If the file is corrupt or uses an unsupported codec (like HEVC/H.265 on older systems), you should it. This converts the "filling" of the file into something more compatible. Can't import MP4 files. - Adobe Community
: A quick "hack" is to change the file extension from .mp4 to .mpg . This forces the software to use a different internal importer. 3. Transcoding: The "Nuclear Option" g60329.mp4
: Sometimes your graphics card clashes with the video encoding. In your software preferences, uncheck "Enable hardware acceleration decoding" and restart. If the file is corrupt or uses an