[FFmpeg-trac] #6916(undetermined:new): DVBSUB ==> DVDSUB width oversized (canvas_size issue ?)
FFmpeg
trac at avcodec.org
Sat Dec 16 00:23:28 EET 2017
#6916: DVBSUB ==> DVDSUB width oversized (canvas_size issue ?)
-------------------------------------+-------------------------------------
Reporter: Sami32 | Type:
Status: new | enhancement
Component: | Priority: normal
undetermined | Version: git-
Keywords: DVDSUB | master
canvas | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Summary of the bug:
When converting DVBSUB to DVDSUB, the bitmap subtitle size is modified and
become a slighly bigger size after been converted to DVDSUB. See the
following images:
https://ibb.co/btyDh6 (DVBSUB original)
https://ibb.co/mxcnaR (DVDSUB convertion)
Sample used can be found here:
http://samples.ffmpeg.org/ffmpeg-
bugs/trac/ticket2838/BDAV%20recorded%20video%20sample.ts
How to reproduce:
{{{
% ffmpeg -canvas_size 720x576 -fix_sub_duration -i
"F:\!MEDIA_TEST_FILES\UMS Video Testing Suite (20150121)\TESTS\INTERNAL
SUBTITLES\BDAV recorded video sample.ts" -c:v copy -c:a copy -c:s dvdsub
-f matroska dvdsub.mkv
}}}
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Ticket URL: <https://trac.ffmpeg.org/ticket/6916>
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