I can't get A-TV to play back MOV files is this normal. I have a software that converts video files to other formats, one of them being Apple TV. However the resulting file is a MOV file which doesn't play back on Apple TV. Should this program be converting the file to MPEG-4 instead?
.MOV is a container which can hold several video formats - the container type is ok, but either the video format, bitrate or sound may be wrong. It's debatable too if files above 4GB play properly.
If 720p then officially 24fps max (25fps has been done but not NTSC rates).
The programme looks nice but also seems relatively new, and as such may have early version bugs that need ironing out. Have you bought it or just tried a demo?
AC
From the specs link above:
Video formats supported
* H.264 and protected H.264 (from iTunes Store): Up to 5 Mbps, Progressive Main Profile (CAVLC) with AAC-LC audio up to 160 Kbps (maximum resolution: 1280 by 720 pixels at 24 fps, 960 by 540 pixels at 30 fps) in .m4v, .mp4, and .mov file formats
* iTunes Store purchased video: 320 by 240 pixels, 640 by 480 pixels, 720 by 480 pixels (anamorphic), or high-definition 720p
* MPEG-4: Up to 3 Mbps, Simple Profile with AAC-LC audio up to 160 Kbps (maximum resolution: 720 by 432 pixels at 30 fps) in .m4v, .mp4, and .mov file formats
Audio formats supported
* AAC (16 to 320 Kbps); protected AAC (from iTunes Store); MP3 (16 to 320 Kbps); MP3 VBR; Apple Lossless; AIFF; WAV; Dolby Digital 5.1 surround sound pass-through
Just looking quickly, I think the largest movie file I have is 3.48GB in iTunes and it plays on AppleTV. I have several over 2GB that I've watched recently too.
4Gb has been the historical stumbling block though (? related to FAT32 file size limit in some way even for those with NTFS or Mac formatted drives).