Hi Robert, On Monday 21 November 2011 16:49:46 Robert Krakora wrote: > On Thu, Nov 10, 2011 at 3:34 PM, Robert Krakora wrote: > > On Thu, Nov 3, 2011 at 7:55 AM, Laurent Pinchart wrote: > >> On Thursday 03 November 2011 12:34:55 Robert Krakora wrote: > >> > Hi Guys, > >> > > >> > I did not see audio in the MPEG2 TS stream that I was able to get out > >> > of the FaceVsion camera. I purchased one for Laurent for development > >> > purposes. > >> > > >> > It sounds like he has been working with it some. > >> > >> Yes I've finally started working on it. Thanks for the hardware. > >> > >> I'll post prototype patches to the list. I've been able to get a video > >> stream out of the device, but it looks pretty bad when played in mplayer. > >> I'm not sure who is at fault that. > >> > >> > I wish these vendors would come to some kind of consensus on how to > >> > expose H.264 via USB interface. > >> > >> The latest version of the UVC 1.1 specification includes an H.264 > >> payload format. Unfortunately Microsoft, Logitech and Skype designed > >> something really horrible, without much input from anyone else. > >> > >> > It seems like it would make life easier for the UVC developers such as > >> > Laurent. > >> > >> I should come up with my own H.264 UVC payload specification :-) > >> > >> > If Laurent needs any more makes/models of H.264 cameras for > >> > development, I will accommodate. > >> > >> Thank you. I will first try to finish the Facevsion support. > > > > Let me know when you have some patches available for FaceVsion. In my > > hacking, I was able to get MPEG2 TS H.264, but the video looked very > > washed out although motion was fluid (not jerky). > > Have you had time to work on the FaceVsion support lately? ;-)
Not as much as I would have liked, but yes, I have :-) I've pushed patches to the uvcvideo-wip-mpeg branch in git://linuxtv.org/pinchartl/uvcvideo.git. The last patch is still work in progress, and I'm not totally happy with the "psize * 500" heuristic. I've also updated yavta to support writing all frames to a single file. Capturing 100 frames with yavta to a single file produces something I can play with mplayer, but not without issues. The video doesn't look very good, and mplayer prints lots of error messages: $ mplayer mpeg.bin MPlayer SVN-r33094-4.4.5 (C) 2000-2011 MPlayer Team Playing mpeg.bin. TS file format detected. VIDEO H264(pid=68) NO AUDIO! NO SUBS (yet)! PROGRAM N. 1 FPS seems to be: 29.970030 Load subtitles in ./ ========================================================================== Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family Selected video codec: [ffh264] vfm: ffmpeg (FFmpeg H.264) ========================================================================== Audio: no sound Starting playback... Movie-Aspect is 1.78:1 - prescaling to correct movie aspect. VO: [xv] 1280x720 => 1280x720 Planar YV12 V: 0.1 1/ 1 ??% ??% ??,?% 0 0 [h264 @ 0xae68a0]out of range intra chroma pred mode at 28 19 [h264 @ 0xae68a0]error while decoding MB 28 19 [h264 @ 0xae68a0]concealing 2101 DC, 2101 AC, 2101 MV errors V: 0.1 3/ 3 ??% ??% ??,?% 0 0 [h264 @ 0xae68a0]mb_type 109 in P slice too large at 19 16 [h264 @ 0xae68a0]error while decoding MB 19 16 [h264 @ 0xae68a0]concealing 2350 DC, 2350 AC, 2350 MV errors V: 0.2 5/ 5 ??% ??% ??,?% 0 0 [h264 @ 0xae68a0]P sub_mb_type 22 out of range at 47 7 [h264 @ 0xae68a0]error while decoding MB 47 7 [h264 @ 0xae68a0]concealing 3042 DC, 3042 AC, 3042 MV errors V: 0.3 7/ 7 ??% ??% ??,?% 0 0 [h264 @ 0xae68a0]out of range intra chroma pred mode at 60 3 [h264 @ 0xae68a0]error while decoding MB 60 3 [h264 @ 0xae68a0]concealing 3349 DC, 3349 AC, 3349 MV errors V: 0.3 9/ 9 ??% ??% ??,?% 0 0 [h264 @ 0xae68a0]P sub_mb_type 28 out of range at 50 20 [h264 @ 0xae68a0]error while decoding MB 50 20 [h264 @ 0xae68a0]concealing 1999 DC, 1999 AC, 1999 MV errors [...] -- Regards, Laurent Pinchart _______________________________________________ Linux-uvc-devel mailing list Linux-uvc-devel@lists.berlios.de https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
