On Sat, 06. Feb 11:30, Nuo Mi wrote:
> On Mon, Jan 25, 2021 at 10:21 PM Nuo Mi <nuomi2...@gmail.com> wrote:
>
> >
> > On Mon, Jan 25, 2021 at 10:17 PM Nuo Mi <nuomi2...@gmail.com> wrote:
> >
> >> ---
> >> libavcodec/cbs_h2645.c | 3 ++-
> >> 1 file changed, 2 insertions(+), 1 deletion(-)
> >>
> >> diff --git a/libavcodec/cbs_h2645.c b/libavcodec/cbs_h2645.c
> >> index 6f3abf6b0b..da541407cf 100644
> >> --- a/libavcodec/cbs_h2645.c
> >> +++ b/libavcodec/cbs_h2645.c
> >> @@ -494,8 +494,9 @@ static int
> >> cbs_h2645_fragment_add_nals(CodedBitstreamContext *ctx,
> >> const H2645NAL *nal = &packet->nals[i];
> >> AVBufferRef *ref;
> >> size_t size = nal->size;
> >> + enum AVCodecID codec_id = ctx->codec->codec_id;
> >>
> >> - if (nal->nuh_layer_id > 0)
> >> + if (codec_id != AV_CODEC_ID_VVC && nal->nuh_layer_id > 0)
> >>
> > Hi Mark,
> > Could you explain why we need this for other codecs?
> > thanks
> >
>
> Hi Mark,
> Any insight on this?
If I remember correctly some of the parameter sets are parsed differently for
nuh_layer_id > 0 layers, which was not supported by cbs.
Just tried it again on a multi-layers stream and cbs errors out. I can forward
you the file if you want.
[trace_headers @ 0x56094c620440] Sequence Parameter Set
[trace_headers @ 0x555557c34440] 0 forbidden_zero_bit
0 = 0
[trace_headers @ 0x555557c34440] 1 nal_unit_type
100001 = 33
[trace_headers @ 0x555557c34440] 7 nuh_layer_id
000001 = 1
[trace_headers @ 0x555557c34440] 13 nuh_temporal_id_plus1
001 = 1
[trace_headers @ 0x555557c34440] 16 sps_video_parameter_set_id
0000 = 0
[trace_headers @ 0x555557c34440] 20 sps_max_sub_layers_minus1
111 = 7
[trace_headers @ 0x555557c34440] sps_max_sub_layers_minus1 out of range: 7, but
must be in [0,6].
[trace_headers @ 0x555557c34440] Failed to read unit 2 (type 33).
Error initializing bitstream filter: trace_headers
Error initializing output stream 0:0 --
--
Andriy
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