Hi,
I tried to run usb webcam on beaglebone black with "gst-launch-1.0 -e v4l2src ! video/x-raw-yuv,width=640,height=480,framerate=15/1 ! ffmpegcolorspace ! fbdevsink device=/dev/fb0" but it doesnt work. Could you please help me to find any?
Not: I use ti-sitara-sdk rootfs and kernel but there is only "JPEG" format is allowed how can I recompile sdk v4l2 libraries?
root@am335x-evm:/# v4l2-ctl --list-devices
PC Camera (usb-musb-hdrc.1.auto-1.2):
/dev/video0
root@am335x-evm:/# v4l2-ctl --list-formats
ioctl: VIDIOC_ENUM_FMT
Index : 0
Type : Video Capture
Pixel Format: 'JPEG' (compressed)
Name : JPEG
root@am335x-evm:/# v4l2-ctl -D
Driver Info (not using libv4l2):
Driver name : gspca_zc3xx
Card type : PC Camera
Bus info : usb-musb-hdrc.1.auto-1.2
Driver version: 4.1.6
Capabilities : 0x85200001
Video Capture
Read/Write
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x05200001
Video Capture
Read/Write
Streaming
Extended Pix Format
root@am335x-evm:/# v4l2-ctl -L
User Controls
brightness (int) : min=0 max=255 step=1 default=128 value=128 flags=slider
contrast (int) : min=0 max=255 step=1 default=128 value=128 flags=slider
gamma (int) : min=1 max=6 step=1 default=4 value=4 flags=slider
gain_automatic (bool) : default=1 value=1
power_line_frequency (menu) : min=0 max=2 default=0 value=0
0: Disabled
1: 50 Hz
2: 60 Hz
sharpness (int) : min=0 max=3 step=1 default=2 value=2 flags=slider
JPEG Compression Controls
compression_quality (int) : min=50 max=87 step=1 default=75 value=75
brightness (int) : min=0 max=255 step=1 default=128 value=128 flags=slider
contrast (int) : min=0 max=255 step=1 default=128 value=128 flags=slider
gamma (int) : min=1 max=6 step=1 default=4 value=4 flags=slider
gain_automatic (bool) : default=1 value=1
power_line_frequency (menu) : min=0 max=2 default=0 value=0
0: Disabled
1: 50 Hz
2: 60 Hz
sharpness (int) : min=0 max=3 step=1 default=2 value=2 flags=slider
root@am335x-evm:/# v4l2-ctl --all > /tmp.log
root@am335x-evm:/# more /tmp.log
Driver Info (not using libv4l2):
Driver name : gspca_zc3xx
Card type : PC Camera
Bus info : usb-musb-hdrc.1.auto-1.2
Driver version: 4.1.6
Capabilities : 0x85200001
Video Capture
Read/Write
Streaming
Extended Pix Format
Device Capabilities
Device Caps : 0x05200001
Video Capture
Read/Write
Streaming
Extended Pix Format
Priority: 2
Video input : 0 (gspca_zc3xx: ok)
Format Video Capture:
Width/Height : 640/480
Pixel Format : 'JPEG'
Field : None
Bytes per Line: 640
Size Image : 115790
Colorspace : JPEG (JFIF/ITU601)
Flags :
JPEG compression:
Quality: 75
Markers: 0x00000018
Define Huffman Tables
Define Quantization Tables
Streaming Parameters Video Capture:
Frames per second: invalid (0/0)
Read buffers : 2
User Controls
e=128 flags=slider ess (int) : min=0 max=255 step=1 default=128 valu--More-- (46% of 1957 bytes)
e=128 flags=slider ast (int) : min=0 max=255 step=1 default=128 valu--More-- (52% of 1957 bytes)
flags=slider mma (int) : min=1 max=6 step=1 default=4 value=4 --More-- (57% of 1957 bytes)
gain_automatic (bool) : default=1 value=1
power_line_frequency (menu) : min=0 max=2 default=0 value=0
flags=slider ess (int) : min=0 max=3 step=1 default=2 value=2 --More-- (69% of 1957 bytes)
JPEG Compression Controls
=75 ity (int) : min=50 max=87 step=1 default=75 value--More-- (75% of 1957 bytes)
e=128 flags=slider ess (int) : min=0 max=255 step=1 default=128 valu--More-- (80% of 1957 bytes)
e=128 flags=slider ast (int) : min=0 max=255 step=1 default=128 valu--More-- (85% of 1957 bytes)
flags=slider mma (int) : min=1 max=6 step=1 default=4 value=4 --More-- (90% of 1957 bytes)
gain_automatic (bool) : default=1 value=1
power_line_frequency (menu) : min=0 max=2 default=0 value=0
flags=slider ss (int) : min=0 max=3 step=1 default=2 value=2 --More-- (102% of 1957 bytes)
root@am335x-evm:/dev# uname -a
Linux am335x-evm 4.1.6-g52c4aa7 #1 PREEMPT Wed Oct 7 14:38:18 EDT 2015 armv7l GNU/Linux
Best Regards,
Ümit.
