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RUCKFREIE ANIMATION IN AFTER EFFECTS!

Smooth ANIMATION IN AFTER EFFECTS!



Frage von Rookie:
Oktober 2005

Hello professionals!
I have an urgent problem in After Effects!
My Composition (720x568, 25FPS) consists of 5 very, very long Photoshopdatein (really long, about 5000pxl). These long banner of the right to turn left through the Picture. I'm with the two Keyframey dissolved in the Postionseinstellung: Anfangskeyframe - Endkeyframe.
My problem: If these beams now travel its path on the screen, jerk the things. The whole is not Smooth animation, but rather a dahingestotter ...
My question: How can I spend this animation really smoothly?

Many thanks in voruas,
lg,
Rookie



Antwort von Stefan:

As the bar is to make playing on the screen sausages ;-)

Whether much or little stuttering in the preview of the computer power (memory storage, disk usage, processor, etc.) or the complexity of the composition dependent.

The important thing is what ultimately makes the rendering engine of AE from it. The finished, rendered video should play smoothly. 100:1 bet that AE creates ;-)

Good luck
The fat Stefan



Antwort von camworks:

right.
And in doubt motionblur (icon "Turn M") in AU. Then jerky guarantees nothing more.








Antwort von Rookie:

Thanks for your answers, folks!
Dicker Stefan, I stutter halt the bet - the output video still. Or rather the bars when they cross the screen ... the video itself runs smoothly even when I look at the following zoom out and apply a blur filter is a beautifully Smooth animation. But not in full-screen image of the bar ...

If the s.den keyframes or s.deren Interpoaltion?
Who knows with these roving keyframes and all the settings?

HELP IS STILL URGENTLY NEEDED!
thx in advance,
rookie



Antwort von camworks:

hmm, that's true, the field order? "lower field first" is the correct setting for dv output.

times with motionblur tried?



Antwort von Thore Rehbach:

The bars "or stutter krisseln"? If krisseln = Halbbildproblem if stutter =?. When krisseln help on a horizontal (or vertical wars:)) Blur (0.2 - 0.5) on the bars to remove either synonymous Halbildflimmern And of course, the correct setting the field dominance (see outposts)

Greeting
Thore



Antwort von Ben:

save your work in your leg s.and uncompressed editing software a new bar over it. Done. No trembling more.
Greeting
Benny



Antwort von Stefan:

Ah, so you want to make a sort of Panning.

There is a tutorial:
http://www.creativecow.net/cgi-bin/page_wrapper.cgi?forumid <FORUMID> = & page = / articles / dallos_matt / pan_zoom / index.html

If the Endvideo is interlaced, you can work synonymous with a composition plus precomposition.

In precomposition "bar" with a frame rate of 50 fps full-screen images you shoot the Verschieberei the bars. The movement is then calculated beautifully smooth of AE.

This precomposition "bar" puts you into a composite "output". The composition "issue" is of course set to your output format (720x576 at 25fps interlaced DV Lower field) first, see outposts.

Good luck
The fat Stefan



Antwort von Rookie:

thanks again for ECENT tips!
I've tried everything - unfortunately without success! * tearing of hair *
motionblur on / off, 25/50 fps, interlaced / progressive - nothing helps!
Unfortunately, the creative cow tutorial describes garnix new - just the way I've done so far. Nevertheless, the animation appears to stutter!
Of the synonymous've stefan described trick with the 50fps precomposition tried. The results remain the same! gibts denn das!?
bennys tip I, unfortunately, did not understand .... (?)

Here I am beginning to despair ... 8-(



Antwort von Jörg:

Hi,
add the project file but once online, (no footage of course) then you can do that much better, I would add my nachvollziehen.Ansonsten Stefans betting, which is seamless. The challenge is not so difficult.
Gruß Jörg



Antwort von Ben:

bennys tip I, unfortunately, did not understand .... (?)

I guess it's the bar at the top and having a letterboxed video (ie 16:9), to tremble. Similarly, I assume You turn into 4:3 and you were in the camera switched to 19:9, or inserted into the beams AE.
If that should be, then I know this phenomenon synonymous of AE, if I slomo work.
To eleminieren the quivering of the beams, however, I prefer the editing software on my 4:3 image, the beam again.
Gruß benny



Antwort von Ben:

Sorry
I looked up again just what is your problem.
My answer, of course not as fit. Was traveling on another boat.
Sorry again.
Greeting
Benny








Antwort von Thore Rehbach:

@ Rookie could help, file, or a clarification of the problem (or a screenshot perhaps synonymous) so you can sowas made available?

Greeting
Thore

Thought s.Probleme with the spatial frequency



Antwort von Stefan:

Spatial frequency is a good word.

How soon will the banner moved?
http://forum.slashcam.de/viewtopic.php?p=109956 # 109,956

Good luck
The fat Stefan



Antwort von camworks:

But the problem has nothing to do with the spatial frequency of! Spatial frequency describes how many differences there are in a block 8x8pixel in luma and chroma. The more details, the higher the frequency. therefore be spat out at high frequencies "muddy" images from the codec in order to get 25MBit upright.
synonymous if the dv-compression with one dct ortsfrequenzanalyse is done, this problem here, probably due to the speed of the pans:
if so and within seconds a picture on the screen chasing, it can happen that a particular image pixel is assigned any integer positions. So it goes to the next point where it should be in the next half frame. Then it jerky. easily controlled by slowing down the pan. then the jerk should disappear.



