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TerraTec VideoSystem Grabster AV 350 MX (USB 2.0)

多媒体 TerraTec, 电视, USB

TerraTec VideoSystem Grabster AV 350 MX (USB 2.0)
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价格走势
TerraTec VideoSystem Grabster AV 350 MX 
-
Minimum: ¥ 0.00 
Maximum: ¥ 0.00  
更新: 06/08/2015 16:28

回顾Linux的兼容性

The TerraTec Grabster AV 350 MX allows video editing via USB 2.0 port. The external box has the USB ID 0ccd:0084

Bus 001 Device 002: ID 0ccd:0084 TerraTec Electronic GmbH

and is supported by the Linux kernel since version 2.6.31 (related kernel patch) via the kernel module em28xx.

Ubuntu 12.04, i.e. kernel 3.2, automatically initializes the AV 350 MX. If only the picture is transmitted but sound is missing, the kernel module was started with the wrong parameters. In this case a unloading and reloading with correct parameters enables the sound:

sudo rmmod em28xx
sudo modprobe em28xx card=67

The successfull loading of the kernel module is announced by the kernel in the following way:

usb 1-5: new high speed USB device using ehci_hcd and address 7
usb 1-5: New USB device found, idVendor=0ccd, idProduct=0084
usb 1-5: New USB device strings: Mfr=0, Product=1, SerialNumber=0
usb 1-5: Product: Grabster AV 350
usb 1-5: configuration #1 chosen from 1 choice
em28xx: New device Grabster AV 350 @ 480 Mbps (0ccd:0084, interface 0, class 0)
em28xx #0: chip ID is em2860
[...]
em28xx #0: AC97 audio (5 sample rates)
em28xx #0: 500mA max power
em28xx #0: Table at 0x04, strings=0x226a, 0x0000, 0x0000
em28xx #0: Identified as Terratec AV350 (card=68)
tvp5150 1-005c: chip found @ 0xb8 (em28xx #0)
em28xx #0: Config register raw data: 0x50
em28xx #0: AC97 vendor ID = 0xffffffff
em28xx #0: AC97 features = 0x6a90
em28xx #0: Empia 202 AC97 audio processor detected
tvp5150 1-005c: tvp5150am1 detected.
em28xx #0: v4l2 driver version 0.1.2
em28xx #0: V4L2 device registered as /dev/video1 and /dev/vbi0
tvp5150 1-005c: tvp5150am1 detected.

The video signal can be postprocessed by different choices of videograbbing programs, e.g. via mplayer:

mplayer tv:// -tv driver=v4l2:width=720:height=576:outfmt=uyvy:device=/dev/video0:\
input=0:fps=25:alsa:amode=1:forcechan=2:audiorate=48000:adevice=plughw.1,0:forceaudio:\
immediatemode=0 -ao sdl,alsa

and mencoder

mencoder tv:// -tv driver=v4l2:width=720:height=576:device=/dev/video0:\
input=0:fps=25:alsa:amode=1:forcechan=2:audiorate=48000:adevice=plughw.1,0:\
forceaudio:immediatemode=0 -oac copy -ovc copy -o myvideofile -endpos 00:01:00

Also mtvcgui can be used. It is an mplayer frontend specially created for video grabbing.


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