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Joined: 22 Oct 2003
Posts: 75
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Here are a few tips on encoding. I have just put together a few bits and pieces for settings that I could never remember (or rather I couldn't remember whether they would be relevant to encoding high motion skate videos). They are taken from various sources but most help can be found at http://www.dvdrhelp.com, http://www.divx-digest.com:
DVD-Pal: 720x576 - 25fps
DVD-NTSC: 720x480 - 29.97fps
FILM: 24fps. Telecined to NTSC
DVD: Output frame rate is 25fps for PAL titles, 29.97fps for NTSC VCDs, NTSC Animes and NTSC TV shows and 23.976 for NTSC movies (regular hollywood stuff). Detect progr. 24Hz allows the program to detect if
the source is 24fps material and Force 24Hz will force the decoder to assume the source format is 24fps based.
If the movie is widescreen, select �NTSC Anamorphic (16:9)�.
If the movie is fullscreen, select �NTSC Anamorphic (4:3)�.
NTSC: 525 horizontal lines of which roughly 487 can be seen on screen and has a refresh ratio of 60 Hz interlaced (I'll get to that later on).
PAL: 625 horizontal lines of which roughly 540 can be seen on screen and a refresh ratio of 50 Hz interlaced.
PROGRESSIVE is when a picture consists only of one frame and isn't interlaced
Use GMC - Global Motion Compensation (GMC) is useful in improving the quality of scenes where lots of movement (especially panning, zooming) occur. You should enable this option
Use Bidirectional Encoding - Bidirectional encoding allows for the use of B frames in the encoding, in addition to the I-frame (data for this frame is completely stored) and the P-Frame (predicted frame).
This option also increases quality, so enable it as well
MV file - DivX 5.x adds MV files, which contains Motion Vector data. Having a MV file will speed up the
2-pass encoding process, as motion compensation is performed during the first pass, and will not need to be done on the second pass again
Psychovisual Enhancement :
Just like how MP3 encoding removes bits that the human ear can't hear, to decrease file size, psychovisual enhancement does the same with the video
Pre Processing Source :
This option should really be renamed to "Noise Reduction", as this is what it really does. Unless your source has lots of noise in it (which shouldn't be the case if you are converting from a DVD), so you should just disable it.
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