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Script snippets subforum |
Posted by: Feallan - 2016-11-12, 06:53 PM - Forum: Script snippets
- Replies (3)
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This subforum is intended to be an easily searchable collection of scripts that do something. Could be anything related to A/V editing that's done using a series of text commands rather than a graphical interface.
To keep things manageable:
1. Each script must have its own thread with a descriptive name.
2. Each thread must have a prefix (you choose it from a list next to a field with thread name), which describes the piece of software your script is for. E.g. Avisynth
3. Inside each thread, write up what the script does, what it requires, how it is intended to be used etc. and then post the contents of the script using a "code" tag:
Code: Script body goes here
4. If your script is long and contains indents (\t), you should attach a file to your post instead
5. If your thread gets a lot of replies that made you change something in your script, update your original post and include information what was changed and why
Thread prefixes available now are AviSynth, eac3to, FFmpeg, x264, x265, Other. I couldn't think of any more, if you can, please post your suggestions here
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tim_p from UK saying hi |
Posted by: tim_p - 2016-11-07, 09:42 PM - Forum: Presentation
- Replies (6)
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Hi!
Lurker and occasional poster on lddb (not for a while) and OT (likewise) and blu-ray.com. Have always been interested in original soundtracks over revisionist nonsense and the golden/silver age of surround sound technology. Got really brave and bought an M-Audio soundcard last year to attempt some ld captures and never got round to installing it and sold it on! Real life means it'll be more of the low profile from me but I like to offer the occasional opinion, bit of research and so on.
To all those doing - keep up the good work!
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lossless codecs problem |
Posted by: spoRv - 2016-11-06, 02:28 PM - Forum: Converting, encoding, authoring
- Replies (7)
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I'm "back in business" in the last few days; trying to encode some pending projects, I had a lot of troubles - encoding crashes, stops at different frames etc.
I strongly suspect Lagarith is guilty; in particular, using more than one istance could be the problem... for example, I tried to save a project with it, using two sources encoded with the same codec - so, two Lagarith in, one Lagarith out... and it stops everytime; also, two Lagarith in, one X264 out do the same... trying to solve the problem saving those with other codecs - the LD with Huffyuv, the HD-DVD with MagicYUV, then I will try to encode the final project both in Lagarith and X264, and see what will happen - if Lagarith will fail, the problem lies in the codec itself, if also X264 will fail, problem is somewhere else, but where?
Let's wait until the final encoding...
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The Thing [spoRv] v2.0 |
Posted by: spoRv - 2016-11-06, 04:10 AM - Forum: Archived projects
- Replies (76)
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IMPORTANT UPDATE: Project released under the new [Fundamental Collection] label - please visit https://fanrestore.com/thread-1348.html and post your comments there, thanks!
The Thing (1982) [special preserved or Restored version] v2.0
Project mission: restore John Carpenter's The Thing video to be closest to the theatrical version as could be possible at the present day, using the best video source chosen from all the various available versions; adding the best original and remastered audio soundtracks in different languages.
Video sources: HD-DVD Scream Factory BD, Laserdisc as color reference.
Audio sources: uncompressed PCM soundtracks captured directly from Laserdiscs; AC3 soundtracks from DVD; DTS soundtracks from BD.
Subtitles sources: from BD.
The Thing [spoRv] v2.0
Source Material
Video:
- La Cosa (The Thing) - PAL IT DVD - just for color reference where LD has fades
Audio:- The Thing (Signature Collection) - NTSC US laserdisc CLV/CAV - English soundtrack PCM 2.0 (original)
- The Thing (letterbox edition) - NTSC US laserdisc CLV - English soundtrack PCM 2.0 (changed)
- The Thing - PAL France laserdisc CLV - French soundtrack PCM 2.0
- The Thing - 1998 US DVD - English commentary AC3 1.0
- La Cosa (The Thing) - 1998 PAL IT DVD - Italian soundtrack AC3 2.0 (changed)
- La Cosa (The Thing) - 1998 PAL IT DVD - Spanish soundtrack AC3 1.0 (changed)
- The Thing - UK BD - English soundtrack DTS-HD MA (new remix)
- The Thing - UK BD - French soundtrack DTS 5.1 (new remix)
- The Thing - UK BD - Italian soundtrack DTS 5.1 (new remix)
- The Thing - UK BD - German soundtrack DTS 5.1 (new remix)
- The Thing - UK BD - Spanish soundtrack DTS 2.0 mono (new remix)
Subtitles:
english, italian, french, spanish, german from the BD.
