improve disposition properties

[Tengyyy]

No description provided.

[saudet]

Are there cases where that actually changes something? In any case, it's probably a decision that should be left up to the user.

[Tengyyy]

Well in my use case I want to grab a cover image only if the file contains a stream with the attached pic disposition. And as it is right now if no stream with the right disposition is found the video stream will be set to the default/first video stream. So while I'm expecting to get the cover image when I call grabImage(), I will instead get the first frame of the default video stream

[saudet]

My question is, why can't you call setVideoDisposition(AV_DISPOSITION_DEFAULT) in your application?

[Tengyyy]

Because my app doesnt know if the framegrabber found a stream with the disposition value that I requested or not. But if the start method were to reset disposition back to default, then I could see it in my app by calling getvideodisposition().

[saudet]

To accomplish that, please override getVideoDisposition() instead.