I compared ffmpeg rotate=0 and rotate=90. *Compatible Brands : isom, iso2, avc1, mp41 displaymatrix: rotation of 90.00 degreesĮxiftool input.mp4 =ExifTool Version Number : 10.87 = equal attributesįfprobe input.mp4 *Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '.\input.mp4': Attached is before and after metadata from ffprobe and exifer.Īn additional odd finding is the ffmpeg rotate=90 command makes a ccw rotation, which in ffprobe is (cw) 270° in metadata, but (ccw)90° in displaymatrix side data. My problem with those solutions is that even though it copies most of the metadata, some parts are lost, and the file is 700kb smaller. Many similar questions exist, most answers suggest using ffmpeg -i input.mp4 -map_metadata 0 -metadata:s:v rotate=90 -codec copy output.mp4 I just want to change the rotation flag in a.
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