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| author | Devin Heitmueller <devin.heitmueller@ltnglobal.com> | 2023-05-05 15:09:06 -0400 |
|---|---|---|
| committer | Limin Wang <lance.lmwang@gmail.com> | 2023-05-11 22:06:20 +0800 |
| commit | 0e12cdc69c86daa11608cfe809ba1aa848f91a09 (patch) | |
| tree | cc30db17920a42374f8c743c0981e2bc9daa309a /doc | |
| parent | f304c3a729b2c710de2b1bf3c1f9f1c42d17d4f1 (diff) | |
| download | ffmpeg-0e12cdc69c86daa11608cfe809ba1aa848f91a09.tar.gz | |
avfilter/vf_ccrepack: Add new filter to repack CEA-708 side data
THis filter can correct certain issues seen from upstream sources
where the cc_count is not properly set or the CEA-608 tuples are
not at the start of the payload as expected.
Make use of the ccfifo to extract and immediately repack the CEA-708
side data, thereby removing any extra padding and ensuring the 608
tuples are at the front of the payload.
Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/filters.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index b6e13afdfd..7e0c87d0fa 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -9083,6 +9083,16 @@ Only deinterlace frames marked as interlaced. The default value is @code{all}. @end table +@section ccrepack + +Repack CEA-708 closed captioning side data + +This filter fixes various issues seen with commerical encoders +related to upstream malformed CEA-708 payloads, specifically +incorrect number of tuples (wrong cc_count for the target FPS), +and incorrect ordering of tuples (i.e. the CEA-608 tuples are not at +the first entries in the payload). + @section cas Apply Contrast Adaptive Sharpen filter to video stream. |