I suspect it's the aspect ratio or frame rate causing the problem. This happens to me also when ever I try and up load to blip any size other than 4x3 or 16x9 out of Sony Vegas with a weird frame rate. Try rendering out in the aspect ratio it was recorded in or try one of these at 30fps 640 x 480 480 x 360 320 x 240 My solution was to render out to Huffy then convert to VP6 flv format in Sorensen Squeeze, then up that to blip which will NOT re-transcode the flv file. Much better quality, but this may not be your solution. Cheers Rambo http://rambos-locker.blogspot.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Adam Quirk Sent: Wednesday, 7 January 2009 9:27 AM To: Videobloggers Subject: [videoblogging] MP4 video track missing Hi all,
I've been trying to transcode a batch of MP4s that were exported from Vegas Pro as h264/AAC. The strange thing is they play fine for me, but when I upload them to Blip, their server can't transcode them. So I tried recompressing them myself in QT Pro and the output has no video track. Even viewing the info for the mp4 in QT Pro shows a video track with n/a as filesize. So strange. Hoping that Jake or one of you other video codec masters can shine some light on this. Here is a sample of the videos in question: http://360.malltale <http://360.malltalent.com/media/arthur_pendragon.mp4> nt.com/media/arthur_pendragon.mp4 And a screenshot: http://360.malltale <http://360.malltalent.com/media/mp4_example.jpg> nt.com/media/mp4_example.jpg And the readout from file analysis: SUPER (c) - Multimedia Analysis Box * (**by **http://mediainfo. <http://mediainfo.sourceforge.net> sourceforge.net) * Analyzing the source file arthur_pendragon.mp4 General #0 *Complete name :* C:\Documents and Settings\Quirk\Desktop\Mall Talent\Performance Videos\arthur_pendragon.mp4 *Format :* MPEG-4 *Format/Info :* ISO 14496-1 version 2 *Format/Family :* MPEG-4 *File size :* 15.2 MiB *PlayTime :* 1mn 260ms *Bit rate :* 2114 Kbps *StreamSize :* 43.5 KiB *Encoded date :* UTC 2008-12-13 17:52:41 *Tagged date :* UTC 2008-12-13 17:52:41 Video #0 *Codec :* H.264 *Codec/Info :* H.264 (3GPP) *PlayTime :* 1mn 260ms *Bit rate :* 1980 Kbps *Width :* 360 pixels *Height :* 240 pixels *Display Aspect ratio :* 1.500 *Frame rate :* 59.940 fps *Bits/(Pixel*Frame) :* 0.375 *StreamSize :* 14.2 MiB *Language :* English *Encoded date :* UTC 2008-12-13 17:52:41 *Tagged date :* UTC 2008-12-13 17:52:41 Audio #0 *Codec :* AAC LC *Codec/Info :* AAC Low Complexity *PlayTime :* 1mn 245ms *Bit rate :* 128 Kbps *Bit rate mode :* CBR *Channel(s) :* 2 channels *Channel positions :* L R *Sampling rate :* 48 KHz *Resolution :* 16 bits *StreamSize :* 941 KiB *Language :* English *Encoded date :* UTC 2008-12-13 17:52:41 *Tagged date :* UTC 2008-12-13 17:52:41 *Adam Quirk* / Wreck & Salvage <http://wreckandsalv <http://wreckandsalvage.com> age.com> / qu...@wreckandsalva <mailto:quirk%40wreckandsalvage.com> ge.com / +1 551.208.4644 (m) / imbullemhead (aim) [Non-text portions of this message have been removed] [Non-text portions of this message have been removed]
