Welcome to Doom9's Forum, THE in-place to be for everyone interested in DVD conversion. Before you start posting please read the forum rules. By posting to this forum you agree to abide by the rules. |
10th March 2016, 18:44 | #3381 | Link | |
Registered User
Join Date: Jan 2016
Posts: 4
|
Quote:
2) MiddlePC, i5 4460, 12GB DDR3 1600, GTX 660. Win8.1_64 Last edited by j1731630; 10th March 2016 at 18:46. |
|
10th March 2016, 19:07 | #3382 | Link |
German doom9/Gleitz SuMo
Join Date: Oct 2001
Location: Germany, rural Altmark
Posts: 6,784
|
Alright, quite good hardware available.
Handbrake is a quite common tool, but a little more targeted towards portability across different OS'. There is also VidCoder as an additional UI, using Handbrake as converter engine, which is itself based on ffmpeg. You may also try Hybrid (by Selur) or TEncoder. But there are more flexible tools specifically for Windows, using AviSynth rather than ffmpeg. One quite common converter of this family is StaxRip; MeGUI is a bit more technical, for advanced users. I bet I forgot about half a dozen more. But there are software archives with a lot of video converters, e.g. at VideoHelp. |
10th March 2016, 19:39 | #3383 | Link |
Registered User
Join Date: Dec 2002
Posts: 5,565
|
I still get some weird effect:
Original: http://abload.de/img/original_oduca.png No tuning: http://abload.de/img/no_tuning_q6uqn.png Tune grain with weird effect: http://abload.de/img/tune_grain_3luci.png x265 1.9+86 10 bit 2pass, --preset slower (--tune grain) --bitrate 7000 Source and output files download |
11th March 2016, 01:16 | #3384 | Link |
Registered User
Join Date: May 2015
Posts: 185
|
@littlepox: The results are here.
First infos about the source: General Unique ID : 149648185676370562747073954039042049003 (0x709531337A3D6C98B6E41B9A40DA83EB) Complete name : D:\source.mkv Format : Matroska Format version : Version 1 File size : 19.4 GiB Duration : 2h 8mn Overall bit rate mode : Variable Overall bit rate : 21.6 Mbps Encoded date : UTC 2016-03-10 02:21:51 Writing application : eac3to Writing library : Haali DirectShow Matroska Muxer 1.13.138.14 Video ID : 1 Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.1 Format settings, CABAC : Yes Format settings, ReFrames : 4 frames Format settings, GOP : M=3, N=24 Muxing mode : Container profile=@0.0 Codec ID : V_MPEG4/ISO/AVC Duration : 2h 8mn Bit rate mode : Variable Bit rate : 21.2 Mbps Maximum bit rate : 28.0 Mbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16:9 Frame rate mode : Constant Frame rate : 23.976 fps Standard : NTSC Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Progressive Bits/(Pixel*Frame) : 0.426 Stream size : 19.1 GiB (98%) Default : No Forced : No Color range : Limited Color primaries : BT.709 Transfer characteristics : BT.709 Matrix coefficients : BT.709 Then the .avs script used: LoadPlugin("C:\Program Files (x86)\MeGUI\tools\lsmash\LSMASHSource.dll") LWLibavVideoSource("D:\source.mkv") #deinterlace crop(0, 20, 0, -20) #resize #denoise Then the x265 parameters used: @echo off avs4x265.exe -P x265.exe --preset slower --ctu 32 --max-tu-size 16 --crf 18 --tu-intra-depth 2 --tu-inter-depth 2 --rdpenalty 2 --me 3 --subme 5 --merange 44 --b-intra --no-amp --ref 5 --weightb --keyint 360 --min-keyint 1 --bframes 8 --aq-mode 1 --aq-strength 1.0 --rd 5 --psy-rd 1.6 --psy-rdoq 8.0 --rdoq-level 1 --no-sao --no-open-gop --rc-lookahead 80 --max-merge 4 --qcomp 0.80 --no-strong-intra-smoothing --deblock -2:-2 --qg-size 16 --pbratio 1.2 --output slower.hevc %1 pause Then what the log output spit out: avs [info]: AviSynth 2.60 (ICL10) avs [info]: Video colorspace: YV12 avs [info]: Video resolution: 1920x1040 avs [info]: Video framerate: 24000/1001 avs [info]: Video framecount: 185220 avs4x265 [info]: "x265.exe" - --frames 185220 --fps 24000/1001 --input-res 1920x1040 --input-csp i420 --preset