PJPG Unable to find a compatible palette format.

Question

This is a phillips laptop usb camera with lamp, but not detected as pwc. motion -r432 can't get a palette, and no output occurs. kernel 2.6.27 64 bit

0] motion_startup: Motion trunk-r432 Started
[0] ffmpeg_init: ffmpeg LIBAVCODEC_BUILD 3352580 LIBAVFORMAT_BUILD 3345409
[0] main: Motion running in setup mode.
[0] main: Thread 1 is from /usr/local/etc/motion.conf
[1] motion_init: Thread 1 started
[1] v4l2_get_capability:
------------------------
cap.driver: "pac7311"
cap.card: "VGA Single Chip"
cap.bus_info: "0000:00:1d.7"
cap.capabilities=0x05000001
------------------------
[1] - VIDEO_CAPTURE
[1] - READWRITE
[1] - STREAMING
[1] v4l2_set_pix_format: Supported palettes:
[1] 0: PJPG (PJPG)
[1] v4l2_set_pix_format: Unable to find a compatible palette format.
[1] v4l_start: Failed with YUV420P, trying YUV422 palette: Input/output error
[1] v4l_start: Failed with YUV422, trying YUYV palette: Invalid argument
[1] v4l_start: Failed with YUYV, trying RGB24 palette: Invalid argument
[1] v4l_start: Failed with RGB24, tryingGREYSCALE palette: Invalid argument
[1] v4l_start: Failed with all supported palettes - giving up: Invalid argument
[1] motion_init: Could not fetch initial image from camera Motion continues using width and height from config file(s)
[1] image_ring_resize: Resizing pre_capture buffer to 1 items
[1] Changes:     0 - noise level: 21
[1] Changes:     0 - noise level: 21
[1] Changes:     0 - noise level: 16
[1] Changes:     0 - noise level: 16
[1] Changes:     0 - noise level: 13
[1] Changes:     0 - noise level: 13
[1] Changes:     0 - noise level: 12
[1] Changes:     0 - noise level: 12
[1] motion_loop: Retrying until successful connection with camera

Environment

Motion version:	-r432 snap
ffmpeg version
Libraries:	ffmpeg, mysql, postgresql
Server OS:	gentoo X64

-- JohnHuttley - 20 Oct 2008

Answer

Yah , still working on new patettes added in 2.6.27 specially those custom bayer and Pixart :

#define V4L2_PIX_FMT_PJPG     v4l2_fourcc('P', 'J', 'P', 'G') /* Pixart 73xx JPEG */

I'll commit to svn a fix .

-- AngelCarpintero - 21 Oct 2008

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Hi Angel,

I think it also needs to go in video.c u32 supported_formats[]

But it needs more than that. as it will then segfault.

--John

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John ,

i just wrote the new define nothing else ... there's no problem to add detection of that new palette , but also

conversion so i'm looking to add a support to 8 new palettes introduced in 2.6.27 . I'll to get something this weekend.

-- AngelCarpintero - 24 Oct 2008

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As a work around

http://www.lavrsen.dk/foswiki/bin/view/Motion/FrequentlyAskedQuestions#Problems_running_motion_with_ker

-- AngelCarpintero - 06 Aug 2009