Quoting zhilizhao(赵志立) (2023-02-28 10:00:15)
> 
> > On Jan 6, 2023, at 23:52, Zhao Zhili <quinkbl...@foxmail.com> wrote:
> > 
> > From: Zhao Zhili <zhiliz...@tencent.com>
> > 
> > v2:
> > 1. Check vps_max_layers and vps_max_layer_id inside hevc decoder
> > 2. Add hevc_extract_layer bsf to do the job rather than modifing 
> > hevc_metadata,
> > 3. Check vps_max_layers_minus1 and vps_max_layer_id inside bsf
> > 4. Update vps_max_layers_minus1 and vps_max_layer_id when rewrite as base 
> > layer
> > 5. vps_extension should be updated rather than drop entirely, add a TODO
> 
> Will push soon if there's no objections.

Can't we do this without weird bitstream filtes and obscure options
leaking to the user? It's all signalled in the bitstream in a rather
straightforward way. Just extend hevcdec to decode it.

-- 
Anton Khirnov
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