I recently had a need to mux an AV1 stream to MP4.
In order to create `AP4_Av1SampleDescription`, the information included in the sequence header should be used, but we confirmed that `AP4_Av1FrameParser` does not exist.
In order to solve the problem we are facing right now, we are directly parsing and using the sequence header.
However, I want to maintain a consistent source code by using `AP4_Av1FrameParser` included in libap4 like `AP4_AvcFrameParser`.
I hope you will review it positively. Thank.
Could you please add `AP4_Av1FrameParser`?
This is a GitHub Issue
repo:Bento4
owner:axiomatic-systems
Title : Could you please add `AP4_Av1FrameParser`?
Issue date:

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I recently had a need to mux an AV1 stream to MP4.
In order to create `AP4_Av1SampleDescription`, the information included in the sequence header should be used, but we confirmed that `AP4_Av1FrameParser` does not exist.
In order to solve the problem we are facing right now, we are directly parsing and using the sequence header.
However, I want to maintain a consistent source code by using `AP4_Av1FrameParser` included in libap4 like `AP4_AvcFrameParser`.
I hope you will review it positively. Thank.
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