Fixing File Compatibility by re-encoding in Finder.
Some video files may not play back well in ScreenFlow or otherwise show no video at all. While we like to see the files to investigate compatibility there's a workaround which may help in the meantime.
- Select the clip in Finder
- Right Click and use Services > Encode Selected Video Files
- You may then select Apple ProRes or, if you prefer a smaller file 1080p or 720p