file/codec error

Question

I have created a video using Premiere Elements 14 with photos, video, and music.  File types are jpeg, aac, mp3, and mp4.  Everything seemed to be fine until I added the mp4 video clip and credits at the end of the video.  Now I am getting the famous "this type of file is not supported or the required codec is not installed".  I am using Windows 10, version 21H2.  I'm just not sure where to go from here since these file types are listed as supported and I don't have a clue as how to deal with the codec thing.

John T Smith · Accepted Answer

2 things

Is that 3gp video from a cell phone?

256x480 is a VERY odd size that may not edit in PrElements

Your video uses a Variable Frame Rate See https://community.adobe.com/t5/Premiere-Pro/Variable-frame-rate-video-with-Premiere-Pro/td-p/4601935
Use https://handbrake.fr/ open source transcoder/converter to convert to Constant Frame Rate

John T Smith · Answer

MP4 is a wrapper, what is inside YOUR wrapper - Exactly what is INSIDE the video you are editing?
Report back with the codec details of your file, use the program below
Free program to get file information for PC/Mac http://mediaarea.net/en/MediaInfo/Download
- when you analyze your file in MediaInfo and post a screen shot in the forum, do so in TREE view
- post your information IN your message, not as an attachment that someone would have to download

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