Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Soft Works
> -Original Message- > From: ffmpeg-devel On Behalf Of > Soft Works > Sent: Sunday, 26 September 2021 01:00 > To: FFmpeg development discussions and patches de...@ffmpeg.org> > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > > > >

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Soft Works
> -Original Message- > From: ffmpeg-devel On Behalf Of > Michael Niedermayer > Sent: Saturday, 25 September 2021 22:47 > To: FFmpeg development discussions and patches de...@ffmpeg.org> > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > On Sat,

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Michael Niedermayer
t; Sent: Saturday, 25 September 2021 16:30 > > > To: FFmpeg development discussions and patches > > de...@ffmpeg.org> > > > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > > > > > On Sat, Sep 25, 2021 at 10:23:56

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Michael Niedermayer
t; > > > > > > > -Original Message- > > > > > From: ffmpeg-devel On Behalf > > Of > > > > > Soft Works > > > > > Sent: Friday, 24 September 2021 19:03 > > > > > To: FFmpeg development discussions and patch

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Soft Works
> -Original Message- > From: ffmpeg-devel On Behalf Of > Paul B Mahol > Sent: Saturday, 25 September 2021 17:51 > To: FFmpeg development discussions and patches de...@ffmpeg.org> > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > On Sat, S

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Paul B Mahol
; > > > > > > -Original Message- > > > > > From: ffmpeg-devel On Behalf > > Of > > > > > Soft Works > > > > > Sent: Friday, 24 September 2021 19:03 > > > > > To: FFmpeg development discussions and patches > &

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Soft Works
> -Original Message- > From: ffmpeg-devel On Behalf Of > Michael Niedermayer > Sent: Saturday, 25 September 2021 16:30 > To: FFmpeg development discussions and patches de...@ffmpeg.org> > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > On Sat,

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Michael Niedermayer
day, 24 September 2021 19:03 > > > To: FFmpeg development discussions and patches > > de...@ffmpeg.org> > > > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > > > > > > > > > > > > -Original Message- > > > &

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Hendrik Leppkes
> > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > > > > > > > > -Original Message- > > > From: ffmpeg-devel On Behalf Of > > Michael > > > Niedermayer > > > Sent: Friday, 24 September 2021 17:40 > >

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-25 Thread Paul B Mahol
t; > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > > > > > > > > -Original Message- > > > From: ffmpeg-devel On Behalf Of > > Michael > > > Niedermayer > > > Sent: Friday, 24 September 2021 17:40 > > &g

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-24 Thread Soft Works
> -Original Message- > From: ffmpeg-devel On Behalf Of > Soft Works > Sent: Friday, 24 September 2021 19:03 > To: FFmpeg development discussions and patches de...@ffmpeg.org> > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > > > >

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-24 Thread Soft Works
> -Original Message- > From: ffmpeg-devel On Behalf Of Michael > Niedermayer > Sent: Friday, 24 September 2021 17:40 > To: FFmpeg development discussions and patches > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > On Fri, Sep 24, 2021 at 10:3

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-24 Thread Soft Works
> -Original Message- > From: ffmpeg-devel On Behalf Of Tomas > Härdin > Sent: Friday, 24 September 2021 17:34 > To: FFmpeg development discussions and patches > Subject: Re: [FFmpeg-devel] Scaling PAL8 images with alpha > > fre 2021-09-24 klockan 10:30 +

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-24 Thread Michael Niedermayer
On Fri, Sep 24, 2021 at 10:30:31AM +, Soft Works wrote: > Hi, > > for a new filter, I want to rescale PAL8 subtitle bitmaps where the palette > includes > colors with alpha. > > From what I’ve seen, swscale doesn’t support PAL8-to-PAL8, only PAL8-to-BGR8 > which doesn’t support alpha and the

Re: [FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-24 Thread Tomas Härdin
fre 2021-09-24 klockan 10:30 + skrev Soft Works: > Hi, > > for a new filter, I want to rescale PAL8 subtitle bitmaps where the > palette includes > colors with alpha. Isn't this typically done at the player level? What's your use case? > > From what I’ve seen, swscale doesn’t support PAL8-t

[FFmpeg-devel] Scaling PAL8 images with alpha

2021-09-24 Thread Soft Works
Hi, for a new filter, I want to rescale PAL8 subtitle bitmaps where the palette includes colors with alpha. From what I’ve seen, swscale doesn’t support PAL8-to-PAL8, only PAL8-to-BGR8 which doesn’t support alpha and the palette is fixed with 256 entries defined by convention, while I would idea