Introduction
Virtual VCR is a DirectShow video capture application that allows
you to capture Audio and Video to your hard drive in the AVI file
format.
Features Summary
- Arbitrary resolution settings (480x576 etc).
- Compression codec selection and setup (Video and Audio)
- Smart Tee Preview for capturing and previewing at full resolutions
- Pre Filtering allows use of installed DirectShow filters
[more]
- Video crop before capture
- Can be used with a Scheduler to capture at preset times [more]
- Command line options for use in BAT files etc
- Real-time Capture stats including compression ratio, bytes
sec etc
- Small, Fast and Free
Requirements
Virtual VCR requires DirectX 8.1 you can download and install
DirectX 8.1 from Microsoft
before using Virtual VCR.
You will also need a video capture card or device that Virtual
VCR can use to capture with. WDM drivers
work best with Virtual VCR, VFW
drivers may work but will more than likely have problems.
Recommendations
Virtual VCR works best with a video compression codec to
compress the video as it is captured, it is recommended that you
use a MJPEG coded as these types of codes are very fast and usually
give very good results. One of the fastest MJPEG codec's is one
by Pegasus Imaging, you can find out more about their MJPEG codec
at the following web site:
http://www.pegasusimaging.com/picvideomjpeg.htm
Another alternative is a free video compression codec by the
name of Huffyuv, this coded is free and can also be used with
Virtual VCR for compressing video as it is captured. It can be
download from the following web site:
http://math.berkeley.edu/~benrg/huffyuv.html
PCI capture cards using the BT8*8 chip work well, you can download
an open source WDM driver for this type of card from the following
web site:
http://btwincap.sourceforge.net
This application has been tested using a Pinnacle PCTV Rave
card with both the btwincap open source driver and also the 5.1
WDM driver from the Pinnacle site.
When capturing it is best to use the YUY2 colour space format
with your MJPEG or Huffyuv video compression codes as this will
give best performance with the lowest CPU usage.
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