B-VOPS, Lanc and I

Technology Apr 13, 2005

Another pause, ponder and reflect moment as I read back a forum entry I’ve just written:

“Also I currently use VirtualdubMPEG2, resized via inbuilt filter to 576×324 Lanc, 2 pass, AS @ L5, ( B-VOPS 2 / 1.5 / 1.00) with [ Adap Q, Interlaced Enc, QPEL, GMC] all off, if that helps”

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If that helps? I sure hope the target speaks in abbrev’s and acro’s 🙂 I’m seeking advice and ‘tuning tips’ for some video conversion.

Lanc = Lanczos resizing.
AS @ L5 is an MPEG-4 profile, which defines the characteristics of the target (playback) device
B-VOPS, Adaptive Quantization, Interlaced Encoding, Quarter Pixel and Global Motion Compensation are all options for encoding.

A VOP is a Video Object Plane, sort of like a frame. B means Bidirectional; this frame’s compression is influence by the frames before and after it.