Indeed, we do try to extract the rotation flags from the original and apply them when we stream the video. One possible issue is that different devices seem to apply different criteria to determine the rotation. For instance, the iPhone seems to detect the rotation only at the beginning of the video capture so if you rotate your device after you started capturing, you end up with content that has a messed up rotation.
Having said that, there is a very good chance that you are simply hitting some bug that I'd love to fix :) If you are willing to share the problematic video, you can hit me up at pierpaolo@dropbox.com and we can go from there.
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Watching videos on dropbox.com with my head turned sideways is uncomfortable.
Please could you use the rotate flag for videos?
Hello there, Pierpaolo from Dropbox here.
Indeed, we do try to extract the rotation flags from the original and apply them when we stream the video. One possible issue is that different devices seem to apply different criteria to determine the rotation. For instance, the iPhone seems to detect the rotation only at the beginning of the video capture so if you rotate your device after you started capturing, you end up with content that has a messed up rotation.
Having said that, there is a very good chance that you are simply hitting some bug that I'd love to fix :) If you are willing to share the problematic video, you can hit me up at pierpaolo@dropbox.com and we can go from there.
Thanks for your reply.
You are right - on the iPhone it does things correctly unless I rotate the phone again.
On my camera ffmpeg says it never sets the flag. So not your fault :)