slower --ctu 32 --max-tu-size 16 --crf 18 --tu-intra-depth 2 --tu-inter-depth 2 --rdpenalty 2 --me 3 --subme 5 --merange 44 --b-intra --no-amp --ref 5 --weightb --keyint 360 --min-keyint 1 --bframes 8 --aq-mode 1 --aq-strength 1.0 --rd 5 --psy-rd 1.6 --psy-rdoq 8.0 --rdoq-level 1 --no-sao --no-open-gop --rc-lookahead 80 --max-merge 4 --qcomp 0.80 --no-strong-intra-smoothing --deblock -2:-2 --qg-size 16 --pbratio 1.2 --output slower.hevc yuv [info]: 1920x1040 fps 24000/1001 i420p8 unknown frame count raw [info]: output file: slower.hevc x265 [info]: HEVC encoder version 1.9+73-6d06de58c316 x265 [info]: build info [Windows][GCC 5.3.0][64 bit] 8bit x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2 x265 [info]: Main profile, Level-5 (Main tier) x265 [info]: Thread pool created using 16 threads x265 [info]: frame threads / pool features : 5 / wpp(33 rows) x265 [info]: Coding QT: max CU size, min CU size : 32 / 8 x265 [info]: Residual QT: max TU size, max depth : 16 / 2 inter / 2 intra x265 [info]: ME / range / subpel / merge : star / 44 / 5 / 4 x265 [info]: Keyframe min / max / scenecut : 1 / 360 / 40 x265 [info]: Intra 32x32 TU penalty type : 2 x265 [info]: Lookahead / bframes / badapt : 80 / 8 / 2 x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 1 x265 [info]: References / ref-limit cu / depth : 5 / 1 / 0 x265 [info]: AQ: mode / str / qg-size / cu-tree : 1 / 1.0 / 16 / 1 x265 [info]: Rate Control / qCompress : CRF-18.0 / 0.80 x265 [info]: tools: rect limit-modes rd=5 psy-rd=1.60 rdoq=1 psy-rdoq=8.00 x265 [info]: tools: signhide tmvp b-intra lslices=4 deblock(tC=-2:B=-2) x265 [info]: frame I: 1520, Avg QP:14.06 kb/s: 27871.26 x265 [info]: frame P: 36198, Avg QP:16.17 kb/s: 18701.89 x265 [info]: frame B: 147502, Avg QP:18.18 kb/s: 7831.84 x265 [info]: Weighted P-Frames: Y:1.3% UV:0.9% x265 [info]: Weighted B-Frames: Y:1.0% UV:0.7% x265 [info]: consecutive B-frames: 7.5% 5.2% 6.5% 15.3% 7.1% 54.1% 2.9% 0.6% 0.8% encoded 185220 frames in 77139.97s (2.40 fps), 10120.65 kb/s, Avg QP:17.76 Press a key to continue... And the resulted file details from mediainfo / mpc-hc: General Format : HEVC Format/Info : High Efficiency Video Coding File size : 9.10 GiB Writing library : x265 1.9+73-6d06de58c316:[Windows][GCC 5.3.0][64 bit] 8bit Encoding settings : wpp / ctu=32 / min-cu-size=8 / max-tu-size=16 / tu-intra-depth=2 / tu-inter-depth=2 / me=3 / subme=5 / merange=44 / rect / no-amp / max-merge=4 / temporal-mvp / no-early-skip / rdpenalty=2 / no-tskip / no-tskip-fast / no-strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / no-open-gop / no-temporal-layers / interlace=0 / keyint=360 / min-keyint=1 / scenecut=40 / rc-lookahead=80 / lookahead-slices=4 / bframes=8 / bframe-bias=0 / b-adapt=2 / ref=5 / limit-refs=2 / limit-modes / weightp / weightb / aq-mode=1 / qg-size=16 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=5 / psy-rd=1.60 / rdoq-level=1 / psy-rdoq=8.00 / no-rd-refine / signhide / deblock=-2:-2 / no-sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=crf / crf=18.0 / qcomp=0.80 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.20 Video Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main@L5@Main Width : 1 920 pixels Height : 1 040 pixels Display aspect ratio : 1.85:1 Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Writing library : x265 1.9+73-6d06de58c316:[Windows][GCC 5.3.0][64 bit] 8bit Encoding settings : wpp / ctu=32 / min-cu-size=8 / max-tu-size=16 / tu-intra-depth=2 / tu-inter-depth=2 / me=3 / subme=5 / merange=44 / rect / no-amp / max-merge=4 / temporal-mvp / no-early-skip / rdpenalty=2 / no-tskip / no-tskip-fast / no-strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / no-open-gop / no-temporal-layers / interlace=0 / keyint=360 / min-keyint=1 / scenecut=40 / rc-lookahead=80 / lookahead-slices=4 / bframes=8 / bframe-bias=0 / b-adapt=2 / ref=5 / limit-refs=2 / limit-modes / weightp / weightb / aq-mode=1 / qg-size=16 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=5 / psy-rd=1.60 / rdoq-level=1 / psy-rdoq=8.00 / no-rd-refine / signhide / deblock=-2:-2 / no-sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=crf / crf=18.0 / qcomp=0.80 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.20 It doesn't tell the actual bitrate until merged into a .mkv container: General Unique ID : 226389536216421172588785103110168979842 (0xAA5109E78E571BDBACF0BFAA0BDD2982) Complete name : D:\slower.mkv Format : Matroska Format version : Version 4 / Version 2 File size : 9.10 GiB Duration : 2h 8mn Overall bit rate : 10.1 Mbps Encoded date : UTC 2016-03-11 00:01:03 Writing application : mkvmerge v8.9.0 ('Father Daughter') 64bit Writing library : libebml v1.3.3 + libmatroska v1.4.4 DURATION : 02:08:45.218000000 NUMBER_OF_FRAMES : 185220 NUMBER_OF_BYTES : 9773771334 _STATISTICS_WRITING_APP : mkvmerge v8.9.0 ('Father Daughter') 64bit _STATISTICS_WRITING_DATE_UTC : 2016-03-11 00:01:03 _STATISTICS_TAGS : BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : Main@L5@Main Codec ID : V_MPEGH/ISO/HEVC Duration : 2h 8mn Bit rate : 9 922 Kbps Width : 1 920 pixels Height : 1 040 pixels Display aspect ratio : 1.85:1 Frame rate mode : Constant Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Bits/(Pixel*Frame) : 0.207 Stream size : 8.92 GiB (98%) Writing library : x265 1.9+73-6d06de58c316:[Windows][GCC 5.3.0][64 bit] 8bit Encoding settings : wpp / ctu=32 / min-cu-size=8 / max-tu-size=16 / tu-intra-depth=2 / tu-inter-depth=2 / me=3 / subme=5 / merange=44 / rect / no-amp / max-merge=4 / temporal-mvp / no-early-skip / rdpenalty=2 / no-tskip / no-tskip-fast / no-strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / no-fast-intra / no-open-gop / no-temporal-layers / interlace=0 / keyint=360 / min-keyint=1 / scenecut=40 / rc-lookahead=80 / lookahead-slices=4 / bframes=8 / bframe-bias=0 / b-adapt=2 / ref=5 / limit-refs=2 / limit-modes / weightp / weightb / aq-mode=1 / qg-size=16 / aq-strength=1.00 / cbqpoffs=0 / crqpoffs=0 / rd=5 / psy-rd=1.60 / rdoq-level=1 / psy-rdoq=8.00 / no-rd-refine / signhide / deblock=-2:-2 / no-sao / no-sao-non-deblock / b-pyramid / cutree / no-intra-refresh / rc=crf / crf=18.0 / qcomp=0.80 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.20 Default : Yes Forced : No I bolded the important parts for emphasis. Properties of the .mkv file (and that's without any audio tracks added yet): slower.mkv 9,10 GB (9.775.362.219 bytes) So sure, the quality is top notch, it's hard to tell any differences with the original file grabbed straight from the source media which was about 19.4GB with an overall bitrate of 21.6 Mbps with a maximum bitrate peak of 28/0 Mbps but... A such large file makes it unpractical for archiving purposes, let alone the fact it took no less than 77139 seconds to encode (1285 minutes or 21.43 hours, almost 22 hours!!!). I was understanding that the main interest in x265/HEVC was to allow "high quality" content streaming/delivering/archiving with bitrate starved media/connections? The very same movie in x264 with rather high-end settings weights only about 9.40GB once processed through x264 latest version... oh, and that's with a 2 hours DTS 5.1 track embedded within the matroska container versus here a 9.10 GB file *without* any audio tracks, just the video tracked processed through your settings. What the hell? Edit: Sorry my bad, I meant 9.40GB as x264 encode with audio track; not 6.40GB but with audio track still, versus a x265 encode of 9.10GB and no audio muxed yet. So my point stands still: x265 produced a file larger than x264 would have. Last edited by pingfr; 11th March 2016 at 01:29. |
11th March 2016, 02:07 | #3385 | Link |
Registered User
Join Date: Nov 2012
Posts: 218
|
It takes long to explain, but you are comparing apples to oranges.
