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Type: Posts; User: Sharc
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- Replies: 5
- Views: 292
- Forum: Camcorders (DV/HDV/AVCHD/HD)
- by Sharc
Here's the manual
https://www.sony.co.uk/electronics/support/camcorders-tape-camcorders/dcr-trv110e/manuals
on page 10:
Your camcorder records and plays back pictures
in Digital8 system. Also, your camcorder plays
back tapes recorded in the Hi8 /standard 8 (analog) system. -
- Replies: 5
- Views: 292
- Forum: Camcorders (DV/HDV/AVCHD/HD)
- by Sharc
@satimis
And check out your old threads where many of your questions have been adressed.
For example, see here (links are from former replies):
https://transfervideotapes.com/digital8-camcorders-with-8mm-and-hi8-playback/
https://www.sony.com/electronics/support/articles/00025041
https://www.sony.com/electronics/support/articles/00026519
P.S.
In case you forgot you can find your former threads here -
- Replies: 1
- Views: 368
- Forum: Newbie / General discussions
- by Sharc
Principle:
Downscale the video, then upscale it back and compare this with the original (best by interleaving). If you see no difference when stepping through the interleaved frames then the true resolution is the downscaled version.
Try something like this in Avisynth (for progressive source):
LWLibavVideoSource("your source")
a=last
dx=854 #downscaled horizontal dimension
dy=480 #downscaled vertical dimension
taps=31 -
- Replies: 24
- Views: 1,117
That's what the player is putting out. Internally the player use a composite character generator ...[/QUOTE]
Interesting. Nevertheless one can get a similar checkerboard effect on the video with poor S-Video cables causing crosstalk between the Y and C wires. -
- Replies: 24
- Views: 1,117
It is most likely caused by a poorly screened S-Video cable which "converts" S-Video to composite by its crosstalk between the Y an C wires. As there is no luma/chroma separating filter in the S-video path one gets the dotcrawl, similar as known from (poor) composite. Hence a poor S-video cable clearly spoils the benefit of S-Video.
See my explanations here:
https://forum.videohelp.com/threads/403635-Panasonic-DVD-recorder-passthrough-settings-(DMR-ES10-DMR-ES15-DMR-ES25)/page12#post2714801
https://forum.videohelp.com/threads/411872-SCART-to-S-Video-adapter-strange-problems#post2708738
In the composite setup you have a Y/C separating filter (comb filter) in the loop which makes the composite capture look better than the spoiled S-video with the cheap cable.
Bottom line: Replace the crappy S-video cable by a decent one, and don't make it longer than needed (up to ~3...5 feet is normally ok for a well screened cable). -
- Replies: 5
- Views: 465
- Forum: Video Conversion
- by Sharc
3 cases:
(a) Speed up (runs slightly faster, 25/24, 4.2%)
Films on PAL DVDs are often just speed up from 24fps to 25fps. Encoded and flagged as interlaced for PAL DVD spec compliance, but the video is actually progressive and can be processed as progressive because both fields are from the same film frame (same moment in time)
(b) Telecine (keeps original run time)
If telecine is used for the speed conversion 24fps -> 25fps it will be using 2:2:2:2:2:2:2:2:2:2:2:3 pulldown (aka "Euro pulldown"). It can be IVTCed by
TFM().TDecimate(cycle=25)
to return the original 24fps progressive film frames. -
- Replies: 5
- Views: 465
- Forum: Video Conversion
- by Sharc
It is 2-3 telecined. You should IVTC (Inverse Telecine) rather than deinterlace the video to get the original progressive film frames back.
In Avisynth:
TFM().TDecimate()
or use a GUI which has IVTC as an option.
If it is soft telecined your player has just to ignore the pulldown flags. -
- Replies: 15
- Views: 1,440
- Forum: Newbie / General discussions
- by Sharc
See my last example in post#14. It produces a 1440x1080 4:3 frame. Small black borders will be added according to your cropping to make it overall 1440x1080, undistorted picture in a 4:3 canvas, compliant with your (1), (2), (3) above.
