On Mon, Mar 14, 2022 at 19:57:05 +0000, Soft Works wrote: > > > ass_set_pixel_aspect() is setting settings.par and if I'm not mistaken, > > > an existing par setting leads to the storage size setting to be ignored: > > > > It’s not overridden. Only the explicit PAR is currently preferd over the > > implicit derivation from storage and frame size. However as I stated in > > the patch description and the comment: > > “some tags depend on the exact storage resolution of the video” > > “it actually goes farther than just the aspect ratio” > > > > I found only one other place where storage_h is used (for determining > blur size) but I didn't find any other usage in the libass source code. > That's what I'm wondering about.
Well, blur is one of the things that depend on it. If you follow the usage of the blur scale, you'll see it also plays a role in the projection matrix for 3D-transforms (what the provided samples use) and if ScaledBorderAndShadow is not set to "yes", it also affects some other scaling values. This unfortunate dependence is a result of how SSA and then ASS histoically developed and required to maintain compaitibility with existing subtitles. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
