video capture card

基本解释

channel 1 in this context tells your video capture card to read from line in.
这里的 -channel 1 让视频捕捉卡从视频线读取数据。
I used a consumer-grade camcorder that sent its output to the video capture card using a composite (standard) video cable.
我使用一个家用摄像机，它使用复合（标准）视频线将输出发送到视频捕捉卡。
This article emphatically introduced the video capture technology implementation and the main function and the technical specification taking PC machine as hardware environment video capture card.
本文着重介绍了视频采集技术的实施，及以PC机为硬件环境的视频采集卡的主要功能和技术指标。
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The RackMac mini Xserver supports one half-length, x16 (x4 mode), PCIe 2.0 card to enable the use of professional video capture cards, 8Gb Fibre Channel cards, 10-Gigabit Ethernet cards, and RAID controller cards with a racked Mac mini all in 1U rack space.
ENGADGET: Sonnet announces RackMac mini Xserver, makes Apple desktop IT life seem more legit