(Maybe select Auto adjust 'height to mod 4' to be on the very safe side.) -
- Replies: 15
- Views: 1,440
- Forum: Newbie / General discussions
- by Sharc
If you deinterlace you can apply resizing, for example to 1440x1080 -
- Replies: 15
- Views: 1,440
- Forum: Newbie / General discussions
- by Sharc
If you want to leave it anamorphic: -
- Replies: 15
- Views: 1,440
- Forum: Newbie / General discussions
- by Sharc
For square pixel output with your cropping and no vertical resizing because your capture is interlaced: -
- Replies: 3
- Views: 557
- Forum: Newbie / General discussions
- by Sharc
- Improper Proc-amp or video levels settings during capture
- Wrong level conversion (expansion) applied, like limited (TV) to full range (PC)
- Poor capture device
- Something wrong with the DVD recorder (unlikely)
- Improper camera settings (problem would have been baked onto the tape)
- a combination of above ....
There is no way in recovering clipped brights. Maybe a little improvement by tweaking the levels (Avisynth, NLE or similar) should be doable. -
- Replies: 10
- Views: 648
FWIW another blast from the past:
http://oldcomputers.net/
https://www.lemon64.com/game/borrowed-time -
- Replies: 25
- Views: 1,240
- Forum: Video Conversion
- by Sharc
Compare with my file in post#20. Still prefer KISS? ;)
P.S. My resizing to square pixels is based on the assumption that the OP's original capture had a PAR of 10/11 (standard NTSC tape capture, 720x480@PAR 10/11). He cropped the sidebars (-> 704x480) which doesn't change the PAR, so still PAR=10/11. His "AI processing" upscaled the cropped picture 2x (=1408x960), which doesn't change the PAR, so still PAR=10/11. That's his intro_short.avi of post#5. I cropped it to 1404x742 to remove the top/bottom bars and side crud, which still doesn't change the PAR. Converting 1404x742@PAR 10/11 to square pixels with height 1080 gives a width of 1858, so 1858x1080 square pixels eventually padded on the sides to make it 1920x1080 overall, square pixels. -
- Replies: 25
- Views: 1,240
- Forum: Video Conversion
- by Sharc
So how does the OP's avi (attachment to post #5) look, following your recipe above (not for DV, exception noted)? He wanted it 1920x1080 btw.
The OP will be grateful for a KISS after all the explanations he got :)
Edit:
FWIW here the result of my script in post#8 (same you would get with Hybrid) -
- Replies: 25
- Views: 1,240
- Forum: Video Conversion
- by Sharc
It's just unfortunate that - for good technical reasons - neither analog consumer tape captures nor DV nor DVD are square pixel formats. So even for "go simple, go square" one should have a basic understanding of cropping and resizing to do it correctly. This includes using GUIs correctly. Even more so for interlaced footage. -
- Replies: 25
- Views: 1,240
- Forum: Video Conversion
- by Sharc
Continue reading and studying. You need to understand the principle of square pixels and non-square pixles, and their relation as DAR=SARxPAR, with
DAR: Display Aspect Ratio (e.g. 4:3, 16:9, ....)
SAR: Storage Aspect Ratio = frame width/frame height (e.g. 720/480, 704/480, 1920/1080, ....)
PAR: Pixel Aspect Ratio (e.g. 8/9, 10/11, ....)
Remember:
- Out of these 3 (DAR, SAR, PAR) one can only freely select 2, the 3rd is then given! (btw. Hybrid solves a possible conflict automatically)
- Cropping and/or Padding does not change the PAR, but changes the DAR
- Resizing (except linear zooming) changes the PAR -
- Replies: 6
- Views: 606
- Forum: Video Conversion
- by Sharc
Thank you!! Giving it a try as we speak. is this output normal?
