Digitising my home video VHS tapes, confirm my method?

[Hushpower]

And while you're at it, do a comparison between Hybrid/QTGMC and VDub/Yadif/Double FR. Make sure the bitrates and codecs are the same.

Another thing: Mediainfo is a great little program for analysing files. It tells you everything there is to know and is especially helpful for issues such as the 16gb export you did. One caveat: captured AVI video (eg 720x576) does not have an aspect ratio flag in the file header, so Mediainfo (and other programs) simply divide the width by the height to come up with 5:4. The video is, of course, 4:3.

[lordsmurf]

Quote:

Originally Posted by Hushpower

Watch those posted images; you have to do them via the "Manage Attachments" system. It's a pain but it's LS's train set. We have asked for a better system.

A new train set is already ordered and slowly being built.

[latreche34]

Quote:

Originally Posted by Hushpower

You obviously didn't notice the Youtube horizontal size is 1350, which is 1.25:1, same as 1440x1152, and which is the ratio that YT displays the video at, as per the screen grab attached.

Yes, youtube algorithm doesn't care about width, but it always defaults to 1080p as the standard vertical resolution and re-calculate the horizontal resolution assuming square pixel, If you don't lock the aspect ratio youtube will stretch the frame because it treat them as square, You can clearly see that his non standard resolution stretched the video.

[Jayce72]

So I have recorded some new footage using the Panasonic DMR ES-10 as a TBC and audio direct to capture card

I have used VirtualDub2 to deinterlace using Yadiff and also to crop and resize.

I have uploaded 4 versions (all are deinterlaced)

1. is just 720x576 https://www.youtube.com/watch?v=n5JHFW34cyw
2. is the 720x576 stretched to 1440x1080 https://youtu.be/O90WoLJCeQU
3. Is the 720x576 resized to 1440x1152 https://youtu.be/EkyKxfbILxU
4. Is the 720x576 cropped to 4:3 and resized to 1440x1080 https://youtu.be/Nm5ZIm16gSk

[Hushpower]

Good job ! but...

Video 1 (720x576) is not 4:3. It's 1.25:1 (or 5:4). Have a look at/measure with a ruler at the physical YT dimensions on your screen (I use a screen capture program which shows the pixel height and width).

After you cropped it, if you're going for square pixels (the simplest in my mind) you resize it to 768x576. That's 4:3. Otherwise, you have to export it using one of those SARs (16:15?? I think for PAL SD).

Video 2 corrects the error in video 1 because 1440x1080 is 4:3 (1.33333 to 1), just like 768x576.

Video 3 shouldn't be 1152 because it stretches the video (1440x1152 is 1.25:1). That will be evident if you measure the YT screen size.

Video 4 is good! Similar result to video 2.

Whatever you do with resizing and export SARs, the end result must be a 4:3, or 1.33333 to 1 display on the Youtube screen.

I'd apply a bit of light denoising. I find the Virtual Dub MSU Denoiser v 251 works pretty well for the (free) price. I get best results using the preset "Medium Noise MSU" and both sliders on 42. That will remove most of that colour blotchiness (and the small cost of sharpness).

[latreche34]

Video #2 have like 1/2 a second, But all have wrong aspect ratio, You failed to understand that you should crop with a ratio of 704:576 before you resize to 1440x1080, I don't see any point of the resolution 1440x1152. Good luck.

[MacNB]

Quote:

Originally Posted by latreche34

You failed to understand that you should crop with a ratio of 704:576 before you resize to 1440x1080

Could you please remind us where the "magic" number 704 comes from and why that value ?
Thx

[latreche34]

https://en.wikipedia.org/wiki/Pixel_...tal_conversion

[Jayce72]

So, now:

Using virtualdub2
- Deinterlaced using QTGMC
- Resized to 1440x1080 (from PAL 720x576)
- Letterboxed framing to remove noise
- 4:3 aspect ratio
- Compressed x264
- Saved as MP4

https://www.youtube.com/watch?v=YhYPkjpbytA

[Hushpower]

Looks good to me!

Putting on my heretic's hat, I don't subscribe to this masking stuff, especially if they are not symmetrical. I think it looks amateurish. Few YT videos are masked; they are cropped. The video is going to be re-encoded anyway so you're not "losing" quality by dropping as opposed to masking.

[lordsmurf]

I don't think masking is amateur at all. What I find truly amateur is when SD or vertical phone footage is repeated and blurred behind the video, to fill in the black bars. People need to get over their obsession (OCD) with "black bars" and "black outlines". The same folks are often the ones who watch 4x3 as 16x9.

There are times to crop, and times to mask. It's always about the destruction of the content. Some footage cannot withstand cropping (and thus enlargement) without detriment. I'm not 100% either way, but always defer to the safe method of masking. You can always mask fine, you cannot always crop fine.