Why does compressor output 960x540 when frame size is specified "up to 1280x720"? Is there any way to produce output video at 1280x720 resolution using the "Apple Devices HD (Most Compatible)" setting in Compressor? When I specify a frame size of "up to 1280x720", the output renders at 960x540. This screenshot shows what I'm talking about:



By contrast, if I specify a frame size of "up to 1920x1080" or "up to 960x540", Compressor produces output at the specified resolution. My source video is at 1920x1080 resolution.
The original AppleTV could only playback at 1280x720 at 24fps. Because your video is at 25fps, it has to use a slightly lower resolution. If you either lower the frame rate (probably not an option) or exclude the original AppleTV, it should export at the higher resolution. I believe there's another setting than the "Most Compatible" one which excludes the older AppleTVs.