USBVideo
From V4LWiki
Contents |
[edit] USB Video
see Em2820 for more information about how to write an usb video driver
[edit] What we need from you to get your USB Device work
[edit] Requested Devices
| Device | Status |
| Genius TVGO u202 | video/audio works (720x288 non interlaced half frames, Audio USB Audio) - no tuning yet |
| ALI Corp 1.3M Pixel USB 2.0 | Bad quality video yet |
| uli-m9205 | Only dvb-t support. |
| Aiptek USB DualCam | |
| Hauppauge | WinTV USB 2.0 -- AUDIO! |
| SIIG AVTuner Pro | with guidance, I might be able to get it working. Note that lsusb reports an em2821 but the em28xx driver doesn't recognize it. |
| MSI Mega Sky 580 | Both versions are supported. (0db0:5580/1 Micro Star International) |
| Club3D ZapTV-240M | ? (10fd:1513 Anubis Electronics, Ltd) Also known as MSI Digi Vox Mini II |
| ADS DVDxpressDX2 | ? (06e1:0709 ADS Technologies, Inc) |
| ADS VideoMPX USB | |
| Adaptec Gamebridge 1400 |
SSIG AVTuner Pro -- send an email to the v4l mailinglist or to a v4l developer, we can't help you unless we have any contact data.
Best thing would be to donate(prefered of course for the work :) or send your device to a developer for a few weeks
[edit] Working Devices
| Device | Status |
| Pinnacle PCTV USB 2.0 | supported (Need support for PAL-M) /* please follow the description on this site and mail the parsed output to mrechberger@gmail.com */ |
| Terratec Cinergy 250 USB 2.0 | supported |
| MSI Vox USB 2.0 | supported (res. <= 640x480) |
| Hauppauge WinTV USB 2.0 | supported, included in Linux kernel 2.6.18 |
Hercules smart TV USB 2.0 supported
[edit] Requirements
this site explains how to get empiatech devices or similar running with linux by applying changes which might only work with your device.
[edit] USBView output
We also need the linux usbview output of your device
[edit] Get usbsnoop for windows
The latest supported version is 1.8 you'll find it at the bottom of that website not ontop of it
- WinXP/Win2K
http://benoit.papillault.free.fr/usbsnoop/
http://benoit.papillault.free.fr/stats/get.php?location=../usbsnoop/sniff-bin-1.8.zip
if the link is down, you can also ask in IRC
- UPDATE*
there's a new version available for Vista:
[edit] Set up usbsnoop and start sniffing
Attach the sniffer to your device and start logging:
Finally start up your TV application again, everything will slow down after it's started but it's worth doing it that way hardware analyzers cost a few thousand dollars... please sniff about 200 - 300 MB! it will be easier for analyzing.
More information about the what you can do with that logfile can be found on the USBReplay projectsite
[edit] Log2Bin
There's a small script in my repository (http://linuxtv.org/hg/~mrechberger/v4l-dvb) called v4l_experimental/em2880/log2bin.pl. It is capable of parsing the usbsnoop.log logfile and extract the isoc data and print it in a binary format. I used it for analyzing a sniffed windows usbaudio stream.
Usage (for example): perl log2bin.pl < usbsnoop.log | aplay --format=S16_LE --rate=9600
(you might have to change the endpoint address in the perl script to get it work like that):
perl log2bin.pl < usbsnoop.log | mplayer -rawvideo on:yuy2:w=352:h=264 -
try various width and height values, you might also have to adjust the format (yuy2 in that case)
[edit] USB Replay
USB Replay supports replaying usbsnoop logfiles in linux using usbfs. Currently USB Control Messages and USB Bulk Messages are supported
