The webcam is unusable due to this problem.
Bus 002 Device 014: ID 0ac8:307b Z-Star Microelectronics Corp. USB 1.1 Webcam
$ gst-launch-0.10 autovideosrc ! video/x-raw-yuv,framerate=\(fraction\)30/1,width=640,height=480 ! ffmpegcolorspace ! autovideosink vert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffec libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000fffb libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000fffd libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device libv4l2: error dequeuing buf: No such device ERROR: from element /GstPipeline:pipeline0/GstAutoVideoSrc:autovideosrc0/GstV4l2Src:autovideosrc0-actual-src-v4l: Failed trying to get video frames from device '/dev/video0'. Additional debug info: v4l2src_calls.c(194): gst_v4l2src_grab_frame (): /GstPipeline:pipeline0/GstAutoVideoSrc:autovideosrc0/GstV4l2Src:autovideosrc0-actual-src-v4l: Failed after 50 tries. device /dev/video0. system error: No such device Execution ended after 24358564033 ns. Setting pipeline to PAUSED ... Setting pipeline to READY ... Setting pipeline to NULL ... Freeing pipeline ...
The webcam is unusable due to this problem.
Bus 002 Device 014: ID 0ac8:307b Z-Star Microelectronics Corp. USB 1.1 Webcam
$ gst-launch-0.10 autovideosrc ! video/x- raw-yuv, framerate= \(fraction\ )30/1,width= 640,height= 480 ! ffmpegcolorspace ! autovideosink pipeline0/ GstAutoVideoSrc :autovideosrc0/ GstV4l2Src: autovideosrc0- actual- src-v4l: Failed trying to get video frames from device '/dev/video0'. calls.c( 194): gst_v4l2src_ grab_frame (): /GstPipeline: pipeline0/ GstAutoVideoSrc :autovideosrc0/ GstV4l2Src: autovideosrc0- actual- src-v4l:
vert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffec
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000fffb
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000fffd
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4lconvert: Error decompressing JPEG: unknown huffman code: 0000ffff
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
libv4l2: error dequeuing buf: No such device
ERROR: from element /GstPipeline:
Additional debug info:
v4l2src_
Failed after 50 tries. device /dev/video0. system error: No such device
Execution ended after 24358564033 ns.
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...