dystopiantv escribió I created the video under the wrong settings which set my aspect ratio at 720x480 and I clicked "set to frame size" the videos and all of them are at 1920x1080p and I have created a new sequence at the correct settings (1920x1080) and copy pasted all my work to the new sequence, Do not proceed in this way, it is generating an increase in processing and a considerable loss of quality, Premiere will sequentially process your work, scaling 2 times its image. In the original sequence, select the timeline panel, go to the menu Sequence> Sequence Settings and in Editing Mode, then change the value in Frame size, 1920 ---- 1080. Also check the Pixel Aspect Ratio option, you will probably have to change Square Pixel (1.0). And the Fields option, with the specifications of the original video, which can be, No Fields (progressive scan)., and ok. If you do not need to uncheck "set to frame size".
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