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24th April 2008, 17:33 | #41 | Link |
Registered User
Join Date: Aug 2006
Posts: 2,229
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With a non-grainy source, any chance of a film grain threshold? Adaptive strength based on threshold? That would be particularly useful for mixed videos!
I have noticed with the couple of clips I did the file size increased significantly, but I guess thats expected! (the results are great). I read somewhere that the b-frame decision of x264 could be improved, is this true? Would that affect the FGO? Would storing the main film grain in b-frames and using the principles of your grain optimiser plugin actually work, in an effort to reduce the output size impact (maybe as a different mode to fgo)? Last edited by burfadel; 24th April 2008 at 17:38. |
24th April 2008, 19:10 | #42 | Link | ||
x264 developer
Join Date: Sep 2005
Posts: 8,666
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You mean storing the grain in P-frames? That's actually already done in a sense since the B-frames often simply take the grain from the neighboring P-frames instead of re-encoding their own new grain. FGO makes this much more likely, since the bidirectional mode, which generally gives the best RD score, tends to blur out grain (making FGO less likely to select it). |
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25th April 2008, 19:18 | #53 | Link |
Hates all his encodes
Join Date: Sep 2003
Posts: 166
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I'll have to try this with older cel-style anime... The grain present often gets turned into flat blocking.
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25th April 2008, 20:40 | #55 | Link | |
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25th April 2008, 22:33 | #56 | Link |
Freevo Developer
Join Date: May 2007
Location: Waterloo, Ontario
Posts: 118
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The patch truly does wonders for grain, but the resulting bitrate increase was a bit disappointing (even if not unexpected). VAQ+prestige still satisfies my eyes and the bitrate is quite manageable. I count myself lucky not to be among those tuned into the style of artifacting caused by prestige that others have pointed out.
When the h264 user/developer community sorts out FGM, then I'll launch fireworks from my balcony. |
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