first of all, I can definitely give you another combination which is just 50% of the bit-rate. and I can give you another with double bit-rate but even more perfect of quality. I can even give you a third combination which encodes the movie into 1Mbps, but then you'd probably say "x265 produced a worse quality than x264 would have." The point is that except for bit-rate, you must compare the visual quality as well, and the comparison must be rigorous and unambiguous. We are often doing something like this: take the encoded samples with similar bitrate(<5% of difference), then we take ~20 random frames and compare it one by one: 32256 avc -1 16045 hevc 1 33030 hevc 1 20843 tie 0 05108 hevc 1 32023 hevc 1 15225 avc -1 13857 hevc 1 34702 hevc 1 15489 hevc 1 21942 hevc 1 33808 tie 0 29432 avc -1 03147 tie 0 04602 hevc 1 00156 avc -1 22487 hevc 1 33557 hevc 1 32219 avc -1 15616 avc -1 hevc 11 Mean 0.25 avc 6 SE 0.203586268 tie 3 t-value 1.227980663 P-value 89.70% For this one, out of 20 random sampled frames, hevc looks better on 11 frames, its counter part wins 6, and 3 end up indistinguishable. Then some statistical computation tells you that you can say HEVC outperforms AVC in this test with 89.7% sure. This is how we managed to get something better than the default tunings. Without such rigorous benchmarks, nothing can be concluded. |
11th March 2016, 02:15 | #3386 | Link |
Registered User
Join Date: May 2015
Posts: 185
|
Still doesn't change the fact the resulted file size makes it highly unpractical to archive as it is and the main key selling point of HEVC and x265 is "equal quality if not better than x264 at half the size/half the bitrate".
That's clearly not the case here. Would you happen to have a set of parameters which can retain quality pretty well while cutting down on the final target encode file size? Thanks a lot. |
11th March 2016, 02:16 | #3387 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
Quote:
1. Use 10bit x265 v1.9 stable. We have not tested further builds so we don't know what's going to happen. Furthermore, 10bit encoding gives you an unconditional, significant improvement. 2. To implement the above, just download http://www.msystem.waw.pl/x265/x265-...vs2015-AVX2.7z upzip the x265-10b.exe, rename it to x265.exe, replace the one in your C:\Program Files (x86)\MeGUI\tools\x265\x64\x265.exe or whichever you were using as the encoder. 3. try the new combination: -D 10 --preset slower --ctu 32 --max-tu-size 16 --crf 20 --tu-intra-depth 2 --tu-inter-depth 2 --rdpenalty 2 --me 3 --subme 5 --merange 44 --b-intra --no-rect --no-amp --ref 5 --weightb --keyint 360 --min-keyint 1 --bframes 8 --aq-mode 1 --aq-strength 1.0 --rd 5 --psy-rd 1.5 --psy-rdoq 5.0 --rdoq-level 1 --no-sao --no-open-gop --rc-lookahead 80 --max-merge 4 --qcomp 0.75 --no-strong-intra-smoothing --deblock -2:-2 --qg-size 16 --pbratio 1.2 |
|
11th March 2016, 02:20 | #3388 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
Quote:
BTW, never trust those lies telling you that "x265 is equal quality if not better than x264 at half the size/half the bitrate". Out of so much we have tested, for high quality ripping, compared by visual quality, x265 takes ~90% of the bitrate to match up its counter part. If you just use official tunings, it's about ~160%, namely, x264 is equal quality if not better than x265 at half the size/half the bitrate, without highly professional tuning. |
|
11th March 2016, 02:20 | #3389 | Link | |||
Registered User
Join Date: May 2015
Posts: 185
|
Quote:
Quote:
Quote:
Thank you for your time. |
|||
11th March 2016, 02:27 | #3390 | Link | |
Registered User
Join Date: May 2015
Posts: 185
|
Quote:
When you manage a library of 2600 movies like I do for an online public library (legal) every single megabyte worth of shaved off storage space is worth the effort re-encoding everything to x265... only if the yielded results effectively are smaller than their x264 counterpart that is. |
|
11th March 2016, 02:28 | #3391 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
All right, then just use x265-8b.exe. BTW our test was done for 10bit, so it's not going to be the best solution under 8bit.
