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avfilter/vf_subtitles: pass storage size to libass

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Due to a quirk of the ASS format some tags depend on the exact storage
resolution of the video, so tell libass via ass_set_storage_size.

Reviewed-by: Soft Works <softworkz@hotmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
Oneric 2022-03-14 20:06:39 +01:00 committed by Michael Niedermayer
parent a50aa980eb
commit 482d51884c
1 changed files with 5 additions and 1 deletions
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6
libavfilter/vf_subtitles.c
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@ -146,9 +146,13 @@ static int config_input(AVFilterLink *inlink)
ff_draw_init(&ass->draw, inlink->format, ass->alpha ? FF_DRAW_PROCESS_ALPHA : 0);
ass_set_frame_size (ass->renderer, inlink->w, inlink->h);
if (ass->original_w && ass->original_h)
if (ass->original_w && ass->original_h) {
ass_set_pixel_aspect(ass->renderer, (double)inlink->w / inlink->h /
((double)ass->original_w / ass->original_h));
ass_set_storage_size(ass->renderer, ass->original_w, ass->original_h);
} else
ass_set_storage_size(ass->renderer, inlink->w, inlink->h);
if (ass->shaping != -1)
ass_set_shaper(ass->renderer, ass->shaping);