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25th November 2006, 14:47 | #201 | Link |
Mr. Sandman
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exactly. also b-pyramid can be used only for 2 or more b-frames. Otherwise the codec will ignore it.
But as i said, to avoid delays or desynchs, keep the number of Bs as low as possible or dont even use them.
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25th November 2006, 18:37 | #202 | Link |
<The VFW Sheep of Death>
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...Or delay audio by (Num of B-frames)*(fps).
Or more simply: Add ~25ms (or 30, or whatever your framerate is) for each B-frame you are using. But really, it isn't that necessary-- x264's lag in AVI is hardly noticeable in most cases. And as ST said: Use a fewer number to be safe.
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25th November 2006, 23:22 | #204 | Link |
<The VFW Sheep of Death>
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Precisely.
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26th November 2006, 04:07 | #205 | Link | |
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Quote:
For NTSC Film (23.976fps) frame duration is ~41.7ms For PAL (25fps) frame duration is 40ms For NTSC TV (29.97fps) frame duration is ~33.36ms |
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26th November 2006, 12:25 | #206 | Link | |
x264 developer
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Posts: 2,392
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Quote:
Number of reference frames has nothing to do with any of the limitations of VfW or AVI. The fact that you can use multiple reference frames is what promped H.264 to distinguish between I-frames and IDR-frames. But if you treat keyframes correctly, then it doesn't matter to AVI whether you use 1 ref or 16. And B-pyramid exacerbates the general B-frame problems because it increases the amount of re-ordering, not because it adds referenced B-frames. Last edited by akupenguin; 26th November 2006 at 12:31. |
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26th November 2006, 14:30 | #208 | Link |
Angel of Night
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The problem is with editors, not players. For playback, avi just works, once the necessary changes are made to the splitters to seek properly.
However, avi editors are mostly dumb as rocks compared to directshow splitters like haali's and even microsoft's; virtualdub only just recently started supporting vbr, avidemux has for a long time, but premier, AE, aviedit, and all the other avi cutters and editors that I've used just freak out on vbr. Some crash, some output garbage, some timeshift like vdubmod, and so on. This is avi's legacy, and combining that wide support base with avi's loose specs gives a lot of interoperability problems. |
26th November 2006, 14:51 | #209 | Link |
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If you put little effort into your avi importing functions and rely on the AVIFile API (which really shouldn't be a bad thing, it is part of win32 after all) you've got no hope when it comes to VBR audio.
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26th November 2006, 14:51 | #210 | Link | |
Software Developer
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Quote:
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29th November 2006, 20:56 | #211 | Link |
<The VFW Sheep of Death>
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This is VBR audio we're talking about here, right? In terms of video, VBR has been supported since before VfW even came into existence. It practically MUST be VBR.
Anyways, DeathTheSheep United is now http://DeathTheSheep.Uni.cc Fitting, isn't it?
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29th December 2006, 07:32 | #213 | Link |
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I got "Can not Connect VidCompressor To AVIMux..." if I start capturing from tv-card with this x264?
I think I have vfw in use... Another 264er (lead) run's without error, but on playing the captured video with vlc there is only black noise ... Has someone a suggestion? |
19th April 2007, 06:55 | #214 | Link |
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There are many missing in x264vfw encoder. The original version confused "bitrate variability" with "qcomp". it said that if you change the "bitrate variability" to 100, the qcomp will be "1.00". And the "ratetol" is 4.00 forever whatever is set in "bitrate variability".
And "Const Quality" is important too. So I think the source of vfw requires to update.It is not enough that adding "fast p skip" and "DCT Decimate" only. Can the VFW encoder has all of options in MeGUI? Last edited by snow_xmas; 20th April 2007 at 12:24. |
19th April 2007, 12:54 | #215 | Link | |
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Quote:
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21st April 2007, 12:02 | #216 | Link |
Registered User
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Location: Tianjin, China
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I have built the newest x264 vfw encoder. Some options what is not in vfw before have been added. And the logo of "x264" have been removed by me because it is a waste of space and useless.
But I can't assure it have no bug. Anyone Who want it may tell me your email and I will post the source and the install package to you. Let's keep x264 vfw together! |
21st April 2007, 18:55 | #217 | Link | |
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hi ^^ i need new x264vfw
Quote:
sorry, wrong email address. ^^; Last edited by dtomoyo; 22nd April 2007 at 07:19. |
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21st April 2007, 20:17 | #218 | Link | |
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Quote:
Thank you.
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22nd April 2007, 10:48 | #220 | Link |
aka XaS
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@snow_xmas: Why not just upload your packages to some webhost somewhere and post a link here ? Megaupload or others (not rapidshare plz) are sufficient for that sort of thing, and I bet your ISP offers a small webspace where you can upload your stuff too.
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