Supposedly I can use QuickTime Player to rotate a video (mp4), but when I attempt to do so, it just changes the aspect ratio which stretches the image but does not rotate it.
Am I doing anything wrong or is this a defect? Is there any other software that should to this?
Yes, I just meant I picked rotate right (a 90° turn). Still, I can now see where it would be confusing to state an option that doesn't exist the way I wrote it.
Same version of the supplied QuickTime Player in High Sierra here.
It does initially appear to stretch the image. When I choose rotate right or left, the bounding box immediately turns 90°, but a partial of the image, on center, simply stretches to fill the new orientation (left image below). A second or so later, the video image itself rotates to match the box.
I got it to work by using SmartConverter to make a QuickTime compatible copy of the video and then using QuickTime to rotate it.
FWIW, an .MP4 is only a container so if you can't get it to work correctly it may use codecs QuickTime Player doesn't support. In other words, it may be an unsupported mp4 format.
What is the source of the video and have you tried more than one?
I'm having the same kinds of results. Some rotate correctly, some don't. I get better results using ff-Works.
It's been a while since I have worked with video files (as an amateur) so I may not use the correct terminology.
I believe the codec is H.264 and I created it on an android phone (LG G4). I tested it on another mp4 file and it rotated correctly.
Not sure if this is what you mean by codec ... the General Codec ID is mp42 (for the one which doesn't rotate correctly), and the Video is avc1; for one that rotates correctly the General Codec ID is qt 0000.00 (qt ) and the Video Codec ID is the same (avc1). I got this info using MediaInfo.
Not seeing that here. I just rotated a short .mp4 video 90° and it worked as expected.
When I attempt to rotate the video I only get rotate left and right options. Not 90° - is that an issue?
I have QuickTime Player 10.4.
Do either of those work?
Whatever works. 😎
Rotate video using QuickTime Player is not working
