Quoting Mark Thompson (2017-07-29 23:16:34)
> This is able to modify some header metadata found in the VPS/SPS/VUI,
> and can also add/remove AUDs.
> ---
> doc/bitstream_filters.texi | 54 ++++++
> libavcodec/Makefile | 2 +
> libavcodec/bitstream_filters.c | 1 +
> libavcodec/h265_metadata_bsf.c | 429
> +++++++++++++++++++++++++++++++++++++++++
> 4 files changed, 486 insertions(+)
> create mode 100644 libavcodec/h265_metadata_bsf.c
>
> diff --git a/doc/bitstream_filters.texi b/doc/bitstream_filters.texi
> index f121d4757..834cf07f6 100644
> --- a/doc/bitstream_filters.texi
> +++ b/doc/bitstream_filters.texi
> @@ -107,6 +107,60 @@ confuse other transformations which require correct
> extradata.
> A new single global PPS is created, and all of the redundant PPSs
> within the stream are removed.
>
> +@section hevc_metadata
> +
> +Modify metadata embedded in an HEVC stream.
> +
> +@table @option
> +@item aud
> +Insert or remove AUD NAL units in all access units of the stream.
> +
> +@table @samp
> +@item insert
> +@item remove
> +@end table
> +
> +@item sample_aspect_ratio
> +Set the sample aspect ratio in the stream in the VUI parameters.
> +
> +@item video_format
> +@item video_full_range_flag
> +Set the video format in the stream (see H.265 section E.3.1 and
> +table E.2).
> +
> +@item colour_primaries
> +@item transfer_characteristics
> +@item matrix_coefficients
> +Set the colour description in the stream (see H.265 section E.3.1
> +and tables E.3, E.4 and E.5).
> +
> +@item chroma_sample_loc_type
> +Set the chroma sample location in the stream (see H.265 section
> +E.3.1 and figure E.1).
> +
> +@item tick_rate
> +Set the tick rate in the VPS and VUI parameters (num_units_in_tick /
> +time_scale). Combined with @option{num_ticks_poc_diff_one}, this can
> +set a constant framerate in the stream. Note that it is likely to be
> +overridden by container parameters when the stream is in a container.
> +
> +@item num_ticks_poc_diff_one
> +Set poc_proportional_to_timing_flag in VPS and VUI and use this value
> +to set num_ticks_poc_diff_one_minus1 (see H.265 sections 7.4.3.1 and
> +E.3.1). Ignored if @option{tick_rate} is not also set.
> +
> +@item crop_left
> +@item crop_right
> +@item crop_top
> +@item crop_bottom
> +Set the conformance window cropping offsets in the SPS. These values
> +will replace the current ones if the stream is already cropped.
> +
> +The unit of these values is chroma pixels after subsampling (see
> +H.265 section 7.4.3.2.1).
I suppose this should be updated in line with the h264 one.
Otherwise looks ok.
--
Anton Khirnov
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