[FFmpeg-devel] [PATCH v17 14/19] avfilter/overlaytextsubs: Add overlaytextsubs and textsubs2video filters

[Michael Niedermayer]

On Sat, Nov 27, 2021 at 07:38:07PM +0000, Soft Works wrote:
> - overlaytextsubs {VS -> V)
>   Overlay text subtitles onto a video stream.
> 
> - textsubs2video {S -> V)
>   Converts text subtitles to video frames
> 
> Signed-off-by: softworkz <softworkz at hotmail.com>
> ---
>  configure                        |   2 +
>  doc/filters.texi                 | 113 ++++++
>  libavfilter/Makefile             |   2 +
>  libavfilter/allfilters.c         |   4 +-
>  libavfilter/vf_overlaytextsubs.c | 633 +++++++++++++++++++++++++++++++
>  5 files changed, 753 insertions(+), 1 deletion(-)
>  create mode 100644 libavfilter/vf_overlaytextsubs.c

(tested this as it was the last applying automatically)

this or a previous patch breaks:

./ffmpeg -i ~/tickets/1332/Starship_Troopers.vob -scodec xsub -qscale 2 -an  file1332.avi

  Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p(tv, top coded first (swapped)), 720x480 [SAR 32:27 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 29.97 tbn
    Metadata:
      encoder         : Lavc mpeg4
    Side data:
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
  Stream #0:1: Subtitle: xsub (DXSB / 0x42535844)
    Metadata:
      encoder         : Lavc xsub
[mpeg @ 0x564897855840] New subtitle stream 0:7 at pos:8497166 and DTS:1999.51ss speed=14.6x    
Subtitle encoding failed - Error code: -1397118274
Conversion failed!


[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

No snowflake in an avalanche ever feels responsible. -- Voltaire
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