This is one of the most inane messages I have ever seen. And I have seen a few.

[crb42]

Well, I could not understand this message because I could not understand it.  Your turn.

[Derek Cross]

Which version of Photoshop and OS?
Assuming the file is not corrupt (can it be played in another video application?)
Do one of the following:

• To open a video file directly, choose File > Open.

• To import video into an open document, choose Layer > Video Layers > New Video Layer From File.

If you can't import, it try resetting your Photoshop preferences.

[davescm · Accepted solution]

Hi,

The .mp4 file extension means the file is a container for a video format within it. The actual video within it can use a variety of codecs, i.e methods of encoding the video. The error message is stating that either the video is coded using a codec that cannot be opened by the codecs included in Photoshop or the file is corrupt.

Try opening it with Handbrake, or similar, and if it can be opened, re-encoding it as h.264 within the .mp4 container

Dave

[crb42]

Thanks for the responses.  You are correct.  It is an h.265 video.  I just thought it was a funny message.

chuck