Frage von intercorni:
Hello,
I have a question about the Canon XM2, with which we have rotated a video.
When the sifting of the material of the cam on a monitor, we could see no artifacts. Anders, however, after the capture. Here, the video looks extremely out and is full of artifacts similar to a jpg compression. The cameraman told me that this is a normal DV Resolutionentspreche but I def. do not believe.
I enclose a screenshot of a scene, inder the artifacts you can see very well:
Antwort von Markus73:
I think that there is an error during capture was made. What do you think? After apparently DV format, which actually is not "captured", but just copied, I do not know what a mistake it could make.
Is the picture because a snippet or Full?
Gruß,
Markus
Antwort von intercorni:
The Full Picture is unfortunately squashed (D1 PAL / DV widescreen).
I come the files are quite small before. With G-Spot, I have this on a Compressor investigated, but because nothing could be found.
Gruss,
Cornel
Antwort von Markus73:
I come the files are quite small before. No, that's ok. In DV as a rule of thumb, 1 GB per 5 min, which is already out.
Gruß,
Markus
Antwort von intercorni:
Hm, or is there a vulnerability in the representation of red?
Gruss,
Cornel
Antwort von Markus73:
Hm, or is there a vulnerability in the representation of red? Hm, or there is restriction of s.der DV material (chroma sampling), which particularly comes to fruition, since only
one basic color occurs (which, it should then be no preference)?
Here, I speculate only spaces and times the field for people who are better than me :-)
Gruß,
Markus
Antwort von Schleichmichel:
Chroma Subsampling. Dein Kameramann (and Markus synonymous) hat schon recht. Hier ist ja alles Rot.
Antwort von noouch:
Hello,
73 Mark's approach has been recognized.
DV Compression works with einm color of 4:2:0
That means 4 points on the brightness information, only half the points of the BY color and a quarter of the RY color.
Therefore, (almost) pure color (Picture what your time is now, a lot of red, slightly different colors or brightness) like this.
That is quite normal.
For good reason there are so professional in the video sector systems such as DVCPRO50, Digital Betacam (just to name times 2).
What you see is completely normal for DV! Since the camera for nothing ....
Because you need a camera above buy (for 10 to 30 times the price)
Gruss
Antwort von xandix:
Excuse me,
I have not logged in!
Antwort von intercorni:
Thanks for the replies.
How could I now in hindsight it will limit the damage to an optimum s.Qualität to achieve?
Antwort von Markus73:
Thanks for the replies.
How could I now in hindsight it will limit the damage to an optimum s.Qualität to achieve? Give it time, perhaps with a slight "blur" effect. This is my software (Magix) of the standard trick, if one blue with Greenbox and want to work, which for the same reason sometimes dirty looks. Thus it's already much better.
Perhaps your software synonymous offers a kind of anti-aliasing?
Gruß,
Markus
Antwort von Markus:
This theme emerges here of time to time:
MVX3i just bad in red? In retrospect, the change is no longer correct. It will filter but who at least mitigate such artifacts ...
Antwort von noouch:
Great tip, thank you!
