2009-04-21, 15:47 | Link #82 | |
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It hit 460MB on crf 18 @ 848x480 without any filtering (Except IVTC, it's VFR) |
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2009-04-21, 17:23 | Link #83 |
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OK, made 2 encodes for Zettai Karen Children 05. One was at 350 MB which generated an average p-quant of 18.6. The second was at 700 MB which generated an average p-quant of 14.6. Both were encoded from the same raw, same filters, and same x264 avisynth script. The only difference is the bitrate.
700 MB: 350 MB:
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2009-04-21, 19:13 | Link #85 | |
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By the way, this show is high action, high motion, 29.970 fps, HD, and 24 minutes 30 seconds long, so it should be perfect for these types of comparisons in my opinion, since it is so poorly compressible. >.< If there's no real practical difference here, I don't see why ANY regular 24 minute 23.976 fps show would warrant more than 350 MB, unless it was a Blu-Ray.
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2009-04-21, 19:23 | Link #87 | |
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But the screenshots I posted were on the thread topic of file sizes which go over 350 MB. Well, only the encode will tell us for sure. XD At least I remembered to put the frame numbers in the pictures.
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2009-04-21, 19:54 | Link #89 |
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I'm sorry, not to troll or anything but can i ask what kind of filtering you used ?
The banding on the last panel looks pretty bad. Can you post the source, UNFILTERED ? (just ivtc + resize/crop, nothing else) so yea, if you're going to oversmooth and use LSF (thus introduce banding), you're gonna get the same shitty result whatever the size because the video already lost details (Gradient in this case). On the other hand, if you kept the filtering minimal and actually added a debander to your script then the 700MB would look MUCH better. There's an appropriate time for each size and it depends on your filtering : If you oversmooth, low size will usually do the trick and this is exactly what happened in this case. Last edited by Waryas; 2009-04-21 at 20:48. |
2009-04-21, 19:56 | Link #91 |
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@ op 1gb of hdd space is less than 3cents, if you can't afford that i recommend you go stream your anime
i mean everyone else is willing to download stuff regardless of the filesize! |
2009-04-21, 20:18 | Link #92 | |
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2009-04-21, 20:56 | Link #96 | |
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dfttest(sigma=0.5) http://img23.imageshack.us/img23/2127/source.png
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2009-04-21, 20:59 | Link #97 | |
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2009-04-21, 20:59 | Link #98 | |
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this is the effect of using LSF without the appropriate masks, it also affects noises / existing bandings and make it worse and then you're denoising/smoothing it (and that will make the "sharpened" banding even worse). For me, filtering isn't about increasing compressibility but making it look better and then choose the adequate size to retain most of the enhancements. In your next test try encoding the new .avs to both 350 & 700MB and compare the difference again (Well whenever you have free time, lol) Last edited by Waryas; 2009-04-21 at 21:13. |
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2009-04-21, 21:05 | Link #99 | |
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I've been looking into debanding and dotcrawl a lot for K-On's widescreen version, but you have to realize I'm putting like no effort into the first 13 encodes of this series. Someone gave me that chain 4 months ago, and I've been using it because I honestly don't care. And yes, I do it in a different order usually. I just don't bother changing it here because I don't care. >.>
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2009-04-21, 21:10 | Link #100 |
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What i'm trying to say, next time you want to do a compressibility test with x264 (350mb vs 700mb or whatever)
just try to do it with little to no filtering. For debanding, there's gradfun2dbmod which is pretty good but you're gonna need way more bitrate to keep it in your final encode. (Try a CRF encode first to estimate the bitrate needed) As for de-dotcrawl, there's no magical solution, try and see by yourself the filters out there to find whatever you like best. |
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