Capture setup & processing info
Hardware:- Pioneer DVL-909 PAL/NTSC laserdisc/DVD player
- Sony Vaio VGX-XL201 PC CPU Core 2 Duo E6300 1.86Hz, 3GB RAM, 32GB+2TB+4TB HDDs, BD-RE
- AverMedia BDA A16C internal video card (with Philips SAA713x chipset)
- Western Digital Elements 1TB external USB HD
- Microsoft XBOX360 HD-DVD player
- Monster Cable S-Video 5pin cable (very high quality)
- SONY optical S/PDIF cable (very high quality)
- no-brand coaxial cable (very high quality)
Software:- VirtualDub as capture software
- VirtualDub and AviSynth for video editing
- AviSynth + SoundOut and Foobar2000 for audio conversions
- tsMuxeR and AVIdemux for muxing/demuxing
Settings:- laserdisc video captured at card native resolution 720x576 @25fps (PAL), YUV Lagarith lossless compression
- PCM digital audio from Laserdisc to PC via S/PDIF bit-perfect 16bit 44.1KHz stereo
Project status: RELEASED on 2017-03-05
Video sources and processing:
HD-DVD VC-1 BD AVC and DVD MPEG2 are converted using the Lagarith lossless compression (YV12); laserdisc video is captured using the Lagarith lossless compression (YUY2).
HD-DVD BD is used as frame reference (so no frames are cut or duplicated); it's simply converted to lossless with not further processing.
PAL UK laserdisc is used as primary color reference: it's captured using AviSynth at its original resolution of 720x576@25fps; then frame rates is changed to 23.976; a rainbow remover is applied to the capture, along with mild noise reduction to get rid of eventual dropouts; at the end, video is upscaled to 1920x816 and frames are cut or duplicated to match the HD-DVD BD video.
PAL IT DVD is used as secondary color reference, just to replace two laserdisc fades: it's converted to lossless; then frame rates is changed to 23.976; at the end, video is upscaled to 1920x816.
After a lot (and when I mean a lot, I mean A LOT) of tests, the video will be treated as following:- opening credits (up to "Antarctica, winter 1982") are taken untouched from HD-DVD BD video, because there is no need for color regrading, as the flying saucer and earth colors are almost the same of the laserdisc/DVD - for the end credits, from the last image of the movie, BD is used, but with zero saturation, because it has a lilac dominance
- the rest of the movie is regraded using the HD-DVD BD as source, and laserdisc as color reference; avisynth script ColourMatch is used
- except the laserdisc side 1 end / side 2 beginning scenes, as they have fade out / fade in, were not possible to be used, so I used the DVD there for color reference, tweaked a little bit to be as close as possible to the laserdisc
Then, the result video is saved as lossless, to be converted to lossy AVC for the final Blu-Ray.
Audio sources and processing:
PAL FR LD is captured (thanks to ilovewaterslides); then converted to 48KHz; as LD video frames are cut or duplicated to match the HD-DVD video, audio is adjusted accordingly to be in sync with the HD-DVD video.
NTSC US LDs are captured and processed to be in sync with the HD-DVD video (thanks to Jonno); the letterbox LD is converted to AC3.
PAL IT DVD italian, spanish and english commentary AC3 soundtracks are demuxed, then converted to PCM to be processed; as DVD video frames are cut or duplicated to match the HD-DVD video, all the soundtracks are adjusted accordingly to be in sync with the HD-DVD video; the resulted tracks are then reconverted to AC3 to be BD compliant.
UK BD english DTS-HD MA, french, italian, german DTS 5.1 and spanish DTS 2.0 (mono) are used as they are (thanks to Jonno)
Final format: BD-25
Video:- letterbox 2.35:1 1920x816 pixel inside the 16:9 1920x1080 pixel FHD frame, AVC (x264) 23.976fps, average bitrate 18500kbps
Audio:- english PCM 2.0 16bit 1536kbps - from NTSC Signature Collection LD
- english AC3 2.0 16bit 384kbps - from NTSC letterbox LD
- english DTS-HD MA 5.1 24bit 3900kbps (1536kbps core DTS) - from UK BD
- french PCM 2.0 16bit 1536kbps - from PAL french LD
- french DTS 5.1 24bit 768kbps - from UK BD
- italian AC3 2.0 16bit 192kbps - from PAL IT DVD
- italian DTS 5.1 24bit 768kbps - from UK BD
- spanish DTS 2.0 24bit 384kbps (mono) - from UK BD
- spanish AC3 1.0 16bit 96kbps - from PAL IT DVD
- german DTS 5.1 24bit 768kbps - from UK BD
- commentary AC3 16bit 1.0 96kbps - from PAL IT DVD
Subtitles:
english (full and SDH); french, italian, spanish, german (full and forced) from UK BD
Special thanks to:
Jonno, for english laserdisc, all BD soundtracks, missing frames, and A LOT OF HELP!!! Without you, this project could not be the same! THANK YOU VERY MUCH!
