Hello,
Sorry but you didn't provide details of your issue!
OK. I'm putting an example and please try it:
1- Download this free mp4 video from this link:
https://www.videezy.com/abstract/44249-particle-strings-background-video
2- Convert the video in MJPEG format:
2-1 Rename the video "01__2822_29.mp4" to "test.mp4"
2-2 Apply this command to the downloaded video:
ffmpeg -i test.mp4 -s 480x272 -vcodec mjpeg -qscale 1 -an output.avi
3- Put the generated video "output.avi" in the path: <YourProject>\TouchGFX\assets\videos
4- From TouchGFX designer please select output.avi as the video to play and try to run the simulator to visualize the video.
5- If all is OK. You can run the example on the target.
Note: these steps were tested with STM32F769-DISCO board.