Processing a 48 min MiniDV clip is ending with a 4 minutes clip

[Selur]

UMh.. this mean that WinDV is creating bugged outputs?

Not sure, what could cause this, but that the format changes inside a file is rather uncommon.
Some formats support it. Like myrsloik wrote, it were only some frames, so this is probably the result of some (smart) cutting where some headers got broken. (could also be some transfer error)

If this happens more often, I can add an option to enable the support for 'variableformat=True', but like I wrote that probably will cause problems later, since Hybrid and most filters assume that the input has a constant format (color space, sampling, matrix,..).
I expect something like this to potentially happen with transport stream captures (resolution, audio count, etc. can change in transport streams), with other stuff content it's really rare and Hybrid will not handle it properly.

Cu Selur