Other credits:- The Aluminum Falcon for the HD-DVD video
- zeropc for DVD english soundtrack and commentary
- ilovewaterslides for the PCM french soundtrack
- Namtar for the isolated score
- Jetrell Fo for general supporting and encouragement
- MrBrown for German and Spanish tracks
- everyone who showed interest and appreciation
Cover:
Blu-ray custom cover
![[Image: The_Thing_spo_Rv_BD_25_mini.jpg]](https://s13.postimg.cc/591d0ev07/The_Thing_spo_Rv_BD_25_mini.jpg)
Full resolution, ready to print: outside cover - inside cover - disc label
Screenshot comparisons (top spoRv 2.0, middle LD, bottom BD):
Notes:
- v2.0 will use the new Scream Factory BD, due to its higher resolution and visible film grain in comparison to the HD-DVD used for the previous version; the upgrading aiming to improve the color regrading quality, and of course will benefit of the superior source resolution; audio and subtitles are the same.
- updated project info accordingly
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Why laserdisc soundtracks are better… |
Posted by: spoRv - 2016-11-03, 07:24 PM - Forum: General technical discussions
- Replies (7)
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...than most of the DVDs - and few BDs, as I read also in some forums. I don't want to talk about MUSE laserdisc audio now, because I'm not expert in that branch, but whoever wants to talk about it, is welcome!
OK, let's start!
NTSC laserdiscs could contain a different combination of soundtracks: - two mono analog
- one stereo analog
- two mono analog + two mono PCM
- two mono analog + one stereo PCM
- one stereo analog + two mono PCM
- one stereo analog + one stereo PCM
- AC3 + one mono analog + one stereo PCM
- DTS + one stereo analog
I'm pretty sure there is no AC3 laserdisc with two mono digital soundtracks, as PCM is used for stereo (surround) soundtrack, and there are almost no DTS laserdisc with two mono analog soundtracks (Mortal Kombat is an exception), as analog is used for stereo (surround) soundtrack, but I'm sure there are NO laserdiscs that contain both DTS and AC3 soundtracks!
Things are easier for PAL laserdiscs:- two mono analog (on laservision)
- one stereo analog (on laservision)
- two mono digital
- one stereo digital
- DTS (well, only one title ever released!)
The PAL laservision is practically another standard, as PAL laserdisc video could be watched on old laservision player, but digital soundtracks could not be heard! The contrary is usually not true, as the most part of the PAL laserdisc players could also play analog soundtracks. There are NO AC3 PAL laserdiscs!
Now, let's take a closer look at the different soundtrack types:
ANALOG
Albeit analog soundtrack on laserdisc is the worst of the possible ones that could be found on it, the quality is pretty good - here you are some numbers:- Frequency response: 20-20000hz (±3dB)
- Signal-to-noise ratio (CX off): >50dB (up to 58dB)
- Signal-to-noise ratio (CX on): >62dB (up to 74dB)
- Channel separation: >50dB
Not that bad, uh? Better than vynil, audio cassette, second only to VHS HiFi Stereo. It could contains also surround sound; some concerts could be found only on analog laserdiscs, as they are never released with digital audio; the most part of japanese bilingual laserdiscs have the japanese language recorded onto the analog soundtrack... why? Maybe because it sounds better? The answer is yours...
PCM (Pulse Code Modulation)
The first (and most used) digital soundtrack that appeared on the laserdisc format was PCM, stereo or dual mono, 16bit 44.1KHz 1441kbps - it has the same technical specifications and quality of the CD-audio.- Frequency response: 4-20000hz (±0.1dB)
- Signal-to-noise ratio: 96dB - up to 117db (EIAJ)
- Dynamic range: 96dB - up to 99dB (EIAJ)
- Channel separation: 80dB - up to 90dB (EIAJ)
- Wow & Flutter: <0.001% (EIAJ)
All the PAL laserdiscs after the end of 1980s have digital audio; NTSC continued to have both analog and digital soundtracks, as the standard allowed it; several surround types could be found on laserdisc, not only the famous Dolby Surround, but also DTS Surround, UltraStereo, CHACE surround.
AC3 (Dolby Digital)
The first AC3 laserdisc was "Clear and Present Danger" and was released in 1995; the AC3 soundtrack is stored in the right analog channel, and is RF modulated; to be decoded, a laserdisc player with the AC3 RF output is needed, and must be connected to an RF demodulator and a Dolby Digital decoder, or to an amplifier with built-in RF demodulator and DD decoder.
The AC3 soundtrack has always the 384kbps bitrate at 48KHz, almost always 20bit 5.1 channels, but in some (rare) cases the number of channels could vary - usually during extra material like making of, documentary etc.
