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31st May 2021, 21:35 | #1 | Link |
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Best Option for Bluray x265 Encodes to Maintain Quality?
Hey guys,
I have a very large blu-ray collection that I would like to backup in the best quality possible. About 25% of the collection will be backed up 1:1 without menus (main movie only). The other 75% of the movies are the ones that I need help encoding. I have an i9-9900k processor that I can use for the encoding or a 2080 Super Nvidia GPU. I have been doing a lot of reading and it seems that I will get better quality with my CPU. I want to keep the audio quality original to the source. For 5.1/7.1 i want to stick with the DTS MA/True HD tracks. For 2 channel DTS MA i can probably convert it to FLAC or keep as is depending on your recommendations. For video quality, I realize I am going to lose some detail but would like to keep it as close to the original as possible. My goal is to cut the original video file by at least 20%. I have a lot of storage but not enough to do full backups. I have used Handbrake before. Is it still a viable option in 2021 or is there something better like StaxRip? I would prefer to have a one sized fits all setting approach, if possible. If this means having to do a CRF of 16 for every movie, then that's fine by me. I realize every movie compresses differently, but as long as I save some space over the original that is what matters most. Thank you for any suggestions! I really would like to use advanced settings to maintain the best quality possible if you have any suggestions for that as well. |
31st May 2021, 23:18 | #2 | Link |
Derek Prestegard IRL
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Why bother with any of this to only save 20% on the video bitrate? Just keep the tracks you want and mux to MKV
I'd maybe consider compression if I wanted to save 40-50% or more (which is totally viable with transparency for most BluRay discs using x265). |
1st June 2021, 00:10 | #3 | Link | |
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I have been playing around with Handbrake and so far I have come up with the following for my Bluray backups. Video Codec: x265 10 Bit Framerate Same as Source Constant Framerate Encoder Preset Slow CRF 16-18 depending on movie Encoder Profile HIGH Encoder Level 4.1 deblock -3,-3 I'm not sure on more advanced options to input. I know the Encoder Tune setting will change the advanced options further as well. Any tips appreciated! Thank you |
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1st June 2021, 00:37 | #4 | Link |
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Those are good options. Slower is still helpful, if you can stand the speed decrease (1000s will take a while on a 9900k). CRF 18 should give great quality and still be noticeably smaller.
For anime and similar --tskip is very helpful.
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1st June 2021, 01:32 | #5 | Link |
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Thank you! With how inexpensive HDDs are now, I may just back these up with full quality instead. I'm not a professional encoder so I feel like I may end up leaving quality on the table and with my OCD, I should probably just stick to main movie "Muxing."
Last edited by StormMeows; 1st June 2021 at 02:43. |
1st June 2021, 05:52 | #6 | Link | |
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In the end the only thing that matters is that you're happy with the encode and your eyes and ears can't tell the difference. |
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1st June 2021, 20:07 | #7 | Link | |
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Hopefully this will not be a long term trend. Chia prices are less than half of the release price so it doesn't seem like a very attractive target for mining.
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1st June 2021, 21:25 | #8 | Link | ||
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Last edited by StormMeows; 25th June 2021 at 00:15. |
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3rd June 2021, 22:15 | #9 | Link |
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Still, ask yourself if reencoding saves enough to be worth your time, reduced ability to use your computer, and increased power bill. Doing an elementary stream bit-copy means you don't have to worry about whether you are losing video quality, and thus don't have to test and tune to avoid it.
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23rd June 2021, 22:02 | #10 | Link | |
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24th June 2021, 09:36 | #11 | Link | |
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For example you can try out MeGUI or StaxRIP to see what you like the best. No one will be able to answer what the best possible encode is for you, as you can put in settings that are so slow that it will never be feasible for you to encode your archive, but it might work for some ones else workflow and requirements. But something like this would be a place to start: Code:
1080p24 SDR --preset slow --profile main10 --level-idc 41 --crf 17 --keyint 240 --min-keyint 24 --no-sao --deblock -1:-1 --aq-mode 1 + flags (--colorprim bt709 --transfer bt709 --colormatrix bt709 --range limited) 2160p24 HDR --preset slow --profile main10 --level-idc 51 --crf 16 --keyint 240 --min-keyint 24 --no-sao --deblock -1:-1 --aq-mode 1 --hdr-opt + flags (e.g. --colorprim bt2020 --transfer smpte2084 --colormatrix bt2020nc --max-cll "1000,400" --master-display "G(13250,34500)B(7500,3000)R(34000,16000)WP(15635,16450)L(10000000,1)" ) When it comes to the CRF value I usually increase it by 1 for 2160p, and decrease it by 2 for HDR content from what I use as a baseline for 1080p SDR. Last edited by excellentswordfight; 25th June 2021 at 18:51. |
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24th June 2021, 17:37 | #12 | Link |
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I'm skeptical that the effort to find your settings and actually run the encodes is going to save you on net versus more storage. You can get a good HD for $25/TB or less. Non-4K Blu-ray discs max out at 50 GB with most using less that that, and a lot less if you select the tracks you care about, you're looking at <$1/disc for just remuxing. A typical good PC will still take 12+ hours to reencode a full movie at a quality and bitrate savings worth the effort.
Since pre-4K Blu-ray discs only use 8-bit H.264, you can get some speed back by encoding in 8-bit HEVC. 10-bit won't give any quality improvements or bitrate savings with HEVC, unlike H.264. H.264 would get significant savings encoding in 10-bit from 8-bit source, but HEVC fixed 8-bit so there isn't that efficiency gap. |
25th June 2021, 00:12 | #13 | Link | ||
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25th June 2021, 01:48 | #14 | Link |
Derek Prestegard IRL
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NVENC is not a good fit for your goals
As you've seen, it's super fast and not too bad, but it doesn't retain fine detail well, especially if your goal is to make smaller outputs than the encodes already on your discs. If you want a transparent BluRay quality encode you need software encoding. x265 is ideal for this. You could use 8 or 10 bit, but the benefit of 10 bit (from an 8 bit source) isn't really there with HEVC. There's no harm in using 10 bit tho, since any HEVC decoder you care about will support both. Software HEVC encoding is indeed processor (thus time and money) intensive -- hence why we both recommend just remuxing |
25th June 2021, 08:37 | #15 | Link | ||
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And yes, stock speed and manual undervolting is a good combo. The amount of power it saves can really make a difference. AMD's automatic overclocking (PBO) may sound like a good idea but with video encoding it's not. It will only cause the temperatures and power usage shoot through the roof but the gain in performance is quite small.
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25th June 2021, 19:02 | #17 | Link | ||||
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Last edited by excellentswordfight; 25th June 2021 at 19:05. |
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