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${ noResults }
6 Commits (3c52f73e253eba81e4c58b69d8a8eb578128bef4)
| Author | SHA1 | Message | Date |
|---|---|---|---|
Niklas Haas
|
cf37c3fb6c |
avcodec/h264_slice: compute and export film grain seed
From SMPTE RDD 5-2006, the grain seed is to be computed from the following definition of `pic_offset`: > When decoding H.264 | MPEG-4 AVC bitstreams, pic_offset is defined as > follows: > - pic_offset = PicOrderCnt(CurrPic) + (PicOrderCnt_offset << 5) > where: > - PicOrderCnt(CurrPic) is the picture order count of the current frame, > which shall be derived from [the video stream]. > > - PicOrderCnt_offset is set to idr_pic_id on IDR frames. idr_pic_id > shall be read from the slice header of [the video stream]. On non-IDR I > frames, PicOrderCnt_offset is set to 0. A frame shall be classified as I > frame when all its slices are I slices, which may be optionally > designated by setting primary_pic_type to 0 in the access delimiter NAL > unit. Otherwise, PicOrderCnt_offset it not changed. PicOrderCnt_offset is > updated in decoding order. Co-authored-by: James Almer <jamrial@gmail.com> Signed-off-by: Niklas Haas <git@haasn.dev> Signed-off-by: James Almer <jamrial@gmail.com> |
3 years ago |
James Almer
|
e3b5ff17c2 |
avutil/film_grain_params: add support for H.274 Film Grain Characteristics
Used by codecs like H.264, HEVC, and VVC. Signed-off-by: James Almer <jamrial@gmail.com> |
3 years ago |
|
James Almer
|
53b4550bdd |
avutil/film_grain_params: fix doxy for ar_coeff_* fields
Signed-off-by: James Almer <jamrial@gmail.com> |
4 years ago |
|
James Almer
|
ee61d4dc68 |
avutil/film_grain_params: add more details to some AVFilmGrainAOMParams fields
Signed-off-by: James Almer <jamrial@gmail.com> |
4 years ago |
Lynne
|
2ba04670c3
|
lavu/film_grain_params: fix typo in type enum
Ref: xkcd #1015 |
4 years ago |
|
Lynne
|
4f9ee87253
|
libavutil: introduce AVFilmGrainParams side data
This patch introduces a new frame side data type AVFilmGrainParams for use with video codecs which support it. It can save a lot of memory used for duplicate processed reference frames and reduce copies when applying film grain during presentation. |
4 years ago |