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4th January 2005, 11:33 | #21 | Link | |
x264 developer
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4th January 2005, 12:19 | #23 | Link |
Life's clearer in 4K UHD
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Sadly, after installing .NET 2.0 beta (2.0.40467), I concur with superdump's findings!
EDIT: The "macroblock options" look interesting! Cheers
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4th January 2005, 19:41 | #24 | Link | |
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Go to windows/Microsoft.NET/framework/ Create a directory called v2.0.41013 and copy v2.0.40607 files in it, it should work , at least for me Hope for you too Thanks Doom9 for your tool |
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4th January 2005, 20:14 | #25 | Link | |
Life's clearer in 4K UHD
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I don't believe it... that procedure worked a treat There sure are some clever people around here! I wonder whether such a procedure would have worked without having to install .NET 2.0 beta at all? Many thanks
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4th January 2005, 20:28 | #26 | Link |
clueless n00b
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here's a new version, compiled against the 2.0 beta1 runtime.
I'm afraid it looks less sexy (hopefully the next official beta will be out soon - the October CTP was really unstable), but I've added job queuing as well so you can now configure multiple jobs and have them run one after another.
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4th January 2005, 20:32 | #27 | Link |
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and here's the source. I don't really feel like packaging license files and adding source comments, but consider it released under the GPL. I'll fix commandline bugs if there are any, but other than that even though I have tons of ideas, I'm not really looking favorably upon spending what little free time I have adding features to this gui. Though snow and lavc mpeg-4 output would be cool And if somebody packports it to .NET 1.1, I wouldn't mind either..
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4th January 2005, 21:17 | #29 | Link | |
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@wilbert: I think
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5th January 2005, 06:44 | #30 | Link | |
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Can I ask some questions here in this threat?
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5th January 2005, 13:23 | #31 | Link |
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i think its ok to use this thread, as the initial gui talked about doesnt support x264 till now anyways?
changed the title to a more clearer one
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau) I know, that I know nothing (Socrates) MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide) Ogg Theora | Ogg Vorbis use WM9 today and get Micro$oft controlling the A/V market tomorrow for free Last edited by bond; 5th January 2005 at 13:49. |
5th January 2005, 15:01 | #32 | Link | |
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5th January 2005, 20:06 | #33 | Link | |
stupid
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1) output four CC AVC1 would be ok for MP4 Container right? I want to mux to MP4 after encoding 2) Codec a. 2 pass, first pass: a1) Quantizer: 0 is highest quality? I want to encode 1/3 DVD. a3) Number of reference frames: 3 -5 ? a4) Number of b-frames: 2-3 wwould be a5) I want to use somethimg like adaptive. Is -2 for both ok? a7) subpixel refinements: Always QPel brings highest quality? a8) Macroblock options: Both for highest quality? b8*8mv and 4*4mv? b. 2 pass, second pass Bitrate: Bitrate for a 1/3 DVD Rip? From a calculation tool? 3) Quant & RC Buffer Size = Bitrate and I should activate "fix" ?
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5th January 2005, 20:35 | #34 | Link |
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I think AVC1 is the proper FourCC for MP4, but perhaps bond just forgot to hit me over the head until now
quantizer: it's an up/down control, so use whatever values you can obtain with the up/down buttons Unless you're telling me I screwed up the limits, all the up/downs have been adjusted to allow only entries that are permissible (though I don't know how they act if you start typing away and don't hit enter (hitting enter will enforce a valid value)). I think quant1 is the standard for best quality.. I've never heard of quant0. You'll also have to dig through the x264 thread, where you'll find suggested useful settings. For instance, if I'm not mistaken you should not use more than 1-bframe, and 3 reference frames is already much. Bitrate: you obviously have to calculate that on your own Codecs generally don't provide a calculator that really holds for each output type and scenario. For instance, you'll be hard pressed to find reliable overhead values for MP4, with a fixed 1b-frame GOP structure (I think x264 GOP structure is fixed but once again I could be mistaken.. better read the x264 thread). The fix checkbox for the buffer size is there that you can enforce a certain buffer size. By default, as long as you're in an encoding mode where you can specify a bitrate, the default buffer value is = bitrate. But on that, you'll also find some suggestions in the x264 thread.
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5th January 2005, 20:38 | #35 | Link | ||||||||
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5th January 2005, 20:39 | #36 | Link | ||||
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5th January 2005, 22:11 | #37 | Link |
<The VFW Sheep of Death>
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15 reference frames?!!! What good could possibly come of such an absurd number of refs? ;-) Man, dude, I'll try it out, heh...
But seriously...Why? Just curious. As sheeps are, mind you. Cheers, baa
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5th January 2005, 23:00 | #39 | Link |
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Results: for real movies, I have seen up to about 5% reduced bitrate for 4 refs vs 1, and up to 10% for 15 refs vs 1. (These comparisons run with no B-frames, all other options at max (cabac,subq=5))
While I haven't done a detailed study of how refs are actually used, I think I am qualified to guess. There are two uses for multiple reference frames: One is to just find blocks that more closely match the current in a scene with somewhat chaotic motion (like most live-action). This produces only a few % difference in bitrate, but only requires a few ref frames (2-4). The other is to encode scenes where one object obscures another but later moves out of the way. With sufficient refs, you can encode the backdrop as a mv from long ago, but without sufficient refs it has to be intra. This can benefit from any number of refs, easily up to 15 (and could use even more with long-term refs). The only limit is that at high numbers, it starts to get less efficient because of the number of bits required to encode which ref it used. (This is where CABAC helps. It could also be improved with adaptive ref marking and/or ref list reordering, whenever I get around to implementing those.) |
6th January 2005, 04:42 | #40 | Link |
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small letter "avc1" is indeed the four letter code defined by the mpeg-4 standard to signal avc streams in .mp4 (i think its comparable to .avis fourccs)
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