Infoseite // Quality of 1080/25i to 720/50p (;) via software



Frage von beiti:


As currently receive the most affordable camcorder in 1080/25i, are but a few stations broadcast in 720/50p, should this change in the near future are quite important.

Because Edius Neo with the mix of different processing format is advertised, I have tried to change it (; therefore 25i footage into a 50p project imported). The result was disappointing, however: the resulting 50p format still shows very clearly the lines of the original jumping-25i format, most obviously the s.den horizontal edges of title documents or other sharp horizontal structures in the Picture.

Anybody know any software solution, with which it works better?

Space


Antwort von pailes:

On the Mac, I was with compressor of Final Cut Studio completely satisfied. It was ever on the material a few minimal artifacts but the result was quite useful.

Space


Antwort von tommyb:

What you see is a problem of interlacing. With natural images that is not so conspicuous, very strong in artificially generated images.

I always recommend for converting Avisynth again, as you can in order to address this problem very efficiently. I would use the following:


[code: 1: edc6f469a1] AviSource (; "datei.avi") # source file

# Colorspace conversion
ConvertToYV12 (;) # 4:2:0
# ConvertToYUY2 (;) # alternatively 4:2:2

# Deinterlacing to 50p, is 1920x1080p50
tdeint (, 1)

# Runterskalieren at 1280x720
spline36resize (; 1280.720)

# Anti-Alias | Wavefront Mayaing Anime IVTC filter from package
Ndaa (;)
[/ code: 1: edc6f469a1]

The Anti-Alias | Wavefront Mayaing filter can - if eliminated so far - the Alias | Wavefront Mayaing Effects (; podium Education s.harten edges). In the Picture synonymous but could come across a bit washed out. Depends very much on the material. Alternatively daa (use;).


I have received thus far always been very nice result.

Space


Antwort von Bruno Peter:

I do it as synonymous tommy or something like that.
An alternative is still MPEGStreamclip And of course, After Effects!

Space


Antwort von MK:

Deinterlace? Would it not be better Bobbe on the 25i to 50p to? That would be upscale after the Fields one, up to the minimally smaller resolution, native 50p conversion?

Space


Antwort von jazzy_d:

So my HDV (; 1440x1080 50i) of watching the HC3 in WMV9 720/50p with 10Mbit / s from the Adobe Media Encoder echt toll aus (; is possibly MS Media Encoder or WMV encoder or so already installed, but does not know whether the encoding at all affected).

Project import ins now I guess times (; synonymous when I Edius Neo, or not so well) know that here no conversion but simply an interpretation is made. And the preview window in the NLE is really not so crucial.

Properly deinterlaced we see absolutely no ridges or so in the exported / rendered p-material.

Are the tracks in 25i already exist or are created in the 50p-Project?

Space


Antwort von beiti:

"jazzy_d" wrote: Properly deinterlaced we see absolutely no ridges or so in the exported / rendered p-material. Combs, of course, no one sees (and the danger would only 25p). But what one sees when transformed 50p, is a line flicker between images.

Quote: Are the tracks in 25i already exist or are created in the 50p-Project? Create tracks only at 50p to flicker s.den titles would not prevent, but not the flicker in the actual film. I've seen it several times, for example s.der brick structure of a roof.

Space


Antwort von tommyb:

Quote: Deinterlace? Would it not be better Bobbe on the 25i to 50p to?
When Bobber only the fields scaled to full resolution. Since the camcorder was the first progressive pictures we take are s.es exactly two pieces, he pulls out from the first picture, the straight lines from the second picture, the odd lines. These odd and even rows are then combined into a Picture.

Dividing these pictures again and play it off, there will be edge flares, horizontal lines jumping out and her. So it should not be.

A deinterlacer first separates the interlaced picture in the two fields, and added the missing lines on the basis of the other image. This works for peaceful motives very well in movement and very sharp images but can also flicker.

The deinterlacer then makes things even smarter than just a simple bobber.



Quote: Create tracks only at 50p to flicker s.den titles would not prevent, but not the flicker in the actual film. I've seen it several times, for example s.der brick structure of a roof.
You'll see forever. The only way to prevent this is to the material to 50% of its size, scale, or to use a quality deinterlacer as possible to (; such as, say tdeint (;) for Avisynth is).

Space


Antwort von beiti:

"TommyB" wrote: You'll see forever. The only way to prevent this is to the material to 50% of its size, scale, or to use a quality deinterlacer as possible to (; such as, say tdeint (;) for Avisynth is). Because I'm curious about how well the channel ÖR the problem get a grip. There will come times more likely to international (; sports type) transfers that need to be changed even in real time of 25i to 50p. Since one can only hope that the compression of the worst mistakes swallows ". ;)

Space



Space


Antwort von tommyb:

Gabs during Euro 2008 but already a taste of it. 1080i recording and somewhere, the entire inferior runterskaliert. 720p was not what was then transferred, but (so extreme flickering field lines, and even vertical!) I have not seen for a long time ...

Space





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