Zhao Zhili:
> From: Zhao Zhili <zhiliz...@tencent.com>
>
> If there is a single group of SPS/PPS before an IDR frame, but no
> SPS/PPS after that, we will miss the chance to reset
> idr_sps_seen/idr_pps_seen. The result is missing SPS/PPS for all
> IDR frames except the first one.
>
> Signed-off-by: Zhao Zhili <zhiliz...@tencent.com>
> ---
> libavcodec/h264_mp4toannexb_bsf.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavcodec/h264_mp4toannexb_bsf.c
> b/libavcodec/h264_mp4toannexb_bsf.c
> index d11be455c2..bbdeca9c44 100644
> --- a/libavcodec/h264_mp4toannexb_bsf.c
> +++ b/libavcodec/h264_mp4toannexb_bsf.c
> @@ -259,7 +259,7 @@ static int h264_mp4toannexb_filter(AVBSFContext *ctx,
> AVPacket *opkt)
>
> count_or_copy(&out, &out_size, buf, nal_size,
> unit_type == H264_NAL_SPS || unit_type ==
> H264_NAL_PPS, j);
> - if (!new_idr && unit_type == H264_NAL_SLICE) {
> + if (unit_type == H264_NAL_SLICE) {
> new_idr = 1;
> sps_seen = 0;
> pps_seen = 0;
If I understand you correctly, you want that to include the parameter
sets from the extradata to every IDR frame without extradata if said IDR
frame follows a non-IDR frame after in-band parameter sets. There is
just one problem with this: Said in-band parameter sets might overwrite
parameter sets from extradata and inserting the outdated parameter sets
from extradata lateron might make the stream undecodable.
- Andreas
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