How do you change mp4 to 3gp during downloading?

To change an MP4 file to 3GP format during downloading, you can use a video converter tool that supports both formats. Some online converters allow you to paste the download link and select the desired output format before initiating the download. Alternatively, you can use software like FFmpeg or VLC Media Player to convert the file after downloading it. Just ensure that the tool you choose supports the conversion from MP4 to 3GP.