Usability of output format handling

Hi,

When playing around with it I was trying to figure out different output formats for the rendered image. In case it wouldn’t understand the format, unfortunately it would tell me at the frames end when it tried to create the output file.
Even though my render times are fast, I would suggest to make an output format check early, maybe even when calling Display(…) to prevent possibly long render times for nothing.

Regards,
Sebastian

Ah, yes. I hadn’t though of that. I can implement a sanity check on the file extensions before the render begins. Thanks for the feedback.