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| Ultra HD or not Ultra HD, this is the problem… |
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Posted by: spoRv - 2016-11-22, 07:46 PM - Forum: Official and unofficial releases
- Replies (1)
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Let's face it: even little blind bugs found in the most remote cave in a forgotten land know that, maybe, it's time to upgrade our video system to Ultra HD (I will not use 4K, as, to me, it's the DCP 17:9 version).
So, what do I think about this? Frankly, after the demise of my beloved full LED 55' HDTV (sigh!) I thought to buy a new UHD TV, but prices were quite high at that moment, and I grabbed an used, nice "small" 42' plasma HDTV... and I was surprised how good it is! Really, anybody could think plasma technology is obsolete, and maybe it is, but hey, quality wise, it's still to be beaten in many fields, even by newest OLED TVs...
Possible solutions:
- Buy now an UHDTV, spending more money that I want to
- Stick with my old 42' plasma HDTV for a while
- Upgrade to a bigger plasma HDTV now (read: 60' or 65'), used, at a great price, waiting for affordable (and improved) OLED or full LED UHDTV
Until few days ago, I thought that UHDTV resolution would be not that important, given the fact that our eyes could not see the difference when is not enough near to the display... but I wanted to prove myself I was right, and I made some tests.
You know what? I was wrong... and happy to discover it! What I understood is that even 4K mastered BD has not the same quality of a real UHD downscaled source - it should be not the case, but it is, sometimes... not all UHD sources are really UHD - do you remember the first HD clips, and the fact many were mere upscales?
Math doesn't lie (usually); it's simply not possible to get a better quality, with an image four times larger, using the same encoder, with an UHD file that has a size only a bit bigger than its HD equivalent; I mean, if the BD of an AVC 1080p encoded movie is, let's say 30GB, IT... IS... NOT... POSSIBLE... to get a better quality AVC 2160p version with a 40GB file...
At the contrary, a well encoded UHD AVC 2160p that has "only" twice the filesize of an HD AVC 1080p (with a 4K master) could squeeze some more details, visible also with a simple HDTV set.
How can I discover if an UHD source could be really better than its HD counterpart?
- size doesn't lie! Just make a comparison of the filesize of the HD and UHD files; the UHD, encoded in AVC, should be at least twice the size of the HD, and, if encoded in HEVC, should be at least the same size - of course, the bigger the better (usually...); also, always check the Kush Gage calculator to discover if its bitrate is good enough.
- master is everything! If the UHD source use a 2K master, it will be simply not possible to have a definition given by a 4K one... if you have a good quality BD version, stick with it.
- read reviews. More than one; read what magazines think of a given title, what forum posts say about it, and, if all say it's great, it *should* be great! But use always your own mind, so, before shell out some cash, just...
- compare, compare, compare! Even if the previous advices are valid, sometimes the best things to do is to watch screenshots from both versions, and compare them - possibly in full screen, using the display where you watch movies... because when you see them zoomed in your 15' laptop screen, and the UHD seems vastly superior, maybe you will discover later that, when watched in your big brand new 55' UHD, sit four meters (about 13ft) away, the difference is not that great...
Well, a picture is worth a thousand words, so here you are some comparison to think about:
Star Wars UHD (fake!) Vs. BD upscaled:
http://screenshotcomparison.com/comparison/191357
http://screenshotcomparison.com/comparison/191359
Godzilla UHD (real!) Vs. 4K mastered BD upscaled:
http://screenshotcomparison.com/comparison/191389
Godzilla 4K mastered BD Vs. UHD downscaled:
http://screenshotcomparison.com/comparison/191391
Conclusions: given the fact that an UHD source has at least a 4K master, and is properly encoded, it *should* be always better even watched on a simple HD TV; so, this is what I think is the best options, from best to worst:
- UHD source, UHD display - not only for resolution, but also for HDR
- UHD source, HD display - difference with HD sources could be quite evident
- HD source, HD display - no need to uspcale (with a 1:1 pixel mapping)
- HD source, UHD display - upscaling "could* degrade the quality
I think I could start to collect UHD movies right now, stick for a while with this old TV of mine, upgrade in the next few weeks to a BIIIG used plasma HDTV, and wait for a great UHD TV, with a new, or vastly improved, technology, at a decent price... I wonder how good could be a laserdisc watched with one of these sets!
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| Poit |
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Posted by: poita - 2016-11-22, 01:28 AM - Forum: Presentation
- Replies (11)
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G'day all,
Poita here, just registered as requested on OT.COM
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| Vic saying hi from London Islington |
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Posted by: Oldibas - 2016-11-20, 04:38 AM - Forum: Presentation
- Replies (4)
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Hi there mates, a BR (Blade Runner, not Battle Royale) nut saying hello here.
I am a budding cinematographer trying to break into the industry, just arrived in London couple months ago after 6 years of wasting my life in other parts of Britain.
Hopefuly I find something interesting here beside my craving for the regraded BR blu-ray.
Would be cool if I could find a FAQ here, if some could help I would appreciate so much.
