SPIKE: is the output failing because of different framerates or chroma subsampling or both?

[AudreyBeard]

Since compressure relies on the concat protocol, there are issues that crop up when trying to combine different sources with different framerates or chroma subsampling. I'm not sure which is the case yet, so need to do a spike to figure it out

• add option to change framerate during pre-slice transcode
• add option to change chroma subsampling during pre-slice transcode

[AudreyBeard]

concatenation with different codecs still require identical framerate. But our current implementation requires them to have the same codecs and "codec properties," so maybe it's both

[AudreyBeard]

The "concatenation with different codecs" comment above is concerned with the concat filter, which seems to still require a lot of matching properties

[AudreyBeard]

It looks like single framerate is explictly required for AVI files, which is the output format. Chroma subsampling is probably required to match, since I've never seen variable-subsampling in videos

[AudreyBeard]

turns out it was chroma subsampling and audio channels! We'll see if the framerate is problematic later