DickD

I use Prism 2.4.3 to convert FRAP screen capture AVI files to mp4. I purchased and used a licensed copy last spring and summer to convert dozens of files 5 to 20 minutes in length. I recently upgraded my PC from Windows 7 to Windows 10. All my attemps after the upgrade to Windows 10 stop at 15 seconds. The conversion looks okay and preview does work but also wont show beyound 15 seconds. Has anyone seen this 15 second limit?