When importing music, the file format is always not supported. First, Premiere is a streamlined version and does not have a codec. Second, it is possible that the encoding of MP3 audio files is not standardized. The solution is as follows:

1. Find the original video or music, then open the format factory and drag the file into the format factory.

2. In the format factory, you can choose the MP4 format, of course you can also choose other formats, set the output to high quality and add tasks.

3. If you have higher requirements, click on Configuration to adjust the bitrate.

4. After adding a task to Format Factory, you have to click Start. If you don’t click Start, it will not start. The output location of this file, if not specifically set, is usually the same as the location of the original file. The folder is the same folder.

5. Finally, the video or audio format has been successfully converted. All that is required is to use the format factory to operate it. It does not necessarily require converting the file format, such as MP3 to MTV format.