when I make test with this, I have a green screen with Mplayer and message in terminal say error to compressing JPEG image...
dmesg give this [ 493.881607] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 493.881611] sn9c20x: Adding JPEG Header [ 493.881616] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00087612 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=645, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 493.881630] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.882337] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.882341] sn9c20x: VIDIOC_QBUF [ 493.882345] sn9c20x: Queuing buffer 1. [ 493.882348] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00087612 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=645, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 493.882361] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.897818] sn9c20x: AVGY Total: 0 (0) [ 493.897851] sn9c20x: v4l_sn9c20x_ioctl 11 [ 493.897856] sn9c20x: VIDIOC_DQBUF [ 493.897860] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 493.897863] sn9c20x: Adding JPEG Header [ 493.897869] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00103863 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=646, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 493.897883] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.898605] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.898610] sn9c20x: VIDIOC_QBUF [ 493.898613] sn9c20x: Queuing buffer 0. [ 493.898617] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00103863 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=646, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 493.898630] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.914067] sn9c20x: AVGY Total: 0 (0) [ 493.914098] sn9c20x: v4l_sn9c20x_ioctl 11 [ 493.914102] sn9c20x: VIDIOC_DQBUF [ 493.914106] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 493.914109] sn9c20x: Adding JPEG Header [ 493.914115] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00120112 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=647, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 493.914128] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.914839] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.914843] sn9c20x: VIDIOC_QBUF [ 493.914846] sn9c20x: Queuing buffer 1. [ 493.914850] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00120112 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=647, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 493.914863] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.931567] sn9c20x: AVGY Total: 0 (0) [ 493.931598] sn9c20x: v4l_sn9c20x_ioctl 11 [ 493.931603] sn9c20x: VIDIOC_DQBUF [ 493.931607] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 493.931610] sn9c20x: Adding JPEG Header [ 493.931615] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00137612 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=648, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 493.931629] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.932354] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.932359] sn9c20x: VIDIOC_QBUF [ 493.932362] sn9c20x: Queuing buffer 0. [ 493.932365] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00137612 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=648, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 493.932378] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.947817] sn9c20x: AVGY Total: 0 (0) [ 493.947848] sn9c20x: v4l_sn9c20x_ioctl 11 [ 493.947853] sn9c20x: VIDIOC_DQBUF [ 493.947857] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 493.947860] sn9c20x: Adding JPEG Header [ 493.947865] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00153862 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=649, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 493.947879] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.948596] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.948600] sn9c20x: VIDIOC_QBUF [ 493.948603] sn9c20x: Queuing buffer 1. [ 493.948606] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00153862 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=649, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 493.948619] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.964070] sn9c20x: AVGY Total: 0 (0) [ 493.964100] sn9c20x: v4l_sn9c20x_ioctl 11 [ 493.964105] sn9c20x: VIDIOC_DQBUF [ 493.964108] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 493.964112] sn9c20x: Adding JPEG Header [ 493.964117] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00170115 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=650, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 493.964130] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.964861] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.964865] sn9c20x: VIDIOC_QBUF [ 493.964869] sn9c20x: Queuing buffer 0. [ 493.964872] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00170115 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=650, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 493.964885] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.981568] sn9c20x: AVGY Total: 0 (0) [ 493.981602] sn9c20x: v4l_sn9c20x_ioctl 11 [ 493.981607] sn9c20x: VIDIOC_DQBUF [ 493.981611] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 493.981614] sn9c20x: Adding JPEG Header [ 493.981620] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00187614 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=651, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 493.981633] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.982357] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.982360] sn9c20x: VIDIOC_QBUF [ 493.982364] sn9c20x: Queuing buffer 1. [ 493.982367] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00187614 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=651, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 493.982380] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.997818] sn9c20x: AVGY Total: 0 (0) [ 493.997851] sn9c20x: v4l_sn9c20x_ioctl 11 [ 493.997855] sn9c20x: VIDIOC_DQBUF [ 493.997859] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 493.997863] sn9c20x: Adding JPEG Header [ 493.997868] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00203864 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=652, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 493.997882] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 493.998598] sn9c20x: v4l_sn9c20x_ioctl 0F [ 493.998602] sn9c20x: VIDIOC_QBUF [ 493.998605] sn9c20x: Queuing buffer 0. [ 493.998609] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00203864 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=652, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 493.998622] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.014068] sn9c20x: AVGY Total: 0 (0) [ 494.014099] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.014104] sn9c20x: VIDIOC_DQBUF [ 494.014107] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.014111] sn9c20x: Adding JPEG Header [ 494.014116] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00220112 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=653, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.014130] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.014838] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.014843] sn9c20x: VIDIOC_QBUF [ 494.014846] sn9c20x: Queuing buffer 1. [ 494.014849] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00220112 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=653, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.014862] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.030318] sn9c20x: AVGY Total: 0 (0) [ 494.030351] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.030356] sn9c20x: VIDIOC_DQBUF [ 494.030359] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.030363] sn9c20x: Adding JPEG Header [ 494.030368] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00236363 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=654, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.030382] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.031096] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.031100] sn9c20x: VIDIOC_QBUF [ 494.031103] sn9c20x: Queuing buffer 0. [ 494.031107] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00236363 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=654, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.031120] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.047818] sn9c20x: AVGY Total: 0 (0) [ 494.047849] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.047854] sn9c20x: VIDIOC_DQBUF [ 494.047857] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.047861] sn9c20x: Adding JPEG Header [ 494.047866] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00253862 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=655, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.047880] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.048607] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.048611] sn9c20x: VIDIOC_QBUF [ 494.048614] sn9c20x: Queuing buffer 1. [ 494.048618] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00253862 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=655, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.048631] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.064068] sn9c20x: AVGY Total: 0 (0) [ 494.064099] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.064104] sn9c20x: VIDIOC_DQBUF [ 494.064108] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.064111] sn9c20x: Adding JPEG Header [ 494.064117] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00270113 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=656, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.064130] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.064860] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.064865] sn9c20x: VIDIOC_QBUF [ 494.064868] sn9c20x: Queuing buffer 0. [ 494.064872] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00270113 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=656, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.064885] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.080320] sn9c20x: AVGY Total: 0 (0) [ 494.080349] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.080354] sn9c20x: VIDIOC_DQBUF [ 494.080358] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.080361] sn9c20x: Adding JPEG Header [ 494.080366] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00286364 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=657, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.080381] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.081091] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.081094] sn9c20x: VIDIOC_QBUF [ 494.081097] sn9c20x: Queuing buffer 1. [ 494.081101] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00286364 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=657, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.081113] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.097816] sn9c20x: AVGY Total: 0 (0) [ 494.097839] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.097842] sn9c20x: VIDIOC_DQBUF [ 494.097845] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.097847] sn9c20x: Adding JPEG Header [ 494.097850] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00303858 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=658, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.097858] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.098264] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.098267] sn9c20x: VIDIOC_QBUF [ 494.098269] sn9c20x: Queuing buffer 0. [ 494.098271] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00303858 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=658, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.098284] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.114069] sn9c20x: AVGY Total: 0 (0) [ 494.114101] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.114107] sn9c20x: VIDIOC_DQBUF [ 494.114110] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.114114] sn9c20x: Adding JPEG Header [ 494.114119] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00320114 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=659, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.114133] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.114578] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.114580] sn9c20x: VIDIOC_QBUF [ 494.114582] sn9c20x: Queuing buffer 1. [ 494.114584] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00320114 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=659, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.114591] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.130316] sn9c20x: AVGY Total: 0 (0) [ 494.130338] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.130342] sn9c20x: VIDIOC_DQBUF [ 494.130344] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.130346] sn9c20x: