I'm on a beginner level on Premiere Pro so please be gentle if this question is very basic. I'm trying to make a video that preserves the input video resolution exactly. My input video was an MP4 movie with resolution 1440 x 1080. It's an iPad screen recording using X-Mirage software. When I opened it normally in quicktime, it didn't seem stretched. However, when I imported the clip into Premiere, the clip appeared stretched. I checked the Properties of the clip and it turned out to have Pixel Aspect Ratio of 1.3333, which meant the pixels were stretched. My output sequence was also stretched out because of this, even though the output indicated that the resolution is the same: 1440 x 1080. I tried to comply with "Clip Mismatch Warning" and the result was still a stretched version. Please help!