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2nd October 2006, 23:28 | #3 | Link |
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I'm interrested to know too. For RealAnime
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2nd October 2006, 23:49 | #5 | Link |
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so what would be good examples when to use deadzone (bitrate or which crf number) and what value to enter there then?
btw. i cant see those options to be toggled in megui, hasnt the gui been updated for this yet ? Last edited by Thunderbolt8; 2nd October 2006 at 23:54. |
3rd October 2006, 00:21 | #6 | Link |
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Does --direct-8x8 change the quality? or it's just a comptability flag?
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3rd October 2006, 07:23 | #8 | Link |
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In the past it has always been off whenever possible, even when that violated Levels, (under the assumption that off was better quality). Then I ran some tests and found that it had no measurable effect on quality one way or the other, so I fixed it to be compliant.
Last edited by akupenguin; 3rd October 2006 at 08:09. |
3rd October 2006, 15:22 | #10 | Link |
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Hi everybody.
As IgorC said --deadzone should help to preserve more fine details and film grain at medium - high bitrates, i would suggest that people start by tweaking --deadzone-intra because that seems to make the most difference here, the default value for --deadzone-intra is 11 but something closer to 0 should help detail preservation a bit, it might also be beneficial to combine it with a CQM. |
3rd October 2006, 19:36 | #11 | Link |
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Uhm... doing some usual movie trailers encodings...
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3rd October 2006, 20:40 | #13 | Link | |
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Quote:
for me >3mbps is high, 1.5-3mbps is medium and <1.5mbps is low (this is where most my encodes are). So is the switch unlikely to affect me, or are your numbers lower for respective ranges? this info should be put in some sticky, I hear people all the time saying low/mid/high bitrate, those words mean nothing without numbers.
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Geforce GTX 260 Windows 7, 64bit, Core i7 MPC-HC, Foobar2000 Last edited by lexor; 3rd October 2006 at 20:58. |
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3rd October 2006, 21:00 | #14 | Link |
Mr. Sandman
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when someone generalizes on the bitrate, it means a number would be useless.
It ALL depends on the source compressibility. Think it this way: ultralow bitrate = the encoding looks like crap. low bitrate = the encoding looks acceptable but certainly not good. mid bitrate = the encoding looks good but it's not perfect. high bitrate = the encoding looks near perfect.
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3rd October 2006, 21:02 | #15 | Link | |
Mr. Sandman
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Quote:
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3rd October 2006, 21:21 | #16 | Link | |
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DVD5 = great movie that I'd watch over and over 1/2 DVD5 = a (cult)classic that wouldn't be watched more then a few times a year (if that) 1 CD - 1/3 DVD5 = movie is worth a chuckle, but not the bitrate this farily stably derives the value ranges I gave above. Series are of course exempt from the above.
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Geforce GTX 260 Windows 7, 64bit, Core i7 MPC-HC, Foobar2000 Last edited by lexor; 3rd October 2006 at 21:24. |
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3rd October 2006, 21:25 | #17 | Link |
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Just to give people a bit more of an idea of what deadzone does; Deadzone determines how much "insignificant" information is droped. Higher values of deadzone help avoid artifacts by eliminating useless information at lower bitrates, and freeing up the bitrate that information would have used - to keep more important information with better quality. Lower values preserve more of the original source information, but to reach a given bitrate that information will have to be compressed more then if a higher value of deadzone was used.
Higher values of deadzone will give a cleaner, smoother, less detailed look, while lower values will give a noisier, crisper, higher detail look, similar to older mpeg varients. Edit: updated the description of deadzones effect, after preliminary testing 6 seems to have about the same detail preservation as Xvid. Last edited by *.mp4 guy; 3rd October 2006 at 23:28. |
3rd October 2006, 22:42 | #18 | Link |
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again my question, i cant find that in megui, so is this implented in the x264 installer only to be found on x264.nl ? if so, will this implemention also be done for the megui (or if its already there enlighten me plz how I can find it).
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3rd October 2006, 23:20 | #20 | Link | |
Mr. Sandman
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Quote:
do what asdfsauce said.
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MPEG-4 ASP Custom Matrices: EQM V1(old), EQM AutoGK Sharpmatrix (aka EQM V2), EQM V3HR (updated 01/10/2004), EQM V3LR, EQM V3ULR (updated 04/02/2005), EQM V3UHR (updated 17/12/2004) and EQM V3EHR (updated 05/10/2004) Info about my ASP matrices. MPEG-4 AVC Custom Matrices: EQM AVC-HR Info about my AVC matrices My x264 builds. Mooo!!! |
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