boblight-v4l can't read input about boblight HOT 6 OPEN

Some further Information:

On vlc i get the following output:

[0x7f1880000b28] main input debug: `v4l2:///dev/video0' gives access `v4l2' 
demux `' path `/dev/video0'
[0x7f1880000b28] main input debug: creating demux: access='v4l2' demux='' 
location='/dev/video0' file='/dev/video0'
[0x7f18780012d8] main demux debug: looking for access_demux module: 1 candidate
[0x7f18780012d8] v4l2 demux debug: opening device '/dev/video0'
[0x7f187c005718] lua art finder debug: Trying Lua playlist script 
/usr/lib/vlc/lua/meta/art/02_frenchtv.luac
[0x7f187c005718] lua art finder debug: Trying Lua playlist script 
/usr/lib/vlc/lua/meta/art/03_lastfm.luac
[0x7f187c005718] lua art finder debug: Trying Lua scripts in 
/usr/share/vlc/lua/meta/art
[0x7f187c005718] main art finder debug: no art finder module matching "any" 
could be loaded
[0x7f187c005718] main art finder debug: TIMER module_need() : 2.388 ms - Total 
2.388 ms / 1 intvls (Avg 2.388 ms)
[0x208fab8] main playlist debug: art not found for v4l2:///dev/video0
[0x7f18780012d8] v4l2 demux debug: trying kernel V4L2
[0x7f18780012d8] v4l2 demux debug: device EasyCAP DC60 using driver easycap 
(version 0.9.1) on usb-0000:00:1d.7-4.4
[0x7f18780012d8] v4l2 demux debug: the device has the capabilities: 0x05020001
[0x7f18780012d8] v4l2 demux debug:  (X) Video Capture, (X) Audio, ( ) Tuner, ( 
) Radio
[0x7f18780012d8] v4l2 demux debug:  (X) Read/Write, (X) Streaming, ( ) 
Asynchronous
[0x7f18780012d8] v4l2 demux debug: video input 0 (CVBS0) has type: External 
analog input *
[0x7f18780012d8] v4l2 demux debug: video input 1 (CVBS1) has type: External 
analog input  
[0x7f18780012d8] v4l2 demux debug: video input 2 (CVBS2) has type: External 
analog input  
[0x7f18780012d8] v4l2 demux debug: video input 3 (CVBS3) has type: External 
analog input  
[0x7f18780012d8] v4l2 demux debug: video input 4 (CVBS4) has type: External 
analog input  
[0x7f18780012d8] v4l2 demux debug: video input 5 (S-VIDEO) has type: External 
analog input  
[0x7f18780012d8] v4l2 demux debug: input set to 0
[0x7f18780012d8] v4l2 demux debug: device supports chroma UYVY [uyvy, UYVY]
[0x7f18780012d8] v4l2 demux debug: device supports chroma YUY2 [yuy2, YUYV]
[0x7f18780012d8] v4l2 demux debug: device supports chroma RV24 [rgb24, RGB3]
[0x7f18780012d8] v4l2 demux debug: device supports chroma RV32 [rgb32, RGB4]
[0x7f18780012d8] v4l2 demux debug: device supports chroma RV24 [bgr24, BGR3]
[0x7f18780012d8] v4l2 demux debug: device supports chroma RV32 [bgr32, BGR4]
[0x7f18780012d8] v4l2 demux debug: found default width and height of 320x240
[0x7f18780012d8] v4l2 demux debug: will try to find optimal width and height
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug: Found maximum framerate of 25.000000
[0x7f18780012d8] v4l2 demux debug:  discrete size 640x480 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:  discrete size 320x240 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:  discrete size 704x576 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:  discrete size 720x576 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug:  discrete size 360x288 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/25 supported
[0x7f18780012d8] v4l2 demux debug:   discrete frame interval 1/5 supported
[0x7f18780012d8] v4l2 demux debug: Found optimal dimensions for framerate 
25.000000 of 720x576
[0x7f18780012d8] v4l2 demux debug: Driver requires at most 829440 bytes to 
store a complete image
[0x7f18780012d8] v4l2 demux debug: Interlacing setting: progressive
[0x7f18780012d8] v4l2 demux debug: added new video es YUY2 720x576
[0x7f18780012d8] v4l2 demux debug:  frame rate: 25.000000
[0x7f1880000b28] main input debug: selecting program id=0
[0x7f18780012d8] main demux debug: using access_demux module "v4l2"
[0x7f18780012d8] main demux debug: TIMER module_need() : 1711.276 ms - Total 
1711.276 ms / 1 intvls (Avg 1711.276 ms)
[0x7f1878009958] main decoder debug: looking for decoder module: 30 candidates
[0x7f1878009958] main decoder debug: using decoder module "rawvideo"
[0x7f1878009958] main decoder debug: TIMER module_need() : 5.703 ms - Total 
5.703 ms / 1 intvls (Avg 5.703 ms)
[0x7f1878005cc8] main demux meta debug: looking for meta reader module: 2 
candidates
[0x7f1878005cc8] lua demux meta debug: Trying Lua scripts in 
/home/denis/.local/share/vlc/lua/meta/reader
[0x7f1878005cc8] lua demux meta debug: Trying Lua scripts in 
/usr/lib/vlc/lua/meta/reader
[0x7f1878005cc8] lua demux meta debug: Trying Lua playlist script 
/usr/lib/vlc/lua/meta/reader/filename.luac
[0x7f1878005cc8] lua demux meta debug: Trying Lua scripts in 
/usr/share/vlc/lua/meta/reader
[0x7f1878005cc8] main demux meta debug: no meta reader module matching "any" 
could be loaded
[0x7f1878005cc8] main demux meta debug: TIMER module_need() : 0.614 ms - Total 
0.614 ms / 1 intvls (Avg 0.614 ms)
[0x7f1880000b28] main input debug: `v4l2:///dev/video0' successfully opened


with boblight-v4l i get the following:

[video4linux2 @ 0x1402100] [4]Capabilities: 5020001
[video4linux2 @ 0x1402100] The V4L2 driver changed the video from 64x64 to 
320x240
[video4linux2 @ 0x1402100] The V4L2 driver set input_id: 0, input: CVBS0
[video4linux2 @ 0x1402100] Setting time per frame to 1/60
[video4linux2 @ 0x1402100] ioctl set time per frame(1/60) failed
[video4linux2 @ 0x1402100] ioctl(VIDIOC_DQBUF): Input/output error
[video4linux2 @ 0x1402100] decoding for stream 0 failed
[video4linux2 @ 0x1402100] Estimating duration from bitrate, this may be 
inaccurate
ERROR: Unable to find stream info


I think theres a problem with setting the correct video setting (the framerate 
etc.)

[video4linux2 @ 0x8c28d80] ioctl(VIDIOC_DQBUF): Invalid argument

I think that's the main problem.

ok, i did some testings on the weekend.
I found the bug. Its the fixed framerate for the /dev/videoX device in 
videograbber.cpp on line 71: m_formatparams.time_base.den = 60;

The Hardcoded fps of 60 of course doesn't work with every device as some 
devices only have 50i or 25p (for example when using something in a PAL 
environment instead of NTSC).
As soon as i removed the corresponding 2 lines (70+71) the v4l driver 
automatically detected the framerate and worked flawless. So i coded new flag 
for manually setting the framerate and detecting if a framerate was set and 
then use the corresponding one. If no framerate was set it'll try to auto 
detect it, which is basically what vlc does.

is there a way to include this into the main sourcecode?

any update on this?

thanks for your patch file, now my leds working good with usb grabber