General: Oiio conversion multipart fix

[iLLiCiTiT]

Brief description

Don't define input channels if input is multipart exr.

Description

When converting multipart exr for ffmpeg it can't handle definition of channels on input because there are multiple subimages which cause crash if oiiotool.

Extended few types in xml info result parsing and added ability to receive information about every subimage in exr.

Additional information

The output has all subimages (which can be big exr) that is because ffmpeg then created transparent image without any content. Not sure why but it's an issue. Also if any subimage in the exr has attributes with invalid characters or too long value it would cause issues in ffmpeg too -> future enhancements.

Testing notes:

1. It should be possible to convert multipart exr for ffmpeg (e.g. in extract review)

[antirotor]

Looks good but since we are messing up now with xml, shouldn't we parse it and work with it that way instead of hacking it as string?

[iLLiCiTiT]

Looks good but since we are messing up now with xml, shouldn't we parse it and work with it that way instead of hacking it as string?

I don't know to which code is this related?

[LiborBatek]

Did test in maya2022 and arnold with Multipart and Merge AOVs
Deadline job finnished normally without any errors and published all assets

here is the scrncap of published data

however when played the mp4 review even thumbnail looked fine the vid is completely black...

[antirotor]

Looks good but since we are messing up now with xml, shouldn't we parse it and work with it that way instead of hacking it as string?

I don't know to which code is this related?

all lines like if line == "</ImageSpec>": - wouldn't be cleaner to use xml dom and not strings?

[LiborBatek]

Not working fully. Pls see comments.

[LiborBatek]

All seems ok now.

Published and review for beauty pass was made and seems fine.