> -Original Message-
> From: ffmpeg-devel [mailto:ffmpeg-devel-boun...@ffmpeg.org] On Behalf
> Of Derek Buitenhuis
> Sent: Friday, December 28, 2018 12:42 AM
> To: ffmpeg-devel@ffmpeg.org
> Subject: Re: [FFmpeg-devel] [PATCH V3 1/3] avutil: add ROI data struct and
>
On 27/12/2018 11:05, Guo, Yejun wrote:
> enum AVActiveFormatDescription {
> @@ -200,6 +206,19 @@ typedef struct AVFrameSideData {
> AVBufferRef *buf;
> } AVFrameSideData;
>
> +typedef struct AVROI {
> +/* coordinates at frame pixel level.
> + * It will be extended internally if the
The encoders such as libx264 support different QPs offset for different MBs,
it makes possible for ROI-based encoding. It makes sense to add support
within ffmpeg to generate/accept ROI infos and pass into encoders.
Typical usage: After AVFrame is decoded, a ffmpeg filter or user's code
generates
