Conversion failed when using -level 0

[retokromer]

When using the option -level 0 on regular RGB48 content, I receive an error:

[JeromeMartinez]

I see, I force "defaults" for all levels, but e.g. slicecrc is available only from v3. Will not force unsupported features when a level not supporting the feature is requested.

[JeromeMartinez]

Workaround: -level 0 -slicecrc 0 -slices 1

[retokromer]

Hmm… -slicecrc 0 ;-)

[JeromeMartinez]

You try -level 0 so... normal ;-)

[JeromeMartinez]

Thinking more about the issue, using levels 0 & 1 remove features, and these removed features (slices) are useful for RAWcooked. So I move on providing a message " -level 0" does not permit slices, is it intended? if so, add " -slices 1" to the command instead of removing automatically the support of slices when " -level 0" is provided.

Note: hesitating about doing same for " -slicecrc", as actually FFmpeg can add CRC in version 0/1 of FFV1 (and RAWcooked, as well as MediaConch, read them), even if it is not standard.

[retokromer]

As said, I’m in favour of requiring the version 3 or above of FFV1 for RAWcooked, but this is not blocking at all.