[FFmpeg-devel] movtext decode/encode improvements

[John Stebbins]

On Mon, 2020-04-06 at 13:16 -0700, Philip Langdale wrote:
> On Mon, 6 Apr 2020 11:51:55 -0600
> John Stebbins <jstebbins at jetheaddev.com> wrote:
> 
> > Patch series adds more complete decoding and encoding of color,
> > alpha,
> > font size, font name, and style tags for movtext.  It also fixes a
> > number of bugs.
> > 
> 
> Hi John,
> 
> Thanks for doing all of this! I'll try and take a look at these over
> the next few days.
> 
> 
> 

Thanks.  A heads up though.  I need to have a second look at patches 10
and 23 relating to frame sizes and font sizes.  I've been reading
libass code to get a deeper understanding of how it manages font sizes
and I think I've done that wrong.

ass font size is relative to a fixed 288 pixel height (I assumed it was
relative to PlayResY in the script).  And mov text font size is
relative to the specified subtitle track height which should be the
same as the video height.