Archived talk:Em2820

From LinuxTVWiki
Revision as of 01:47, 16 November 2005 by MarkusRechberger (talk | contribs) (→‎Can't tune any channel)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Does anyone have an idea getting the sound of pinnacle usb2 working? the image quality is surpringly brilliant, but... my system: suse 10.0, v4l-kernel from cvs (updatet some two days ago...). soundcard:82801FB/FBM/FR/FW/FRW (ICH6 Family) AC'97 Audio Controller, driver: snd-intel8x0. Input:PAL I tryed all the things:

                        -activating everything in kmix (also for the pctv usb2-device)
                        -switched the kde sound-system to alsa
                        -using different players: kdetv, Xawtv, tvtime

1. v4lctl -c /dev/video0 list gives me: "Mute: on" - is that the problem? I could not change this typing v4lctl -c /dev/video0 mute=off. 2. do I have to run some special things in background? 3. I couldn't update dvb-kernel from cvs - is this perhaps causing problem?


please read the Em2820 Wiki documentation, you have to use sox (or something similar) for piping the audio stream from the usb pctv device to your soundcard. -- MarkusRechberger

help on starting

Hi!

I have a Pinnacle PCTV USB2 and I'd like to try it out on Linux.

I read the wiki about this device been supported and I need some help on installing it.

Where can I download the package?

After download the package, do I need just to compile it or it is a patch to be applied on my kernel source or v4l source?


Thanks for the help,

Renato


just get the v4l-kernel from cvs and compile it:

$ cvs -d :pserver:anonymous@cvs.linuxtv.org:/cvs/video4linux login
$ cvs -d :pserver:anonymous@cvs.linuxtv.org:/cvs/video4linux co -P v4l-kernel
$ cd v4l-kernel
$ cd v4l
$ make
...
...
$ make install
$ modprobe em28xx

you will also need the kernel headers for doing all that

MarkusRechberger

ioctl VIDIOCGAUDIO: Invalid argument

Hi,

I have a msi vox usb 2.0 tv tuner, i downloaded v4l from cvs and the compiler worked fine. When i modprobe em28xx my usb tv card its recognized and seted up. But when i run xawtv, aatv, tvtime, or whatever ... i get ioctl VIDIOCGAUDIO: Invalid argument and i cant see anything. My running kernel is 2.6.14-1, debian sarge distro.

v4l-info show the same thing, ioctl VIDIOCGAUDIO: Invalid argument and in the other line i get: ioctl VIDIOCGFBUF: Invalid argument

If anybody know what else can i do, i would appreciate it ...

cheers, Nitam.


Hi Nitam,

The MSI Vox isn't completly supported at the moment, I'll try to fix it during the next few days (only problem is I don't have that device and because of that I have to wait for others to test it)


Well, i can help you with that if you want, let me know if you need my email/msn/icq or whatever and i'll test your fix/updates.

regards, Nitam.

ps: email eskali@gmail.com

Can't tune any channel

First I'd like to thank you for allowing us to use our USB capture device on Linux.

I've downloaded the latest CVS of video4linux following the instructions you gave me.

My device is a Pinnacle PCTV USB2.

I'm having problems when I try to use the tuner, I just can't find any channel.

If I try:


mplayer -tv device=/dev/video0:amode=0:input=0:norm=3:driver=v4l2:outfmt=yuy2:channels=16-16,24-24,51-51 tv://


I got only static from the three channels above (note that if I try the same channels on Windows they tune ok). Looking at the output from mplayer I see this:


Couldn't find frequency for channel 16 (16) Selected channel: 16 - 16 (freq: 0.000)


So I figure out that it was because of the frequency. I tried a lot of params like freq=483250 (frequency from channel 16 reported by Pinnacle Windows app) but still didn't work.

Anyone have any ideia where is the problem?

By the way, I'm in Brazil... here we use PAL-M and I'm trying to tune from antenna, not cable.

PS: I have tried others apps like xawtv, kdetv, zapping, etc... and the same happens with them.


Thanks a lot!!

Renato


Hi Renato,

could you try:

mplayer -tv device=/dev/video0:amode=0:input=0:norm=PAL:driver=v4l2:outfmt=yuy2 tv://

norm=PAL or NTSC

use H or K/L for tuning the channels

Markus


Markus,

Thanks again for helping.

I tried the command you gave me (PAL and NTSC) but I couldn't tune any channel.


On my Windows app, I have an option to select if the source from tuner is from Cable or Antenna. To be allowed to tune the channels on Windows I have to select "Antenna". If I select Cable I have the same problem that I'm having on Linux. Do you think the problem could be this?

I have tried some parameters for the module tuner but still no lucky, I'm trying:

modprobe tuner pal=1 tv_antenna=1


Thanks again!



mplayer -tv device=/dev/video0:amode=0:input=0:norm=PAL:driver=v4l2:outfmt=yuy2 tv://

also try different input values,

please provide what dmesg and lsmod shows up after plugging in the device

you normally don't have to touch any tuner settings.

Markus