example usage: ffmpeg -hwaccel qsv -c:v h264_qsv -i input.mp4 -c:v
h264_qsv -global_quality 25 -maxrate 2M test_qvbr.mp4 -v verbose
Signed-off-by: Zhong L
