Quantcast KVCD: B-Spoilage and P-Spoilage - digitalFAQ.com Forums [Archives]
  #1  
06-17-2002, 04:42 PM
Jellygoose Jellygoose is offline
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Hi Kwag!

I noticed that your KDVD Half 1 Template uses B-Spoilage 20.

What actually IS B-Spoilage and P-Spoilage, and will higher numbers increase file-size and quality?
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  #2  
06-18-2002, 09:17 PM
rackaboy rackaboy is offline
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well, it is tmpenc default setting, so I would just leave it
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06-20-2002, 02:20 PM
Rookie Rookie is offline
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I just did some test encodes of frame 800 to 2300(1 minute) of my DVD Starship Troopers and the KVCD 352x576 PAL template with different B and P Spoilage settings. Encoding was directly from the .d2v

Kbytes P B

11408 0 0 (default)
10632 0 40
10568 40 0
9888 40 40
12432 -40 0
11572 0 -40
12756 -40 -40
10624 40 -40
11732 -40 40


Apart from the obvious conclusion that positive values reduces the filesize Im not quite sure what to make out of this. I dont have time right now to measure the visual quality of the clips. It might be an method to alternate the allocation of bitrate between B and P frames.

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06-21-2002, 09:50 AM
Jellygoose Jellygoose is offline
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Thanks Rookie...

I'll run some test with B and P Spoilage 40 / 40 ... I don't think it influences the quality that much, compared to the decrease in filesize...

Thanks Rookie !!
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