Le Jeudi 7 Décembre 2006 14:31, Simon Morlat a écrit :
> Hello,
>
> I've bought a Logitech Quickcam Pro 5000 (Bus 004 Device 003: ID 046d:08c5
> Logitech, Inc.), and I've got some problems with it and the uvc driver.
> I use linphone (a sip video phone I'm the maintainer). The picture is
> grabbed using mmap v4lv2 standart method with MJPEG format, then passed to
> ffmpeg to decode it as YUV420P and then displayed.
>
> Sometimes (quite often), it works well.
> Sometimes, despite pictures display correctly, ffmpeg complains with those
> warnings:
>
> [mjpeg @ 0xb6c8e9a8]mjpeg: unsupported coding type (c7)
> [mjpeg @ 0xb6c8e9a8]mjpeg: unsupported coding type (c6)
>
> [mjpeg @ 0xb6c8e9a8]picture size invalid (62975x62965)
> [mjpeg @ 0xb6c8e9a8]picture size invalid (62975x62965)
>
> [mjpeg @ 0xb6c8e9a8]huffman table decode error
>
> [mjpeg @ 0xb6c689a8]mjpeg: unsupported coding type (cf)
> [mjpeg @ 0xb6c689a8]invalid id 224
>
>
> That seems to indicate that there is something corrupted in the MJPEG
> bitstream.
>
> And finally sometimes the picture are completely mixed, look for example
> this one:
> http://simon.morlat.free.fr/pro5000bug.jpg
> The frontiers between image parts are constantly and quicly moving.
> I saw on the mailing list that I was not the only one having this problem.
>
> As I'm also suspecting a problem with my code, I tried with xawtv, but
> unfortunately it fails and display nothing (for other reasons):
>
> This is xawtv-3.95, running on Linux/i686 (2.6.18-fm)
> WARNING: Your X-Server has no DGA support.
> /dev/video0 [v4l2]: no overlay support
> v4l-conf had some trouble, trying to continue anyway
> Warning: Cannot convert string "-*-ledfixed-medium-r-*--39-*-*-*-c-*-*-*"
> to type FontStruct
> ioctl: VIDIOC_G_STD(std=0xbffd1744
> [PAL_G,PAL_D1,PAL_M,PAL_N,PAL_Nc,NTSC_M,SECAM_B,SECAM_G,SECAM_H,SECAM_K,SEC
>AM_K1,SECAM_L,?ATSC_8_VSB,ATSC_16_VSB,
> (null),(null),(null),(null),(null),(null)]): Argument invalide
> ioctl: VIDIOC_S_STD(std=0x0 []): Argument invalide
> ioctl: VIDIOC_DQBUF(index=0;type=VIDEO_CAPTURE;bytesused=0;flags=0x0
> [];field=ANY;;timecode.type=0;timecode.flags=0;timecode.frames=0;timecode.s
>econds=0;timecode.minutes=0;timecode.hours=0;timecode.userbits="";sequence=0
>;memory=unknown): Argument invalide
>
> Maybe you have other suggestion of a working v4lv2 compatible viewer ?
>
> I used the uvc driver from svn (updated yesterday), compiled for 2.6.18
> kernel.
> In dmesg, I have thoses messages:
> EOF in empty packet.
> EOF in empty packet.
> EOF in empty packet.
>
> I'm not sure they are related with uvc driver.
>
> Thanks for your help, tell me if you need more information.
>
> Simon
> _______________________________________________
> Linux-uvc-devel mailing list
> [email protected]
> https://lists.berlios.de/mailman/listinfo/linux-uvc-devel
Simon,
You can used luvcview available on my website :
http://mxhaard.free.fr/spca50x/Investigation/uvc/luvcview-20060920.tar.gz
feel free to ask me if you get problem :)
regards
--
Michel Xhaard
http://mxhaard.free.fr
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