英语水平好的帮一下忙(关于视频显示/抓取)
哪位英语不错,帮忙翻译一下下面的文字,主要是讲的是视频抓取方面的东东,我也
出现类似问题,我想看看他的详细解决方法,翻译出来对大家也许都有好处。
都怪自己英语水平太差,意思看的模模糊糊,还请各位指点迷津。
A few weeks ago I reported a mysterious problem with capture from a WinTV card: every few minutes, the card would silently drop a single field when capturing at 640x480 or similar.
As a result, the field order of the captured clip seemed to reverse periodically, wreaking havoc with things like inverse telecine etc. With this bug, the card was nearly unusable (definitely impractical) for full-resolution capture. Well ... problem solved!
I replaced the Hauppauge driver (latest VfW driver for Win2k from their Web site, w2kdrv311.exe) with the open source WDM driver for BT8xx cards (version 5.2.2), found here: http://btwincap.sourceforge.net
It works fine with VirtualDub under Win2k, despite its WDM nature. Regardless of what the author says, I did not need to recompile on Win2k. Also: I have a dual CPU system - the author went to great lengths to make the driver SMP-compatible, evidently with success.
Two minor issues:
1) the Hauppauge applications (WinTV, WinTV Radio) break. (WinTV never worked for me on Win2k anyhow ... "error initializing hardware")
2) You need a DirectShow capture program to get access to all the settings of the driver (e.g. to change the video standard from NTSC to PAL). The included capture program, AMCAP, does allow you to watch TV, listen to the radio, and to set up the driver.
It is quite buggy, though - I think it is little more than a M$ sample application from the SDK. Highly recommended!