Quote:
Furthermore, if you really wish to use --crf 18 with our suggestions, use the previous settings. Every individual parameter has its purpose and should work together as a whole. |
|
11th March 2016, 02:37 | #3392 | Link | ||
Registered User
Join Date: May 2015
Posts: 185
|
Quote:
Quote:
Devs have been more or less asked to give us a "table" of what to expect in terms of understanding/equaling/matching CRF values back and forth between x264 and x265. x264 is nearly a decade old, video enthusiasts have been used for the past 10 years to use either 2-pass encoding (inherited from the XviD days and from the DivX days even before that) or use the CRF values from the very earliest x264 days, therefore the x265 devs should know that powerusers are not going to give up on that. Good luck with convincing and explaining those users that crf 18 in x265 isn't equal to crf 18 in x264 and so forth. The day we may see a conversion table added to official docs might actually change that, until then... So which set of parameters should I use with a -D 8 --crf 18 if I would like to retain the same level of quality while cutting on the file size? |
||
11th March 2016, 02:38 | #3393 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
Quote:
2. They are primarily focus on low bit-rate cases like crf=28. You can't even stand crf=20, so their conclusion makes no sense to you. 3. Indeed, the lower the bitrate, the better x265 performs. But that's not for the case of ripping so I'd not continue. |
|
11th March 2016, 02:46 | #3394 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
Quote:
just take the mature, well-recognized x264. try for your film sources: x264 --preset veryslow --crf 19 --tune film --qcomp 0.7 x264 --preset veryslow --crf 16 --qcomp 0.4 --psy-rd 0.2:0 --aq-strength 0.3 guess what? the first encode with --crf 19 will surely looks better than the second --crf 16. Because the 2nd one, the rc parameters combined is so ill-conditioned. Do this test and then think about the case, you can't even seek for consistency within x264, do you expect any consistency across encoders, with another set of highly customized settings? Last edited by littlepox; 11th March 2016 at 02:53. |
|
11th March 2016, 02:51 | #3395 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
Quote:
pretend that you don't know the crf, test about it, and give me your feedback. |
|
11th March 2016, 02:54 | #3396 | Link |
Registered User
Join Date: May 2015
Posts: 185
|
Gotcha.