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| Doctor Who (reboot) |
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Posted by: spoRv - 2016-11-18, 12:47 AM - Forum: Movies, TV shows and other
- Replies (25)
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I followed any episodes of the new series - from Cristopher Ecclestone's doctor ahead - but I missed the last one... so, I took the occasion an rewatch them all during this week - currently in the middle of series 8.
Peter Capaldi is not the best Doctor IMHO - don't know if I preferred Matt Smith or David Tennant... still think he doesn't "fit" the new course of young doctors... maybe he would have fit in the original series! Also, now, episodes are less interesting... can't say he is not a good actor - he's fun, too; maybe it's just the author's fault.
Best episode: "Blink" - and all related "angels".
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| ARQ (2016) |
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Posted by: spoRv - 2016-11-17, 09:58 PM - Forum: Movies, TV shows and other
- Replies (3)
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Never heard before, this little Nexflix sci-fi movie surprised me; almost no special effects, few actors, story not entirely original - read: there were at least two movies and a TV series based on the central idea (can't say more, won't spoiler it); incredibly low budget has no impact on the story itself: quite fast pacing, interesting actors, good dialogs and not so much music, just enough...
Every sci-fi fan - who can stand to watch a movie without space ships or laser sabers - will like it!
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| The Fifth Element Missing Scene |
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Posted by: CSchmidlapp - 2016-11-17, 09:33 PM - Forum: Movies, TV shows and other
- Replies (22)
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I saw it during it's Theatrical Run in England back in 1997, and remember quite clearly that the final shot of the film with Korban Dallas and Leeloo making love in the regeneration tube was a sequence and not just a shot to freeze frame that faded to black.
It had slow, blue lit pans across them in the chamber (nothing gratuitus or showing any offending areas, more arty) It ran with overlaying credits to the song 'Little Light of Love' by Eric Serra.
It sticks with me more because I remember thinking the BBFC (British Board of Film Classification) have been relaxed with it's PG rating for the film as the british were normally pretty prude with such things.
I even got into a discussion on Sex vs Violence and why is it o.k to show people being shot and not having sex in family friendly ratings, but I digress.
Ive searched the internet and nothing.
Is there anybody here who saw it back in the day and can shed some light on this?
Im sure im not going crazy.
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| The Audio Delay Thread |
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Posted by: Chewtobacca - 2016-11-13, 02:25 AM - Forum: Script snippets
- Replies (29)
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I have something of a thing for audio delays. Over the years, I've worked out quite a few. Here are some for starters. If you come up with any more, post them here, and I'll happily update the original post.
Requirements
eac3to
(It's important that you demux BDs with eac3to.)
Applying delays with other audio tools should be possible, but I use eac3to, so I've posted everything in terms of that and flagged the thread accordingly.
Alien (1979)
To sync the standard BD to the UHD BD, apply a delay.
Code: eac3to input output -2002ms
(48 frames)
Demux playlist 00800.mpls. Then remux.
Blade Runner (1982)
The branching disc from the 30th Anniversary Collector's Edition has a different encode (AVC not VC-1) from the original. If you want to sync Buster D/NeonBible's LD PCM (director's cut and international cut) to the new disc, apply a delay.
Code: eac3to.exe input.wav output.wav" +1751ms
(42 frames)
Bram Stoker's Dracula (1992)
This syncs the PCM 5.1 from the 2007 BD to the remastered BD from 2015. (Demux the audio on playlist 00011.mpls of the former with eac3to, applying the delay as you go; then remux with the video on playlist 00001.mpls of the latter.) The same delay-value should work for the UHD BD as well.
Code: eac3to input.pcm output.w64 -1001ms
(24 frames)
Excalibur (1981)
This syncs the lossless audio from the BD to the video of the HD DVD.
Code: eac3to input.dtshd output.dtshd -1001ms
(24 frames)
Fistful of Dollars, A (1964)
This syncs the DE BD (00021.mpls) to the IT BD (00000.mpls).
Code: eac3to input output -22981ms
(551frames)
Before remuxing, slow down the IT BD.
Code: input_bd_structure 1) 2: output.264 -slowdown
Goldeneye (1995)
This syncs the BD to the 4k Netflix WEB-DL.
Code: eac3to input output +7007ms
This syncs the BD to the 4k Amazon re-encode.
Code: eac3to input output +7049ms
Halloween (1978)
This syncs the LD PCM that was synced to the 35th Anniversary BD to the old (pre-2019) DE BD. (I prefer its colors.)
Code: eac3to input output +15012ms
(360 frames)
Laputa: Castle in the Sky (1986) AKA The Flying Island
This syncs the 24-bit audio on the US BD to the superior video on the first JP BD and the disc that is in the boxset called The Collected Works of Hayao Miyazaki.
Code: eac3to input output -792ms
(19 frames)
Legend (1985)
This syncs the US BD to the UK BD (director's cut for both, of course) so you can add the DTS-HD MA 5.1 to the AVC-encoded UK video. The relevant playlist for both discs is 00801.mpls.