Adding JPEG Header [ 494.130349] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00336358 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=660, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.130357] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.130766] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.130769] sn9c20x: VIDIOC_QBUF [ 494.130771] sn9c20x: Queuing buffer 0. [ 494.130773] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00336358 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=660, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.130780] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.147819] sn9c20x: AVGY Total: 0 (0) [ 494.147853] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.147858] sn9c20x: VIDIOC_DQBUF [ 494.147862] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.147865] sn9c20x: Adding JPEG Header [ 494.147870] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00353865 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=661, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.147884] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.148338] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.148340] sn9c20x: VIDIOC_QBUF [ 494.148342] sn9c20x: Queuing buffer 1. [ 494.148344] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00353865 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=661, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.148351] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.164069] sn9c20x: AVGY Total: 0 (0) [ 494.164105] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.164110] sn9c20x: VIDIOC_DQBUF [ 494.164114] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.164117] sn9c20x: Adding JPEG Header [ 494.164122] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00370115 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=662, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.164136] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.164582] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.164584] sn9c20x: VIDIOC_QBUF [ 494.164586] sn9c20x: Queuing buffer 0. [ 494.164588] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00370115 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=662, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.164594] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.180320] sn9c20x: AVGY Total: 0 (0) [ 494.180352] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.180357] sn9c20x: VIDIOC_DQBUF [ 494.180360] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.180364] sn9c20x: Adding JPEG Header [ 494.180369] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00386365 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=663, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.180383] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.181097] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.181101] sn9c20x: VIDIOC_QBUF [ 494.181104] sn9c20x: Queuing buffer 1. [ 494.181108] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00386365 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=663, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.181121] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.197818] sn9c20x: AVGY Total: 0 (0) [ 494.197852] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.197857] sn9c20x: VIDIOC_DQBUF [ 494.197861] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.197864] sn9c20x: Adding JPEG Header [ 494.197869] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00403863 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=664, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.197883] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.198598] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.198603] sn9c20x: VIDIOC_QBUF [ 494.198606] sn9c20x: Queuing buffer 0. [ 494.198610] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00403863 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=664, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.198623] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.214070] sn9c20x: AVGY Total: 0 (0) [ 494.214106] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.214111] sn9c20x: VIDIOC_DQBUF [ 494.214115] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.214118] sn9c20x: Adding JPEG Header [ 494.214124] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00420115 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=665, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.214137] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.214870] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.214875] sn9c20x: VIDIOC_QBUF [ 494.214879] sn9c20x: Queuing buffer 1. [ 494.214883] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00420115 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=665, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.214896] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.230319] sn9c20x: AVGY Total: 0 (0) [ 494.230350] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.230355] sn9c20x: VIDIOC_DQBUF [ 494.230359] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.230363] sn9c20x: Adding JPEG Header [ 494.230368] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00436364 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=666, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.230381] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.231102] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.231106] sn9c20x: VIDIOC_QBUF [ 494.231109] sn9c20x: Queuing buffer 0. [ 494.231112] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00436364 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=666, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.231125] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.247822] sn9c20x: AVGY Total: 0 (0) [ 494.247854] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.247859] sn9c20x: VIDIOC_DQBUF [ 494.247863] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.247866] sn9c20x: Adding JPEG Header [ 494.247872] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00453867 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=667, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.247885] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.248618] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.248621] sn9c20x: VIDIOC_QBUF [ 494.248625] sn9c20x: Queuing buffer 1. [ 494.248628] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00453867 