Antwort von Thore Rehbach:

@ CAMWorks:

Here is a link relating to spatial frequency:

http://www.lohmi.org/data/AVT/viedeotechnik_mitschrift_vorlesung.pdf

I think the best will in any description that would fit on yours.



Antwort von camworks:

that is exactly what I wrote. s.seite 11 is theoretically explained extreme. but believe me, in the SRT (school books for professional broadcasting technology) and a variety of information that are somewhat easier to digest exactly as stated.



Antwort von Thore Rehbach:

Well, then please tell me once, what this has to do with interlaced 8x8 pixel blocks? Spatial frequency refers not only to DV compression but applies to the video editing and s.Television especially for playback. You can synonymous with solid, high contour 8Pixel light beams on a dark background to achieve a high spatial frequency (very well indeed). There are, however, definitely not too many details. We are talking only about the interlaced by the edges of the bar is not clearly an image line can be assigned and therefore flicker. Can worsen the synonymous with a vertical movement of the beam. Can it be defused by a slight vertical blur-(.2 - .5 pixels), thereby maintaining the sharpness impression, however, diminishes the flicker (as radios. Synonymous remove "Halbbildflimmern") filter.



Antwort von camworks:

hello thore,

spatial frequencies have nothing to do with interlaced. I've never claimed synonymous. probably a few things you throw out of the lecture you said confused. Both fields are allocated for the DCT data reduction in large 8x8 pixel blocks and then with help of a ortsfrequenzanalyse weighted, rounded and then quantized. fields are only mentioned in the lecture, therefore, in connexion with the above, because the DCT is applied individually to both fields.

And your summaryplot that synonymous has a completely black 8x8 block a high spatial frequency is simply wrong and inaccurate. inaccurate because of course with alternating black and white 8x8 blocks use a frequency is present, but definitely not high and certainly not the highest. the highest spatial frequency occurring in the 8x8 block occurs when a white alternating with a black pixel (x + y).

If you book the "professional video technique" of've ulrich schmidt, look in chapter 3.4.3 (according to my 2nd edition on page 121-126). where the DCT is described in detail and ussynonymous the significance of the spatial frequencies for the data reduction. For copyright reasons, I will not put a scan here in the forum.

but this has really nothing to do with the original thread on topic. we should either outsource or discuss via email.



Antwort von Thore Rehbach:

But it is not in general to DCT and data reduction in the spatial frequency! And, of course, something with the spatial frequency interlaced to do. Television images reflect Would a progressive, there was the problem not so.

wg. Discussion: is my email: news@unitedgalaxies.info



Antwort von Stefan:

;-) Back to Rookies Banner and my bet

So .... I've tested it. Made 200x5000px Banner and of right to left through a PAL DV Composition of 1000 frames shot length. Motion Blur s.oder out, with default parameters for shutter angle.

And .... jerky it ;-)

But .... not everywhere and not everywhere the same amount.

Pretty good is a stuttering in Media Player to be seen. With motion blur it looks a little better. VirtualDub is no judder in sight, only occasionally going over many frames offset line, hard to describe, as an interference halt.

My guess: it is ssdem viewing program (if any deinterlacing or decompression, or background tasks) and s.der consideration s.PC (CRT monitor with me with 75 Hz).

That's why I played the video with DV on the camera and viewed on the TV.

And .... no sign of judder. Super Smooth movement. AE is king!

Good luck
The fat Stefan








Antwort von camworks:

of contemplation on the tv I came out! Of course moniore have with their progressive representation problems for interlaced material. The deinterlace algorithm that is when mediaplayer zb real bad ...



Antwort von Thore Rehbach:

I have tested similar degree views: moving easily spot a ready rendered by a compositional PAL (25FPS) and lo and behold: it jerky as hell in the RAM playback (yes, it was running in real time:)). Then I set my panel displays the frequency of 60Hz to 75Hz one, and it no longer jerky so strong. I'm assuming that the problem had been dealt with, if I could adjust the frequency to 50Hz. This jerk is normal videos not s.PC on, especially since they rarely involve such a strong / lasting sideways and the image content but rather involves a lot of detail.

@ Stefan: How did you create the banner mean? Simple solids or with image content?

PS: I wrote this while I still have made the Gegentest: PAL resolution, 30FPS set to monitor on 60Hz, RAM playback = no stuttering.

Rookie Well, I do not know what you want where as play, but you should s.PC the framerate with the monitor sync frequencies or vice versa.

Greeting
Thore

BTW: I am considered synonymous of s.Television playback, again you can see again the importance of a detailed description of the problem is:)



Antwort von Stefan:

08/15 Photoshop Picture with background color, dark purple and pink dummy 10mm Verdana double-spaced throughout on the banner. And, yes, there were Farbgrisseln s.den pink / purple edges on the TV ;-)

BTW. was just a hastily. For Choice of colors for banners, Articles, etc. IMHO it is better grab a Stillimage to pick out there, and interesting color combinations with the pipette. The Choice of color combinations from the range of the character program usually quite wrong. It acts on TV are often artificial.

Good luck
The fat Stefan




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