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #1539 at 51.3513 is still interlaced dup=1 drop=0 speed=5.51x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3087 at 103.003 is still interlaced dup=1 drop=0 speed=5.27x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3088 at 103.036 is still interlaced
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3148 at 105.038 is still interlaced dup=1 drop=0 speed=5.23x
[Parsed_fieldmatch_1 @ 0x557130774180] Frame #3149 at 105.072 is still interlaced[/QUOTE]
The source has few hiccups I think. The result should nevertheless be "ok" I would assume. Check it. -
- Replies: 6
- Views: 606
- Forum: Video Conversion
- by Sharc
In ffmpeg try
ffmpeg -i "output.mkv" -an -c:v libx264 -preset slow -crf 18 -pix_fmt yuv420p -vf fps=30000/1001,fieldmatch,yadif=deint=interlaced,decimate "IVTC_.mp4" -
- Replies: 25
- Views: 1,240
- Forum: Video Conversion
- by Sharc
Crop slightly into the pictures, something like
AVISource("intro short.avi")
crop(2,122,-2,-96) #1404x742
Spline36Resize(1858,1080) #square pixels assuming source PAR 10/11
Addborders(32,0,30,0) #pad to 1920x1080
in Hybrid (you can crop as you like and keep only a part of the top/bottom borders if you don't want to crop into the picture) -
- Replies: 25
- Views: 1,240
- Forum: Video Conversion
- by Sharc
That's a different story...
In Avisynth
AVISource("intro short.avi")
crop(2,116,-2,-96)
Spline36Resize(1844,1080) #square pixels, assuming source PAR 10/11
Addborders(38,0,38,0) #pad to 1920x1080
Do accordingly in Hybrid -
- Replies: 4
- Views: 745
- Forum: Restoration
- by Sharc
Try something like
AVISource("bear.avi")
converttoYV16()
MCDegrainSharp() #or tweak Temporaldegrain2(....), the flicker is mostly in the U plane
# ... you may want to add some chroma sharpening here ... -
- Replies: 29
- Views: 2,107
- Forum: Video Conversion
- by Sharc
768x576 including the borders[/quote]
If the image is 720x576 (704x576 + borders) and the PAR should be 12:11, then with a PAR of 1:1 it should be 786x576.[/QUOTE]
Yes, for a capture of analog video the PAR is ~12/11 for PAL. Including the side borders makes the frame 12/11x720=786 wide, and the DAR becomes 786/576=1.36 rather than 1.333....
A commercial or self-made DVD may have a different PAR though following the DVD standard rather than Rec601. DVD doesn't even specify the PAR explicitely, but only the DAR (like 4:3, 16:9), and many 4:3 DVDs play the active picture 2.3% squashed.
I don't know what ALL devices do, however, if they follow Rec.601 for the capturing of analog video the sampling frequency must be 13.5MHz, which for PAL results in a PAR of 59/54 (aka ~12/11 or 1150/1053) even though some devices may crop into the picture or add any borders. Cropping and padding do not change the PAR. However, if the devices apply some internal resizing or use some odd proprietary sampling frequency the PAR will change accordingly.
(PAR=Pixel Aspect Ratio). -
- Replies: 22
- Views: 2,227
No manipulation? As "color-under" technique using a low-frequency subcarrier is used in consumer videotape recording, the chroma has to be upconverted (heterodyned, mixed) to the PAL or NTSC color subcarrier upon playback for outputting it on the C wire to make it TV compliant, as far as I know. So even for S-Video (Y/C) there is some signal manipulation.
The difference between S-Video and Composite is that for Composite the Y (=luma+sync) and C signals are eventually summed onto 1 wire (yellow RCA = Y+C) by frequency-interleaving (preferably) requiring separation by some filtering for decoding, while separate Y/C on the 2 wires for S-Video do not depend on a subsequent (never perfect) luma-chroma separating filter. -
- Replies: 30
- Views: 2,172
- Forum: Video Conversion
- by Sharc
FWIW trying sample2.mkv using DGTools/NVidia seems to cope reasonably well with the blinds
LWLibavVideoSource("D:\Temp\skh\sample2.mkv")
assumeTFF()
DGTelecide(mode=0,show=false)
DGDecimate(cycle=5,keep=4,show=false) -
- Replies: 5
- Views: 1,124
- Forum: Video Conversion
- by Sharc
You may play with ColorYUV() in Avisynth, something along the line
colorYUV(gain_u=-0.0,gain_v=65.0,off_u=0,off_v=-50,cont_v=200, cont_u=100,autowhite=false,autogain=false)
(You can do similar with your RGB filters though, or ColorMill in Vdub .....)
