2009-07-14, 14:43 | Link #401 |
Lonely Traveler
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Alrighty, I just finished playing around with AviSynth and an anime raw for the first time. Cut out commercials, made some adjustments here and there. I've started my encode to h.264 and the length of the first pass is estimated at ~20 hours. I've no idea how long the second pass will take.
This is my first time doing more than what's automated in MeGUI in AviSynth. Does it typically increase the encode time this much? Thus far, I've typically just encoded my movies that I've backed up, without much AVS. I usually get great quality and the length of the encoding is about the same as what I'm experiencing now. But that's with feature length films, not a 24 minute anime. Anyways, It's been a long time since I've done any encoding at all, and I'm diving into AVS this time as well as expanding what I know about the various x264 settings (which, admittedly, isn't nearly as much as I'd like) and trying not to bury myself in the process. I hate it when I do this. I typed all of this out and now I forget where I was going with it. Anyway, is this encoding speed typical? I probably should have just encoded a 30 second clip of it, but I really don't think it's going to turn out poorly. |
2009-07-14, 23:46 | Link #402 | |
x264 Developer
Join Date: Feb 2008
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2009-07-15, 05:41 | Link #403 |
Lonely Traveler
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I did pick slow settings, but I didn't think they'd be this slow. Ha. I've been learning about what the settings in x264 do, but not much about how they affect encoding speed.
Anyways, I was just wondering if a non-trivial AviSynth script normally affects the encoding speed much and whether or not it's worth it. |
2009-07-15, 07:12 | Link #404 | |
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2009-07-15, 17:45 | Link #405 |
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Location: Virginia Tech
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That's the weird thing. The only dll in there that don't ship with it are ffmpegsouce and tivtc. I don't think it's likely they're causing the problem, since they're common usage, but I'll try it.
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2009-07-17, 16:24 | Link #406 | |
x264 Developer
Join Date: Feb 2008
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We're working on optimizing for ARM now, so you'll be able to run x264 on your iPhone 3GS. |
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2009-07-26, 22:18 | Link #407 |
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Join Date: Apr 2009
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I was reading those posts about SAR and DAR.
Info: DVD Source 16/9 - 720x480 In order to keep mod16 resX&resY I crop 8 at each border so I get 704x464. (I have black borders everywhere but less than 16 total) I thought you could just encode setting sar to 1:1 and then mux it setting "Aspect Ratio" to 16/9 (mkvmerge). Now, as someone (Scab) said, I'm trying to make use of the x264 sar param. But I'm not sure how to do it, I think the correct SAR is 32:27. I took it from the "ARS Calculator", 704:464 as PFS and 16:9 as MAR. I played the new file and the VOB file, and it looks pretty equal, mine looks a little bigger but that's because it has been cropped by 8 at each border. So, did I do something wrong? |
2009-07-26, 23:22 | Link #408 | |
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Join Date: Apr 2006
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EDIT: I just want to be sure that you understand you're aiming to have the content of the picture displayed in its correct proportion (not deformed), not the picture itself. It doesn't matter if the picture isn't displayed exactly at 16/9. In fact, it won't, because you cropped at the top and bottom of the picture. But again, it doesn't matter. EDIT: Geez, I messed up (that's what I get for writting at 4 AM ><)
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Last edited by Kazu-kun; 2009-07-27 at 11:23. |
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2009-07-27, 07:27 | Link #409 |
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Join Date: Apr 2009
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Ups, actually it has black borders at the top, left and right. I cropped from the bottom to get the mod16 at resY.
Should I consider the VOB as the correct proportion? Because when I set --sar 40:33 it looks deformed (little) if I compare it to the VOB. "ARS calc" says that 40:33 is the SAR to 704x480 at 16/9, not 720x480 (which was 32:27), I said it wrong before, for 704x464 is 116:99. Really, I'm very confused. I understand that what I want is the correct proportion. The picture itself is not going to be 16/9 because I cropped it, and I don't want to resize, so I don't care about it. What I'm trying is to set the correct proportion. BTW, thanks for the explanation. |
2009-07-27, 10:12 | Link #411 |
Junior Member
Join Date: Apr 2009
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I was thinking about that 1.85... The DVD box says 16:9 LB (I guess it means Letterbox) but the VOB file does not show any black border at the bottom, just around 3 lines at the top.
Edit: I played the DVD with WMP and MPC and the file encoded with --sar 40:33 looks wider (deformed). Last edited by TrickyDream; 2009-07-27 at 10:47. |
2009-07-27, 13:24 | Link #416 |
Junior Member
Join Date: Apr 2009
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I'm sorry but I really want to understand.
I don't know why it's 40:33. DVD 720x480, 16:9, no crop: to have a correct Aspect Ratio: --sar 1:1 + resize 720x480 > 853x480 or 873x480? or --sar 40:33 + noresize (source 720x480), then I get 873x480 = It is not 16/9 cropping 8 at X and -X: 704x480 --sar 40:33 + noresize (source 704x480), then I get 853x480 = It is 16/9 But If I crop 8, -8, 8, -8, the source is: 704x464 --sar 40:33 + noresize (source 704x464), then I get 853x464 ? The image looks wider because it expands the difference of 16 lines of the X-axis without expanding the 16 of the Y-axis. I mean, if the source was 704x480, 40:33 seems to be OK but not for 720x480. Or what I have to do is not a 16/9 AR in anime but 1.81875, or just the video should be treated as 704x480. It's only a guessed theory. This is what I see, if you could explain why is it wrong, I would appreciate it. Thanks. |
2009-07-27, 15:44 | Link #417 | |
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Join Date: Dec 2005
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Why are you using SAR at all, is your target container something that doesn't support a DAR header? Getting the SAR right usually involves a lot more maths than getting the DAR right, and the end result is the same, so why bother?
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2009-07-27, 16:17 | Link #420 | |
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But Scab is right. SAR is pretty simple, and you should always use 40:33, even if you cropped the picture. As long as you don't resize, it's always 40:33.
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