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  1. Can somebody x-plane or kindly refer me to any source regarding what/which type of avi format I should use?

    I just bought a TV Tuner/Capture card and it is listed a few type of avi compression that I can use.

    1) RGB 555 (16 bit)
    2) YUY2
    3) YVU9
    4) YV12
    5) RGB 24

    I usually capture TV Programs and Capture from my analog camcorder and convert them to VCD.

    Please help. I'm new in this area.

    mamushiraz
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  2. with rgb 24 you wont have any colour loss... but with yuy2 you will have a better performance. with an encoder like tmpgencoder you can correct the colours. so, i think you should use yuy2
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  3. Member
    Join Date
    Jan 2002
    Location
    Australia
    Search Comp PM
    For an explaination from some guy called Avery, using the name 'virtualdub' , go here:

    http://arstechnica.infopop.net/OpenTopic/page?q=Y&a=tpc&s=50009562&f=67909965&m=9060945491

    Hell, I'll make it easy for you! Here is a copy of the most relevant bit (with all credit and blame directed at the original author!!! )

    A rough rundown on capture formats:


    RGB32: The same quality as RGB24 with the bonus of 33% more useless data.
    RGB24: Although twice the horizontal color resolution as YUY2, it tends to get produced by upsampling and thus with most capture devices you
    won't get any additional quality by using it, just 50% more unnecessary data. However, it is by far the most compatible format when it comes to
    codecs and encoders.
    RGB16: Gives you the same data rate as YUY2 (1/3rd less than RGB24), but with significant banding. Good for video displays, bad for video
    storage.
    YUY2: In most cases, the best. It's usually the closest you can get to data right out of the video decoder and it offers significant speed and/or size
    improvements over RGB24 (it's one-third smaller). This is the preferred format of Avisynth and Huffyuv. UYVY is a byte ordering change from YUY2
    and either will do if both capture device and codec accept them.
    YVU12 (YV12/I420): 25% less data than YUY2 in exchange for slightly more color bleeding vertically; this is the color space of MPEG-1. There is no
    difference in luminance. Not very well supported, unfortunately, and I wouldn't use it even if you were targetting MPEG-1.
    YVU9: 25% less data than YVU12 and 43% less data than YUY2, but significant color bleeding -- this is the color space of Indeo. Not very well
    supported and I wouldn't recommend it.

    Huffyuv is a lossless codec by Ben Rudiak-Gould that gives around 2:1 compression for decently clean source. Although it is slow at decompression, it has
    very fast compression and is competitive with PICVideo MJPEG for high-quality capture. It gets significantly better compression with YUY2 or UYVY input
    than with RGB. This is my method of choice, but it requires a LOT of disk space if you have a noisy feed -- something like 10GB per half hour for me, at
    640x480x29.97fps with CD-quality audio.

    As for PICVideo MJPEG, if you want universally compatible MJPEG (hardware devices and other software codecs) you need to set the codec to 4:2:2 color
    space -- 1:1:1 and 4:1:1 are non-standard. You can also get better quality than the slider allows by clicking Advanced and dropping the quantizers even
    lower. Finally, if you plan to do any field processing (adaptive deinterlace, IVTC) you should check the "two fields" box in the codec properties.
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