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=667, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.248640] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.264069] sn9c20x: AVGY Total: 0 (0) [ 494.264097] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.264102] sn9c20x: VIDIOC_DQBUF [ 494.264106] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.264110] sn9c20x: Adding JPEG Header [ 494.264115] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00470113 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=668, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.264129] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.264842] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.264846] sn9c20x: VIDIOC_QBUF [ 494.264849] sn9c20x: Queuing buffer 0. [ 494.264853] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00470113 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=668, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.264866] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.280321] sn9c20x: AVGY Total: 0 (0) [ 494.280350] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.280355] sn9c20x: VIDIOC_DQBUF [ 494.280359] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.280362] sn9c20x: Adding JPEG Header [ 494.280368] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00486365 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=669, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.280381] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.281090] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.281094] sn9c20x: VIDIOC_QBUF [ 494.281097] sn9c20x: Queuing buffer 1. [ 494.281100] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00486365 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=669, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.281113] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.297818] sn9c20x: AVGY Total: 0 (0) [ 494.297849] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.297854] sn9c20x: VIDIOC_DQBUF [ 494.297858] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.297862] sn9c20x: Adding JPEG Header [ 494.297867] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00503864 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=670, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.297880] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.298603] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.298609] sn9c20x: VIDIOC_QBUF [ 494.298612] sn9c20x: Queuing buffer 0. [ 494.298616] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00503864 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=670, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.298629] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.314069] sn9c20x: AVGY Total: 0 (0) [ 494.314100] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.314105] sn9c20x: VIDIOC_DQBUF [ 494.314109] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.314112] sn9c20x: Adding JPEG Header [ 494.314118] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00520114 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=671, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.314131] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.314852] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.314856] sn9c20x: VIDIOC_QBUF [ 494.314859] sn9c20x: Queuing buffer 1. [ 494.314863] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00520114 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=671, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.314876] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.330320] sn9c20x: AVGY Total: 0 (0) [ 494.330349] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.330354] sn9c20x: VIDIOC_DQBUF [ 494.330358] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.330361] sn9c20x: Adding JPEG Header [ 494.330367] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00536365 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=672, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.330380] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.331098] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.331101] sn9c20x: VIDIOC_QBUF [ 494.331105] sn9c20x: Queuing buffer 0. [ 494.331108] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00536365 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=672, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.331121] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.347820] sn9c20x: AVGY Total: 0 (0) [ 494.347855] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.347860] sn9c20x: VIDIOC_DQBUF [ 494.347864] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.347867] sn9c20x: Adding JPEG Header [ 494.347872] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00553866 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=673, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.347886] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.348627] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.348632] sn9c20x: VIDIOC_QBUF [ 494.348635] sn9c20x: Queuing buffer 1. [ 494.348639] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00553866 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=673, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.348652] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.364070] sn9c20x: AVGY Total: 0 (0) [ 494.364099] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.364104] sn9c20x: VIDIOC_DQBUF [ 494.364108] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.364112] sn9c20x: Adding JPEG Header [ 494.364117] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00570114 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=674, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.364130] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.364858] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.364863] sn9c20x: VIDIOC_QBUF [ 494.364866] sn9c20x: Queuing buffer 0. [ 494.364870] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00570114 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=674, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.364883] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.380321] sn9c20x: AVGY Total: 0 (0) [ 494.380355] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.380360] sn9c20x: VIDIOC_DQBUF [ 494.380363] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.380367] sn9c20x: Adding JPEG Header [ 494.380372] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00586370 