Re: eb1a:2860 eMPIA em28xx device to usb1 ??? usb hub problem?
- Date: Tue, 23 Feb 2010 13:17:38 -0800
- From: Dean <red1@xxxxxxxxxxxxxxxx>
- Subject: Re: eb1a:2860 eMPIA em28xx device to usb1 ??? usb hub problem?
Devin Heitmueller wrote:
> On Tue, Feb 23, 2010 at 1:37 AM, Dean <red1@xxxxxxxxxxxxxxxx> wrote:
>> I have the KWorld DVB-T 305U, an em28xx device. Only the video works for me under Linux, no audio. In case anyone wants to see it, I have attached the full dmesg text, solely from this device.
> Hi Dean,
> How are you testing the audio, and under what video standard are you
> trying to use the device (NTSC/PAL/SECAM)?
I am receiving NTSC TV signals. I test with mplayer. Example;
mplayer tv://9 -tv driver=v4l2:alsa:immediatemode=0:adevice=hw.Em28xxAudio,0:norm=ntsc:chanlist=us-cable -vf pp=ci
The above command works fine (both audio and video) with my Hauppauge HVR-850, but for the Kworld 305U I must change 'immediatemode=0' to 'immediatemode=1' otherwise the video frame rate is about 1/2 normal speed and about 1 minute later mplayer starts printing 'video buffer full - dropping frame'.
According to dmesg the Kworld 305U loads the same firmware as my Hauppauge HVR-850, and (during separate test sessions) installs the same ALSA device;
card 1: Em28xxAudio [Em28xx Audio], device 0: Em28xx Audio [Empia 28xx Capture]
Subdevice #0: subdevice #0
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