Just like we did the experiment with a well provisioned --preset slower or --preset veryslow yielding better perceptible results over a "vanilla" un-tweaked --preset placebo. Still, there is something I don't get. I've seen (sadly, pirated) content posted on public and popular peer-to-peer trackers for 2160p contents which was ripped from UHD 4k Blu-Ray discs even and let's say that a 4GB encoded file for an over 2 hours encoded fully action packed-action fast paced movie is... quite impressive. I will not post such links here as I have no interest whatsoever in promoting piracy in any ways/forms/shapes however, I've seen the results myself they are quite... amazing. Should I bother pasting the used parameters here from the file properties? Would this be of any use to you? |
11th March 2016, 03:02 | #3397 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
Quote:
http://forum.doom9.org/showthread.php?t=172458 which used to be an earlier version of our "--tune film" Of cause the probability that we are talking about the same encode is really rare. So I guess it could be: 1. You have not seen the sources. It could be that compared to the sources a lot of details are gone, you just don't know. 2. x265 itself is well-tuned for 4K contents with lower bit-rates. You aren't doing the same thing; you are working on 1080p high bit-rates. 3. They've got their own testing to replace the default tunings. Pls post the mediainfo here, see what I can read out of it. |
|
11th March 2016, 03:04 | #3398 | Link |
Registered User
Join Date: May 2015
Posts: 185
|
There you go:
Video ID : 1 Format : HEVC Format/Info : High Efficiency Video Coding Format profile : @L5@Main Codec ID : V_MPEGH/ISO/HEVC Duration : 2h 8mn Width : 3 840 pixels Height : 1 608 pixels Display aspect ratio : 2.40:1 Frame rate mode : Constant Frame rate : 23.976 fps Color space : YUV Chroma subsampling : 4:4:4 Bit depth : 10 bits Writing library : x265 1.8+167-e951ab673b1c:[Windows][GCC 5.2.0][64 bit] 10bit Encoding settings : wpp / ctu=32 / min-cu-size=16 / max-tu-size=32 / tu-intra-depth=1 / tu-inter-depth=1 / me=0 / subme=0 / merange=57 / no-rect / no-amp / max-merge=2 / temporal-mvp / early-skip / rdpenalty=0 / no-tskip / no-tskip-fast / strong-intra-smoothing / no-lossless / no-cu-lossless / no-constrained-intra / fast-intra / open-gop / no-temporal-layers / interlace=0 / keyint=250 / min-keyint=23 / scenecut=0 / rc-lookahead=5 / lookahead-slices=8 / bframes=3 / bframe-bias=0 / b-adapt=0 / ref=1 / limit-refs=0 / no-limit-modes / no-weightp / no-weightb / aq-mode=0 / qg-size=32 / aq-strength=0.00 / cbqpoffs=6 / crqpoffs=6 / rd=2 / psy-rd=0.30 / rdoq-level=0 / psy-rdoq=0.00 / no-signhide / deblock / no-sao / no-sao-non-deblock / b-pyramid / no-cutree / no-intra-refresh / rc=abr / bitrate=4300 / qcomp=0.60 / qpmin=0 / qpmax=51 / qpstep=4 / ipratio=1.40 / pbratio=1.30 Default : Yes Forced : No Resulted .mkv file size: 4.18 GB (4.494.613.248 bytes) and that's even with a freaking audio AAC track. Last edited by pingfr; 11th March 2016 at 03:08. |
11th March 2016, 03:14 | #3399 | Link | |
Registered User
Join Date: Nov 2012
Posts: 218
|
Quote:
second, they are using --preset ultrafast --bitrate 4300. The lowest preset you can ever set, without any tuning, and a fairly low bit-rate for 4K content. I've done similar test before. The result is that x265-10bit will wash out every film grain or tiny details to give you a clean, blurry video. But after downscaled from 4K to 1080p, you don't feel any uncomfortable as if watching a DVD; you don't see banding/blocking/broken edge neither. This is exactly the power of HEVC-10bit under high resolution, extremely low bit-rates. BUT this has NOTHING to do with 1080p, high-bitrate encoding. |
|
11th March 2016, 03:20 | #3400 | Link | |||
Registered User
Join Date: May 2015
Posts: 185
|
Quote:
Quote:
http://x265.readthedocs.org/en/default/presets.html That's why it was confusing to begin with, that, coupled with the excessively low bitrate of 4300. Quote:
Do you feel it would be possible at this point to find settings for x265 which would result in an encoded 1080p/720p contents weighting 25% less than it's x264 counterpart or am I being delusional here? Edit; Also encoding a shorter movie (1h23m) with the latest settings you gave me 3 posts ago, it seems to encode much faster, ~6 fps versus ~2.4 fps, but then it could be because I switched from a 1920x1040 source to a 1920x800, less data to encode per frame = faster encoding I guess. ETA is: 6 hours. I will let you know the results whenever I get them done. Last edited by pingfr; 11th March 2016 at 03:24. |
|||
|
|