The "Could not use the selected format" error in EDIUS typically occurs when your or when hardware limitations prevent the specific encoding process . Troubleshooting the Export Error
The most common cause is attempting to export at a resolution or frame rate that is fundamentally incompatible with the selected codec. For example, trying to export a specific resolution like 1280x720 at a frame rate the chosen profile doesn't support for your device. Hardware/Software Conflict: The "Could not use the selected format" error
: Go to Settings > Project Settings > Change current setting and select a render format that is equal to or better than your export format. Hardware/Software Conflict: : Go to Settings > Project
Settings > System Settings > Project Note your project’s: System Settings >
EDIUS relies on DirectShow for some formats (AVI, WMV). Third-party codec packs (K-Lite, CCCP) can break EDIUS.