Stellar Knowledge Base
iPhone supports H.264, MP4, MOV, and MPEG-4 videos. The output video obtained from Stellar Converter for Audio Video won’t open on your iPhone XS if the video doesn’t belong to any of these formats.
Thus, you should first convert the video file into an iPhone compatible format with the help of Stellar Converter for Audio Video.
You can convert your video file to either MP4 or MOV format by following the steps given below.
Steps to convert video to iPhone supported format:
Figure: Add File window in software
Figure: Output Format option
Figure: Mobile Advanced Settings window in software
Now try to play your video in iPhone XS.