[FFmpeg-devel] [PATCH] avcodec/cfhd: Check transform type

Reto Kromer lists at reto.ch
Sat Aug 29 09:06:12 EEST 2020


Paul B Mahol wrote:

>On 8/28/20, Michael Niedermayer <michael at niedermayer.cc> wrote:

>>>>Is there some specification for this ?
>>>>i was looking yesterday but google failed to point me to one
>>>>
>>>
>>> No specifications, just SDK on github.
>>>
>>> Also I'm unsure if that is sufficient fix for the underline
>>>issue.
>>
>>I suspect the decoder has more issues. I was hoping that there
>>is a specification that i could base validity and tag ordering
>>checks on.
>
>Look at encoder, it follows tag order, note that some tags are
>purely optional.

Behind their paywall there are:

  - SMPTE ST 2073-1:2014
  - SMPTE RP 2073-2:2014

which do not include all the relevant information.

The official SDK code by GoPro on GitHub is hard to read, at
least for me. Emeric Grange did a cleanup and published an
alternate code on his own repo.

Best regards, Reto



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