Over the last for or five weeks when we send our stream to Vimeo they are saving the "original" video as a Flash file instead of MP4. Prior to this time period they were being saved as MP4.

I have a case open with them but still no resolution. We're running 23.0.0.66 and the only change that we've made in the last 30 days was having the stream natively start when the vMix stream is started (meaning that we don't have "Preview" selected on the Vimeo side which would require us to login to the Vimeo site and click on the "Go Live" button. The encoder on the vMix side is set to FFMPEG2, is there a setting that has changed and we're missing it somewhere?

Thanks for any thoughts!