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=675, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.380386] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.381099] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.381103] sn9c20x: VIDIOC_QBUF [ 494.381106] sn9c20x: Queuing buffer 1. [ 494.381109] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00586370 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=675, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.381122] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.397820] sn9c20x: AVGY Total: 0 (0) [ 494.397853] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.397858] sn9c20x: VIDIOC_DQBUF [ 494.397862] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.397865] sn9c20x: Adding JPEG Header [ 494.397870] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00603864 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=676, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.397883] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.398595] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.398599] sn9c20x: VIDIOC_QBUF [ 494.398602] sn9c20x: Queuing buffer 0. [ 494.398605] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00603864 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=676, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.398617] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.414070] sn9c20x: AVGY Total: 0 (0) [ 494.414102] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.414107] sn9c20x: VIDIOC_DQBUF [ 494.414111] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.414114] sn9c20x: Adding JPEG Header [ 494.414119] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00620115 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=677, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.414133] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.414580] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.414582] sn9c20x: VIDIOC_QBUF [ 494.414584] sn9c20x: Queuing buffer 1. [ 494.414586] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00620115 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=677, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.414593] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.430319] sn9c20x: AVGY Total: 0 (0) [ 494.430342] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.430345] sn9c20x: VIDIOC_DQBUF [ 494.430348] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.430349] sn9c20x: Adding JPEG Header [ 494.430353] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00636361 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=678, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.430361] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.430780] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.430783] sn9c20x: VIDIOC_QBUF [ 494.430785] sn9c20x: Queuing buffer 0. [ 494.430787] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00636361 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=678, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.430794] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.447820] sn9c20x: AVGY Total: 0 (0) [ 494.447854] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.447859] sn9c20x: VIDIOC_DQBUF [ 494.447863] sn9c20x: Dequeuing buffer 1 (3, 40 bytes). [ 494.447866] sn9c20x: Adding JPEG Header [ 494.447871] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00653865 index=1, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=679, memory=mmap, offset/ userptr=0x00096000, length=614400 [ 494.447885] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.448340] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.448343] sn9c20x: VIDIOC_QBUF [ 494.448344] sn9c20x: Queuing buffer 1. [ 494.448346] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00653865 index=1, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=679, memory=mmap, offset/ userptr=0xabcdef01, length=16777216 [ 494.448353] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.464071] sn9c20x: AVGY Total: 0 (0) [ 494.464105] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.464110] sn9c20x: VIDIOC_DQBUF [ 494.464113] sn9c20x: Dequeuing buffer 0 (3, 40 bytes). [ 494.464117] sn9c20x: Adding JPEG Header [ 494.464122] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF 342161:08:54.00670117 index=0, type=vid-cap, bytesused=629, flags=0x00000001, field=1, sequence=680, memory=mmap, offset/ userptr=0x00000000, length=614400 [ 494.464136] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.464576] sn9c20x: v4l_sn9c20x_ioctl 0F [ 494.464578] sn9c20x: VIDIOC_QBUF [ 494.464580] sn9c20x: Queuing buffer 0. [ 494.464582] SN9C20x USB 2.0 Webcam Driver: VIDIOC_QBUF 342161:08:54.00670117 index=0, type=vid-cap, bytesused=460800, flags=0x00000001, field=1, sequence=680, memory=mmap, offset/ userptr=0xabcdef00, length=16777216 [ 494.464589] SN9C20x USB 2.0 Webcam Driver: timecode=00:00:00 type=0, flags=0x00000000, frames=0, userbits=0x00000000 [ 494.464651] sn9c20x: v4l_sn9c20x_ioctl 13 [ 494.464654] SN9C20x USB 2.0 Webcam Driver: VIDIOC_STREAMOFF type=vid-cap [ 494.464658] sn9c20x: VIDIOC_STREAMOFF [ 494.465443] sn9c20x: Isoc cleanup [ 494.847995] sn9c20x: v4l_sn9c20x_ioctl 11 [ 494.848016] sn9c20x: VIDIOC_DQBUF [ 494.848021] sn9c20x: [E] Empty buffer queue. [ 494.848027] SN9C20x USB 2.0 Webcam Driver: VIDIOC_DQBUF error -22 [ 494.861380] sn9c20x: Isoc cleanup [ 494.861395] sn9c20x: Freeing 2 v4l2 buffers On 11 jan, 19:14, "Brian Johnson" <[email protected]> wrote: > The green/black screen usually indicates that the driver is failing to > get video frames coming back. can you try what i suggested in my > previous post and insert your driver module using insmod sn9c20x.ko > log_level=15, then start and stop mplayer and post your dmesg output? > > On Sun, Jan 11, 2009 at 12:48 PM, MBOOMA <[email protected]> wrote: > > > I make test with mplayer using this > > > $ LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so mplayer tv:// \ > > -tv driver=v4l2:width=640:height=480:fps=25:device=/dev/video0 -vo > > x11 > > > I have juste a green screen > > > I make test with skype using this > > > $ LD_PRELOAD=/usr/lib/libv4l/v4l2convert.so skype > > > I se a black image with some green color when I move.. --~--~---------~--~----~------------~-------~--~----~ Lets make microdia webcams plug'n play, (currently plug'n pray) To post to this group, send email to [email protected] Visit us online https://groups.google.com/group/microdia -~----------~----~----~----~------~----~------~--~---
