Filename: rb_07_mar_15_hd.mov
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Container format: Quicktime/MOV
Video Format:  MPEG-4 AVC (H.264)
Audio Format: AAC
Video Resolution: HD 720p (1280 x 720)

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Problems with video: It stops playing at about 57 seconds

The video was downloaded from:
http://www.movedigital.com/go/rocketboom

I've been playing these HD (720p) videos from months without any problem. This started happening on this particular episode (March 15th) and from that date on. If you check previous videos (prior to March) they play fine.  This is, as suggested on the list, either a broken file or a bug in the h.264 decoder. It was confirmed with SVN r22161.