[FFmpeg-devel] [PATCH] avcodec/libvpxenc: add VP8 support for ROI-based encoding

Gyan ffmpeg at gyani.pro
Wed Feb 27 15:48:11 EET 2019

On 27-02-2019 07:07 PM, Derek Buitenhuis wrote:
> On 27/02/2019 10:22, Gyan wrote:
>> Looks like, at present, the only way to effect ROI is via side data, and
>> no filter or other in-tree mechanism at present can convey or generate it.
> Life exists outside of ffmpeg.c, and it's an extremely useful API to have.
>> Are there any near-term plans to add some? If not, may I suggest that
>> you add a private option for supporting encoders, for users to input ROIs?
> Please don't suggest removing an API that was *just added*, after many months
> of bikeshedding. Please.
Huh. I haven't suggested removing anything.

I suggested *adding* a way for this feature to be useful for ffmpeg 
users in the near-term. Who knows how long will it take for a decent 
per-frame ROI filter, like the facedetect example mentioned in the 
initial discussion.


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