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 12th April 2013, 01:55 | #1 | Link |
| minaust Registered User Join Date: Nov 2007 Posts: 185 | x264 - 8-bit vs 10-bit? Howdy everybody... I've done a bit of homework here as to the pros and cons of 8-bit versus 10-bit encoding, and here are my assumptions: 1. 10-bit encodes will play only on my PC. Nowhere else. 2. 10-bit encodes don't have a banding problem endemic to the 8-bit encoder. As to my needs, 1 is no problem as I use my PC as a video jukebox, and I haven't encountered 2 (yet). Is there any reason to NOT switch to 10-bit x264? Are my assumptions correct? Any more pros or cons I should know about? Thanks for any replies. |
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| 12th April 2013, 02:19 | #2 | Link |
| Asmodian Registered User Join Date: Feb 2002 Location: San Jose, California Posts: 4,484 | Those are the basics but also: Pro: 10-bit is higher quality (not just the improvement in banding) at the same bitrate. Con: 10-bit encodes a bit slower and takes more CPU power to play. |
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| 12th April 2013, 05:42 | #3 | Link |
Overdrive80 Anime addict  Join Date: Feb 2009 Location: Spain Posts: 673 | In my opinion, bigger 10bit encoder´s trouble is compatibility. If this isnt trouble then x264 10bit is your best choice. __________________ Intel i7-6700K + Noctua NH-D15 + Z170A XPower G. Titanium + Kingston HyperX Savage DDR4 2x8GB + Radeon RX580 8GB DDR5 + ADATA SX8200 Pro 1 TB + Antec EDG750 80 Plus Gold Mod + Corsair 780T Graphite |
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| 12th April 2013, 06:57 | #4 | Link |
| minaust Registered User Join Date: Nov 2007 Posts: 185 | Quote: Originally Posted by Asmodian  Those are the basics but also: Pro: 10-bit is higher quality (not just the improvement in banding) at the same bitrate. Con: 10-bit encodes a bit slower and takes more CPU power to play. | I ran a test - I grabbed my nearest DVD and ripped a trailer. Basic processing: Autoceop, resize to 852x364, removegrain, then sharpen a little. 10-bit - 78 fps. 8-bit with same settings - 93 fps. 10-bit is indeed slower, but not unacceptably so. Now on my old 'puter , an old 2.8ghz P4 it would be a big deal.  Playback is with Media Player Classic HC using MADVR as the renderer. Will 10-bit use more CPU, GPU, or both? Not that it really matters - when I'm doing an encode or playing back it's typically the only thing going on. Only my CPU fan will care. |
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| 12th April 2013, 07:13 | #5 | Link |
| minaust Registered User Join Date: Nov 2007 Posts: 185 | Quote: | Originally Posted by Overdrive80 In my opinion, bigger 10bit encoder´s trouble is compatibility. If this isnt trouble then x264 10bit is your best choice. | Thank you gentlemen. You've sold me on 10-bit builds of x264 henceforth.   On the other hand, now I gotta re-rip my whole inventory.... |
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| 12th April 2013, 07:30 | #6 | Link |
kypec User of free A/V tools  Join Date: Jul 2006 Location: SK Posts: 826 | Quote: | Originally Posted by minaust On the other hand, now I gotta re-rip my whole inventory.... | Does your whole inventory suffers from visible deficiencies like banding? Otherwise it's pretty pointless to re-encode dozens of DVD when existing 8-bit quality pleases one's eyes enough. Quote: | Originally Posted by minaust Will 10-bit use more CPU, GPU, or both? | Mainly CPU because 10-bit decoding is not possible with current GPU. I'm not familiar with MadVR requirements for 10-bit post-processing though... |
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| 12th April 2013, 13:04 | #7 | Link |
| minaust Registered User Join Date: Nov 2007 Posts: 185 | Quote: | Originally Posted by kypec Does your whole inventory suffers from visible deficiencies like banding? Otherwise it's pretty pointless to re-encode dozens of DVD when existing 8-bit quality pleases one's eyes enough. | No, they suffer from a brain fart on my part. I accidentally formatted the external drive storing them.  Fortunately my vidcaps were elsewhere. Since I was already going to re-rip anyway.... Let's straighten out this 8/10-bit thingie... |
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| 15th April 2013, 06:49 | #8 | Link |
ChiDragon Registered User  Join Date: Sep 2005 Location: Vancouver Posts: 600 | It is possible to "unformat" a drive if you haven't put any new files on it yet. Otherwise things get trickier. |
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| 16th April 2013, 05:15 | #9 | Link |
| minaust Registered User Join Date: Nov 2007 Posts: 185 | Quote: | Originally Posted by ChiDragon It is possible to "unformat" a drive if you haven't put any new files on it yet. Otherwise things get trickier. | I thought about that about 30 seconds too late... Ah well, nothing irreplaceable was lost. Just a bunch of re-ripping. If my vidcaps has been on that drive.... I wouldn't be fit company for a while. |
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