Webcam / motion

[ygator]

Is anyone doing anything with a webcam?

I'd like to have a webpage I can bring up that will show the video from a webcam that is connected.
I've tried many of the webcam packages, but most don't compile due to missing linux/videodev.h.

I am able to capture snapshots with fswebcam.

Thanks

[WarheadsSE]

device ?

[ygator]

USB SmileCam
USB ID 0ac8:301b Z-Star Microelectronics Corp. ZC0301 Webcam

I plug it in and get:
$this->bbcode_second_pass_quote('', 'u')sb 1-1.3.1.4: new full speed USB device number 37 using orion-ehci
input: zc3xx as /devices/platform/orion-ehci.0/usb1/1-1/1-1.3/1-1.3.1/1-1.3.1.4/input/input21

[kmihelich]

Packages that don't compile because of videodev.h missing is because they haven't updated to V4L2, which has the difference of using the videodev2.h that has been in place for the last few kernels. If they haven't caught up, chances are there is something else better out there.

[ygator]

I am trying out motion. Looks good, except for the colors are not coming out right.
So I went to compile it myself.
I did a configure which does show:
checking for linux/videodev.h... no
But when I type make I get
$this->bbcode_second_pass_code('', 'Generating dependencies, please wait...
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
motion.h:43:28: fatal error: linux/videodev.h: No such file or directory
compilation terminated.
make: *** [.depend] Error 1
')

So what did you guys do to make this into a package?

[kmihelich]

It was likely built pre-V4L2.

[ygator]

I am going to have to see if I can recompile it to do some debugging.
I tried it under Ubuntu and the colors were fine.
It looks like the colors are masked and they are not put over the right part of the image.

[ygator]

I downloaded the Daily Snapshot from the subversion trunk. It was unable to compile with ffmpeg support, because they have coded it specifically for the PC platform. I was able to uninstall ffmpeg and then do a configure and compile it since it now supports not having linux/videodev.h. However, I still have the problem with the colors. I've tried a second webcam and it does the same thing. However, both webcams only support the JPEG palette. So there might be a bug lurking inside.

Definately a bug. I just checked and the JPEG image from the camera is perfect.
It then makes a call to mjpegtoyuv420p and this makes a call to decode_jpeg_raw.

I have just checked the yuv image data coming out of decode_jpeg_raw.
It is wrong, so the bug is inside that function somewhere.

[pepedog]

/etc/motion/motion.conf
try
v4l2_palette 8

[ygator]

8 is the default, but looking at the output shows that it is switching to 3 JPEG, because that is the only one the cameras support.