Hi ive imported footage to the studio from an android smartphone. After finishing editing I wish to export it back to the phone so it can be uploaded to the platform Tiktok. However I have tried multiple renders and dimensions and the video comes through on the phone tiny with giant black borders all around it. On the preview there are also borders but only either side and I assumed these would disappear and the video would return to smartphone size upon exporting it back to my phone. Does anyone have a solution to this problem ? Thanks.