I found no proof (until now), but there are clues that the theatrical mixes are used for AC3 laserdisc soundtracks "as is"; in fact, many argue that laserdisc Dolby Digital sounds better than the DVD counterpart, also if the latter has an higher bitrate; indeed, most DVD DD soundtracks are mixed taking in account home users, and they should sound good with any kind of audio configuration, and hence it's a sort of compromise - that's why, to avoid this, some titles offered both multichannel and stereo Dolby Surround encoded tracks. At the contrary of DVD that almost always use near field mix, laserdisc usually use the same DTS theatrical far field mix, and has that "in your face" sound typical of theaters.
Someone could think that is not possible, as the theatrical AC3 soundtrack is 320kbps, while laserdisc has 384kbps... think that the LD AC3 is stored on analog form, and surely the signal contains some sort of stronger error correction, due to the fact that analog reading is not perfect; also, it is possible that the signal is simply padded from 320kbps to 384kbps, as it was more economic to take the theatrical mix and copy to laserdisc than remake a home version...
DTS (Digital Theater System)
The first DTS laserdisc was "Jurassic Park" and was released in 1997; DTS soundtrack takes the place of the PCM soundtrack, leaving free two analog tracks, (almost) always used for the movie soundtrack, allowing the owner of an old analog-only player, or who has not a DTS decoder, to listen to it. To be decoded, a laserdisc player with digital output is needed, and a DTS decoder, or an amplifier with built-in DTS decoder.
As the DTS soundtrack is in place of the PCM one, it has the same technical data, 16bit 44.1KHz 1441kbps but, at the contrary of the PCM two channels, it has 5.1 discrete channels.
The laserdisc DTS soundtrack IS NOT the same of the theatrical one: in fact, in theaters, DTS uses a different codec, APT-X, encoded as ADPCM at 882kbps and recorded on CD-ROMs, with a compression of 4:1, while DTS on laserdisc uses Coherent Acoustics perceptual coding compression scheme, encoded at 44.1KHz with a bitrate of 1235kbps (incapsulated at 14bit 44.1KHz, padded to 16bit, to lower the white noise, when playing the track without a decoder, by 12dB) and a compression of 3:1. Hence, the DTS laserdiscs should be better than the theatrical DTS, as the home codec is newer and better, and bitrate higher with less compression.
As almost all DTS DVD have the so-called "half bitrate" soundtracks (754kbps padded to 768kbps) instead of full bitrate (1509kbps padded to 1536kbps), the laserdisc DTS soundtracks is always better than "half bitrate" DTS DVD; in some cases, could be preferable to full-bitrate DTS DVD due to different mixes used.
[added on 2016/11/03]According to many posts written by Disclord (R.I.P.) on LDDB forum, very often the DTS LD used a 18 bit masters (and sometimes 20 bit), while the AC3 LD often used 16 bit masters (but 18 bit too; dunno about 20 bit, though); also, surround channels on the first year or two after the introduction of DTS laserdiscs are mixed +3dB louder.[end]
CONCLUSIONS
Using a laserdisc soundtrack for preservation purposes is often a good choice; when the DVD or BD soundtracks are of low quality, or technically inferior, or "improved"; when the DVD or BD soundtracks have different formats; when the DVD or BD have no soundtrack in a certain language; or, simply, when there are no DVD or BD of a certain title or version at all!
There is only a price to pay: capturing and converting laserdisc soundtracks is an HARD task... but really rewarding! - just finished JP2 AC3 and DTS, I know what I'm talking about... (^^,)
EDIT 2018-04-24:
Found this interesting webpage, and this paragraph in particular:
Quote:This paper presented listeners with a choice between high-rate DVD-A/SACD content, chosen by high-definition audio advocates to show off high-def's superiority, and that same content resampled on the spot down to 16-bit / 44.1kHz Compact Disc rate. The listeners were challenged to identify any difference whatsoever between the two using an ABX methodology. BAS conducted the test using high-end professional equipment in noise-isolated studio listening environments with both amateur and trained professional listeners.
In 554 trials, listeners chose correctly 49.8% of the time. In other words, they were guessing. Not one listener throughout the entire test was able to identify which was 16/44.1 and which was high rate [15], and the 16-bit signal wasn't even dithered!
That's why we all love so much laserdisc PCM soundtracks...
EDIT 2018-04-27:
I think this info could be useful:
disclord Wrote:NEVER listen to a non-encoded disc with CX on - its not been properly encoded for the CX noise reduction and will not sound right. It's not there to be used on non-CX'd discs. However, an analog CX disc can be listened to without CX decoding - that was one of the design goals, that it not sound noticably weird when not decoded - it will just have more background/disc noise. Every digital title that has the analog soundtrack duplicating the digital has CX - discs with commentary/bilingual/AC-3 discs do not have CX (some are improperly auto encoded with it though, sadly). DTS discs with analog stereo tracks are all CX. CX requires that the two encoded channels be related, i.e. stereo or mono, to decode correctly, thus incorrectly encoded commentary/bilingual are not in CX compliance. (found here: http://forum.lddb.com/viewtopic.php?f=12&t=1148)
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