Code: eac3to input output +959ms
(23 frames)
Licence to Kill (1989)
This syncs the BD to the 4k WEB-DL.
Code: eac3to input output +7925ms
Nausicaä of the Valley of the Wind (1984)
US (Disney) BD
This syncs the 24-bit audio on the US (Disney) BD to the superior video on the first and second JP BDs.
Code: eac3to input output -11217ms
(269 frames)
R1 DVD
1. This syncs the R1 DVD with the first and second JP BDs.
Code: eac3to input output -12218ms
(293 frames)
2. This syncs the R1 DVD with the US BD.
Code: eac3to input output -1001ms
(24 frames)
Spartacus (1960)
To sync the commentaries on the Criterion Collection DVD to the 55th Anniversary Restored Edition BD (Region A -- though they should all be the same), rip the DVD with AnyDVD, demux the disc with PGCDemux, decode tracks AudioFile_82.ac3 and AudioFile_82.ac3 to WAV with eac3to, and apply the following script to each in turn:
Code: audio=
\WavSource("filename.wav")
dub =
\AudioDub(
\BlankClip(audio,fps=24000,fps_denominator=1001,width=720, height=480),
\audio
\)
sync=
\Dissolve(
\Trim(dub,226,215875),
\Trim(dub,215857,0),
\4)
return sync
You can use NIcAC3Source() instead of converting to WAV with eac3to. The idea is not to achieve 100% frame accuracy, just to make a one-size-fits-both adjustment. At worst, the result is a frame out at times, nothing that would affect the commentary.
Star Trek: The Motion Picture (1979)
After correctly slowing down the Sky HDTV cap with eac3to, apply the following delay to sync the BD tracks.
Code: eac3to input output -102603ms
(2460 frames)
Both the BD and the cap are the theatrical cut.
Star Trek II: The Wrath of Khan (1982)
Blu-rays
This syncs the 2009 BD to the 2016 one. Demux playlist 00800.mpls (the theatrical cut) of the new BD with eac3to. Then remux.
Code: eac3to input output +834ms
(20 frames)
Synchronizing the R1 DC DVD to the Sky HDTV Broadcast
After correctly slowing down the Sky HDTV cap of the DC with eac3to, you need apply only a negative delay (and account for the +4ms delay with which the DVD's tracks are flagged).
Code: eac3to input output -1747ms
(-42*41.7ms=-1751.4ms)
-1751+4ms=-1747ms
Star Trek II: The Search for Spock (1984)
The Sky HDTV cap is missing three frames from the BD; consequently, an initial delay is not sufficient to achieve perfect sync. First, demux the BD with eac3to, decoding the audio to w64 as you do so. Secondly, install AviSynth+ and apply the following script.
Code: LoadPlugin("NicAudio.dll")
aud=RaWavSource("file.w64",1)
bd=
\AudioDub(
\BlankClip(aud,fps=24000,fps_denominator=1001,width=720, height=480),
\aud
\)
sync =
\Dissolve(
\Trim(bd, 71, 26593 ),
\Trim(bd, 26593, 50000 ),
\2) ++
\Dissolve(
\Trim(bd, 50001, 53510 ),
\Trim(bd, 53510, 80000 ),
\2) ++
\Dissolve(
\Trim(bd, 80001, 81435 ),
\Trim(bd, 81435, 151303 ),
\2)
return sync
Render with VirtualDub2. You can find NicAudio.dll in BeHappy's plugins32 directory.
Star Trek IV: The Voyage Home (1986)
After correctly slowing down the Sky HDTV cap with eac3to, apply the following delay to sync the BD tracks.
Code: eac3to input output -3754ms
(90 frames)
Star Trek V: The Final Frontier (1989)
After correctly slowing down the Sky HDTV cap with eac3to, apply the following delay to sync the BD tracks.
Code: eac3to input output -4546ms
(109 frames)
Star Trek VI: The Undiscovered Country (1991)
After correctly slowing down the Sky HDTV cap with eac3to, apply the following delay to sync the BD tracks.
Code: eac3to input output -2002ms
(48 frames)
Both the BD and the cap are the theatrical cut.
Star Trek: Generations (1994)
After correctly slowing down the Sky HDTV cap with eac3to, apply the following delay to sync the BD tracks.
Code: eac3to input output -4296ms
(103 frames)
Terminator 2 (1991)
Geneon
This syncs the JP Geneon BD to the 2015 BD.
Code: eac3to input output +917ms
(22 frames)
Skynet
This syncs the Skynet BD to the 2015 BD.
Code: eac3to input. output -2002ms
(48 frames)
Top Gun (1986)
This syncs the 2008 US BD and 2009 EU/UK BD to the 3D BD.
Code: eac3to.exe input output +5921ms
(142 frames)
Demux playlist 00800.mpls with eac3to (i.e. extract the left-eye stream); then remux.
Total Recall (1990)
This syncs anything on the UK Ultimate Rekall Edition (= US Mind-Bending Edition) to the first UK BD (from Optimum).
Code: eac3to.exe input output -2294ms
(55 frames)
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