Itunes U- M4V File Format- Wont play on Itouch?

I downloaded a few podcasts from the Itunes U, and I can't get them to play on my Itouch. Its in M4V file format. DO I need a special app? Can anyone help please?
-Rose

Not ALL MP4 can play on the iPhone (or, for that matter, any phone). MP4 supports a wide variety of resolutions and bitrates that are simply outside the capacity of the device to play back (and for that matter, you can use some MP4 features that don't apply to phone playback).
Anyway, the simple thing to do in iTunes is to select the video and then go to the Advanced menu and select "Make iPad / iPhone version" (or something like that). Then, sync.
Sepcifically, the iPhone 4 supports:
H.264 video up to 720p, 30 frames per second, Main Profile level 3.1 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format

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Itunes U- M4V File Format- Wont play on Itouch?

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