Hi Alexey, Thanks for reply, Well i have already done this before even i saw that patches in mailing list... I am able to add /dev/video0 device on my machine but i am not able to read from that device. Here is the log:
uvcvideo 1-1.2:1.0: usb_probe_interface uvcvideo 1-1.2:1.0: usb_probe_interface - got id uvcvideo: Probing generic UVC device 1.2 uvcvideo: Videostreaming interface: 0x0A uvcvideo: Format 10, Desc Size: 7 uvcvideo: Found format MPEG2-TS. uvcvideo: Found a Status endpoint (addr 81). uvcvideo: Found UVC 1.00 device USB Camera Aoni (04a8:0536) uvcvideo: Added control 00000000-0000-0000-0000-000000000101/2 to device 1.2 entity 5 uvcvideo: Added control 00000000-0000-0000-0000-000000000101/3 to device 1.2 entity 5 uvcvideo: Added control 00000000-0000-0000-0000-000000000101/6 to device 1.2 entity 5 uvcvideo: Added control 00000000-0000-0000-0000-000000000101/7 to device 1.2 entity 5 uvcvideo: Added control 00000000-0000-0000-0000-000000000101/8 to device 1.2 entity 5 uvcvideo: Added control 00000000-0000-0000-0000-000000000101/5 to device 1.2 entity 5 uvcvideo: Scanning UVC chain: OT 3 <- PU 5 <- SU 4 <- IT 1 (-> XU 6)<6>uvcvideo: video stream id: 3 uvcvideo: Stream List id: 3, Dev stream id: 3 uvcvideo: Found a valid video chain (1 -> 3). uvcvideo: UVC non compliance - GET_DEF(PROBE) not supported. Enabling workaround. input: USB Camera Aoni as /class/input/input0 usb 1-1.2: link qh1024-0001/ff389200 start 1023 [1/0 us] uvcvideo: UVC device initialized. usb 1-1.2: adding 1-1.2:1.1 (config #1, interface 1) usb 1-1.2:1.1: uevent usb 1-1.2: adding 1-1.2:1.2 (config #1, interface 2) usb 1-1.2:1.2: uevent snd-usb-audio 1-1.2:1.2: usb_probe_interface snd-usb-audio 1-1.2:1.2: usb_probe_interface - got id usb 1-1.2: adding 1-1.2:1.3 (config #1, interface 3) usb 1-1.2:1.3: uevent uvcvideo: uvc_v4l2_open uvcvideo: uvc_v4l2_ioctl(VIDIOC_QUERYCAP) uvcvideo: uvc_v4l2_ioctl(VIDIOCGCAP) uvcvideo: Trying format 0x4745504d (MPEG): 10000x10000. uvcvideo: Default cam size: 10000x10000. uvcvideo: Using default frame interval 0.1 us (10000000.0 fps). uvcvideo: uvc_v4l2_release As per this conversation (http://lists.berlios.de/pipermail/linux-uvc-devel/2009-July/005008.html) it looks like there are lot more changes to be done, so that UVC is able to forward proper information to v4l2 layer. --Ajay ----- Original Message ----- From: "Alexey Fisher" <[email protected]> To: "Ajay Bhargav" <[email protected]> Cc: [email protected], "Kofi Jedamzik" <[email protected]> Sent: Thursday, June 16, 2011 12:06:02 PM Subject: Re: [Linux-uvc-devel] Webcam with H264 encoder not in Devicelist Hi, Stephan Lachowsky has provided some patches for MPEG-TS and H264 support. https://lists.berlios.de/pipermail/linux-uvc-devel/2011-February/006287.html https://lists.berlios.de/pipermail/linux-uvc-devel/2011-February/006288.html I do not know the current status of this work. May be Laurent can tell some thing about it. Am Donnerstag, den 16.06.2011, 10:26 +0530 schrieb Ajay Bhargav: > Hi, > > as far as i know stream based format are not yet supported in UVC > driver. and UVC 1.1 specifications defines the H.264 payload > specifications. I dont think they are implemented yet. > > I have a camera with me which outputs H.264 stream using MPEG2-TS > container format. If you have any idea how to add support for MPEG2-TS > please let me know. > > --Ajay > > ----- Original Message ----- > From: "Alexey Fisher" <[email protected]> > To: "Kofi Jedamzik" <[email protected]> > Cc: [email protected] > Sent: Wednesday, June 15, 2011 8:10:36 PM > Subject: Re: [Linux-uvc-devel] Webcam with H264 encoder not in > Devicelist > > Hi, > > theoretically this should do it: > gst-inspect-0.10 v4l2src ! video/x-h264 ! ffdec_h264 ! autovideosink > > but, if i'm correct, current kernel do not support h264. There was a > patch for some time, but im not sure if Laurent applyed it. > > Am Mittwoch, den 15.06.2011, 16:01 +0200 schrieb Kofi Jedamzik: > > Hi, > > > > ... there is a "new" Logitech Webcam called "B990 HD Webcam" with > > device id 046d:0828 > > it has an integrated hardware based H264 baseline video encoder > > > > This cam is not listed. > > > > MJPEG seems to work but I want to get out the H264 stream. > > > > Is there anyone who could give me a hint how to do it? > > > > Here are som dumps which might be helpful... > > > > best regards > > > > Kofi > > > > #lsusb --verbose -d 046d:0828 > > (big output) -->> http://pastebin.com/9WFgytwY > > > > #guvcview --device /dev/video0 --verbose > > (big output) -->> http://pastebin.com/pqmUGYyn > > > > #modinfo uvcvideo > > filename: > > /lib/modules/2.6.38-8-generic/kernel/drivers/media/video/uvc/uvcvideo.ko > > version: v1.0.0 > > > > #tail /var/log/syslog > > [11588.664940] usb 1-6: USB disconnect, address 4 > > [11594.580043] usb 1-6: new high speed USB device using ehci_hcd and > address 5 > > [11594.927759] uvcvideo: Unknown video format > > 34363248-0000-0010-8000-00aa00389b71 > > [11594.927786] uvcvideo: Found UVC 1.00 device <unnamed> (046d:0828) > > [11595.024093] input: UVC Camera (046d:0828) as > > /devices/pci0000:00/0000:00:12.2/usb1/1-6/1-6:1.0/input/input8 > -- > Regards, > Alexey > > _______________________________________________ > Linux-uvc-devel mailing list > [email protected] > https://lists.berlios.de/mailman/listinfo/linux-uvc-devel > > -- > This message has been scanned for viruses and > dangerous content by Clean Mail Gateway, and is > believed to be clean. > > ************************************************************************************************************************************************************* > > einfochips Business Disclaimer : This e-mail message and all > attachments transmitted with it are intended solely for the use of the > addressee and may contain legally privileged and confidential > information. 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