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82c30c6c2d
Fix for ass subtitles jittering animations. More info in my GStreamer MR: https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1822
31 lines
1.3 KiB
Diff
31 lines
1.3 KiB
Diff
From 1c8538d8f8c2181106d626d67784af6db094036e Mon Sep 17 00:00:00 2001
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From: Rafostar <rafostar.github@gmail.com>
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Date: Thu, 19 Nov 2020 18:03:11 +0100
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Subject: [PATCH] assrender: fix smooth scaling by disabling hinting
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When ass hinting value is set to anything other than NONE,
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subtitles cannot use smooth scaling, thus all animations will jitter.
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The libass author warns about possibility of breaking some scripts when it is enabled,
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so lets do what is recommended and disable it to get the smooth scaling working.
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---
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ext/assrender/gstassrender.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/ext/assrender/gstassrender.c b/ext/assrender/gstassrender.c
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index e99458bf29..111987b9d8 100644
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--- a/ext/assrender/gstassrender.c
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+++ b/ext/assrender/gstassrender.c
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@@ -916,7 +916,7 @@ gst_ass_render_negotiate (GstAssRender * render, GstCaps * caps)
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ass_set_pixel_aspect (render->ass_renderer,
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(gdouble) render->info.par_n / (gdouble) render->info.par_d);
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ass_set_font_scale (render->ass_renderer, 1.0);
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- ass_set_hinting (render->ass_renderer, ASS_HINTING_LIGHT);
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+ ass_set_hinting (render->ass_renderer, ASS_HINTING_NONE);
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ass_set_fonts (render->ass_renderer, "Arial", "sans-serif", 1, NULL, 1);
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ass_set_fonts (render->ass_renderer, NULL, "Sans", 1, NULL, 1);
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--
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GitLab
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