[FFmpeg-devel] [PATCH v13 2/9] avcodec/evc_parser: Added parser implementaion for EVC format

[James Almer]

On 10/24/2022 7:16 AM, Dawid Kozinski/Multimedia (PLT) /SRPOL/Staff 
Engineer/Samsung Electronics wrote:
> The parser should not return individual NAL units, but complete frames
> (access units in HEVC terminology, don't know if EVC defines something
> similar).
> 
> [REPLY] Current EVC decoder implementation needs individual NAL units.

What one decoder needs does not define what a bitstream assembling 
module does. There are many other users, like muxers, that may expect 
something else.
This parser needs to assemble and return a spec compliant access unit or 
its EVC equivalent when PARSER_FLAG_COMPLETE_FRAMES is not set, and pass 
it through when it's not (Like you're already doing). An external 
decoder that expects individual NALUs can then be fed individual NALUs. 
Functions like ff_h2645_packet_split() exist for this purpose for AVC 
and HEVC, and the same can be done for EVC and VVC.

> 
> --
> Anton Khirnov
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