capturing video with Avermedia a827 usb hybrid TV

linux
1

hello.
I just got one Avermedia AverTV Hybrid Volar HX A827 Usb card
http://www.avermedia.com/avertv/Product-…-spx?Id=293
with great official linux drivers
http://www.avermedia.com/avertv/Product-…-b=APDriver
so I install it and work perfectly, I can see the tv using Kaffeine for example.
I am using ubuntu 9.04 by the way.
I have the device listed in /dev/video1
and the dmesg when I plug it is:
[ 4232.850911] usb 1-3: USB disconnect, address 2
[ 4372.424079] usb 1-3: new high speed USB device using ehci_hcd and address 4
[ 4373.109674] usb 1-3: configuration #1 chosen from 1 choice
[ 4373.455420] A827 registered V4L2 device video1[video]
[ 4373.455456] A827 registered V4L2 device vbi2[vbi]
[ 4373.455486] A827 registered V4L2 device radio3[radio]
[ 4373.455835] A827 registered ALSA sound card 1
[ 4373.455844] DVB: registering new adapter (A827[0] DVB-T)
[ 4373.455847] A827[0] DVB-T registered DVB adapter 0
[ 4373.457303] DVB: registering adapter 0 frontend 0 (A827[0] DVB-T)…

When I run the movieGrabberexample with 720x576 and ofSetLogLevel(OF_LOG_VERBOSE) activate I got this output:
enumerate: 8000000
Total count method 1: 1
Total count method 2: 0
OF_NOTICE: ofUCUtils: Using device /dev/video1
OF_NOTICE: ofUCUtils: Using module v4l2
OF_NOTICE: choosing device 0: AVerMedia A827 USB (USB)
OF_NOTICE: ofUCUtils : Available formats for this device:
OF_NOTICE: ofUCUtils : 0: 4:2:2, packed, YUYV ( YUYV ), min size: 720x576, max size:720x576, default size: 640x480
OF_VERBOSE: ofUCUtils: available sizes for this format:
OF_VERBOSE: 720x576
OF_NOTICE: ofUCUtils : 1: 4:2:2, packed, UYVY ( UYVY ), min size: 720x576, max size:720x576, default size: 640x480
OF_VERBOSE: ofUCUtils: available sizes for this format:
OF_VERBOSE: 720x576
OF_NOTICE: ofUCUtils : Selected format: 4:2:2, packed, YUYV ( YUYV ), with size 720x576

OF_NOTICE: ofUCUtils: Converting to RGB24 (720,576)

the problem is that I can only see a back screen… not image.

I would like to see a tv channel inside my OF application and also the video from the analogue input. Do anyone have an idea of how to configure it?

regards
diego diaz

2

hey diego

can you try if it works in ucview?

3

hi arturo
yes it works now!!! thanks

what I did is install the ucview and select adjustments/source/compotite. so I can see inside ucview my rca video input image. I close the ucview and the configuration is been saved because I open the OF and I can see the video imagen inside my programme.

the direct tv is still black I think because I have to select the tv channel to get the image…
I will look later how I can do it.

thanks again diego

4

hi all

i just know how to control the input source of the avermedia USB stick.

I have to include
#include <sys/ioctl.h>
#include <linux/videodev.h>

and I add this lines in
void testApp::setup(){
v4l2_std_id VDOStd[]={V4L2_STD_PAL_B, V4L2_STD_NTSC_M, V4L2_STD_PAL_D, V4L2_STD_PAL_I};
char Std[][10]={{“PAL B”},{“NTSC M”},{“PAL D”},{“PAL I”}};

int fd=0,i;
int input=1;
printf(“Please wait about 10 seconds for device init.\n\n”);
fd = open("/dev/video0", O_RDWR);
if(fd < 0) {
printf(“Fatal Error!! There is no /dev/video0 exists.\n”);
}
printf(“Set Input\t: Composite\n”);
ioctl(fd, VIDIOC_S_INPUT, &input); // set input
printf(“Set Standard\t: %s\n”,Std[0]);
ioctl(fd, VIDIOC_S_STD, &VDOStd[0]); // set standard

but now I have a rare linux problem…
the Ucview doesnt detect my usb card if it is name with /dev/video0
it only works if I plug another camera before and avermedia got /dev/video1
does anybody now way? any suggestion?

thanks
diego

5

I have an idea about the problem
I think is a file permission:
here was not working
crw-rw---- 1 root video 81, 1 2009-06-22 18:31 /dev/video0
and here is working
crw-rw----+ 1 root video 81, 0 2009-06-22 18:31 /dev/video0

but how to change it automatically?

6

hi
I found the solution
I add permission to the user for run web cam
administration/Users Settings->user privileges
I select the
Capture video from TV or Webcams, and use 3d acceleration

just in case somebody have the same problem