or sometimes grayscale is an option -
- Replies: 11
- Views: 1,019
- Forum: Newbie / General discussions
- by Sharc
One may do this 1x ...2x when encountering a problem, or with tapes which have not been used for a decade, or after changing the VCR. Not a general recommendation to do it a few times, IMO. -
- Replies: 11
- Views: 1,019
- Forum: Newbie / General discussions
- by Sharc
You won't get definite answers on this subject, never. Just opinions and personal experience.
Depends much on tape quality and storage condition. The majority of tapes are probably 30+ years old these days, but in various conditions.
Yes
Playing the tapes means mechanical stress. Each playback damages the tape a tiny little bit. Never rewinding them is also problematic (fungi, mold, adhesion ...)
As above. Duplicates (copies) are of lower quality. But 2 versions mitigate the risk of a loss. -
- Replies: 146
- Views: 7,433
For sure I remember Scharfis_brain, the interlace Guru :). Learned a lot from him. -
- Replies: 146
- Views: 7,433
I'm asking the question. I am not stating that VDub's Deint or Bob is better. It is certainly simpler. I would like to know why going via AVISynth is better. If the question isn't already obvious to you, what visual difference/advantage is there between "separate Fields" and double rate deinterlacing/bobbing?
I don't know! All we want is a simple method to determine the field order. What sort of smart tool are you referring to?
Anyway, I asked the question of Lollo. How about you let him answer instead of quizzing me.[/QUOTE]
Well, you had a proposal what Hybrid should do in the other case. So I thought you could tell in this case a s well :)
Sure, so? -
- Replies: 146
- Views: 7,433
@Alwyn: using your (or any other) method(s), what would be your conclusion here (and what should a smart tool be reporting)? -
- Replies: 31
- Views: 1,984
In my past experience I could reduce dotcrawl significantly with the EH50 in passthrough. Use Composite IN (as you have composite only from your VCR as I understand) and S-Video OUT and enable the COMB Filter in the EH50.
There are also Dotcrawl filters available in Avisynth, but the EH50 was much more effective in my tests (quite some time ago I admit).[/QUOTE]
Hi Sharc
Here is the video with combfilter on in the EH50 and also with the VCR sharpness at its default of 9, i believe the other capture i did may have had the sharpness set to 1 (it goes upto 15, and 15 makes it very grainy).
Cheers
DMS[/QUOTE] -
- Replies: 31
- Views: 1,984
In my past experience I could reduce dotcrawl significantly with the EH50 in passthrough. Use Composite IN (as you have composite only from your VCR as I understand) and S-Video OUT and enable the COMB Filter in the EH50.
There are also Dotcrawl filters available in Avisynth, but the EH50 was much more effective in my tests (quite some time ago I admit). -
- Replies: 23
- Views: 1,855
.... was this from your original disc?
[/QUOTE]
Yes. -
- Replies: 4
- Views: 769
- Forum: Authoring (DVD)
- by Sharc
Really?
https://www.videohelp.com/search?q=DVD+authoring
https://www.videohelp.com/software?toolsearch=DVD+authoring&submit=Search&portable=&s=&orderby=Name&hits=50 -
- Replies: 23
- Views: 1,855
@DMS: Sent you a PM -
- Replies: 31
- Views: 1,610
- Forum: Restoration
- by Sharc
Yes. My variant was based on the proposal of @buzz1891, motion interpolated to 50fps, because I always fond baserate QTGMC to look "stroboscopic" due to the shorter camera aperture time of the 25i original footage. Could probably be improved by adding motion blur for baserate QTGMC though.
Can't help with StaxRip either. -
- Replies: 29
- Views: 1,409
- Forum: Newbie / General discussions
- by Sharc
All right. So when you feel that something does not look right, why don't you just take the one which looks right to YOU? That's all what counts at the end, and better than having sleepless nights about a possible ~2% aspect ratio error which may or may not exist.
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