[FFmpeg-trac] #4066(ffmpeg:new): sub2video could scale subtitles to HD video

FFmpeg trac at avcodec.org
Wed Oct 29 20:01:42 CET 2014

#4066: sub2video could scale subtitles to HD video
             Reporter:  mikaraento   |                     Type:
               Status:  new          |  enhancement
            Component:  ffmpeg       |                 Priority:  normal
             Keywords:               |                  Version:
             Blocking:               |  unspecified
Analyzed by developer:  0            |               Blocked By:
                                     |  Reproduced by developer:  0
 Summary of the bug: with (some?) DVB TS input, HD video, sub2video output
 is at SD scale and the subtitles are at the wrong place and smaller scale.
 VLC handles the same file correctly when playing.

 How to reproduce:
 $ ffmpeg -y -i hd_with_sub_wrong_scale.ts -filter_complex
 '[0:0][0:3]overlay[outv0]' -map 0:1 -map '[outv0]' problem.ts
 ffmpeg version N-67065-g2fa08fd Copyright (c) 2000-2014 the FFmpeg
   built on Oct 23 2014 08:58:30 with Apple LLVM version 6.0
 (clang-600.0.51) (based on LLVM 3.5svn)

 input file uploaded to upload.ffmpeg.org/incoming

Ticket URL: <https://trac.ffmpeg.org/ticket/4066>
FFmpeg <https://ffmpeg.org>
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