[FFmpeg-devel] [PATCH] lavc/libx264: enable x4->params.analyse.b_fast_pskip if mb_info is set

[Stefano Sabatini]

On date Tuesday 2023-09-05 12:43:35 +0000, ffmpeg-devel Mailing List wrote:
[...]
> On date Saturday 2023-09-02 09:20:08 +0000, Carotti, Elias wrote:
> > On Thu, 2023-08-31 at 19:09 +0200, Stefano Sabatini wrote:
> > >
> > <snip>
> > >
> > > > In particular why are you turning on fast_pskip silently based on 
> > > > a completely different setting?
> > >
> > > The patch is fixing the regression introduced by the unconditional 
> > > setting of b_fast_pskip.
> > >
> > > Now the question is if it makes sense to set mb_info without 
> > > b_fast_pskip (in both case this should be probably documented).
> > >
> > > @Elias can you comment about the mb_info/b_fast_pskip use case?
> >
> > Sorry again for the delay in responding.
> > We can safely remove it altogether. It's true we don't need to set it 
> > along with mb_info.
> > However, it doesn't do any harm, since fast_pskip is by default set to 
> > true by libx264 and only turned off either explicitly by the user, or 
> > when using the placebo preset, or when doing lossless encoding 
> > (constant QP == 0.) So, I agree, let's remove these three lines.
> >
> > Thanks, updated.
> 
> Ok for me

Applied, thanks.