Adding non-video/audio/subtitle streams does not work for Matroska

[mjc]

trafficstars

I'm not sure this is the right fix but it definitely worked for me to skip these.

I think the right thing would be to have a mapping of all the supported types for Matroska.

[FallingSnow]

Can you provide me documentation for this?

It's my understanding that Matroska should support any data as an attachment. The code you have commented out works for attachments of font formats and images in my testing.

[binair-io]

I also have a commit fixing this issue by excluding the data stream. https://github.com/binair-io/h265ize/commit/11f932cc5d8061372740062f94db1e524aecde6b . I also bumped into this issue, and others have as well : https://github.com/FallingSnow/h265ize/issues/166