B-frames, 4 motion vectors, I-frames, trellis quantization, quarter pixel??

i'm using the program ffmpegx and it has all these options that I don't know anything about. can anyone tell me what these different options do and their advantages/disadvantages?

i dont know casue im not a video wiz. but have you tried these porgrams for converting video on a mac. I use all 3 depending on the type of video.
quicktime pro 7
handbrake
http://diveintomark.org/howto/ipod-dvd-ripping-guide/
or pspware
http://www.versiontracker.com/dyn/moreinfo/macosx/26153
did you see this
http://homepage.mac.com/major4/ipod.html
give those a try to. im sure 1 or all will prove easier.
GFF

Similar Messages

Motion Vectors in AfterEffects

Hi,
The plugin i am developing needs Motion vectors. Looking at the SDK documentation the only reference I have found in the sdk docs for motion vectors are in relation to the PF_CHANNELSUITE1, PF_GetLayerChannelTypedRefAndDesc. Which I read to only be availiable if they were in the underlying "file type", not quite sure what that means but doesn't sound like something I can depend on. Does after effects provide access to motion vectors for the input layer of effects?
Thanks,
Cian.

Thank you for your response. I am not really interested in identifing objects or surfaces in frame.
I am refereing to http://en.wikipedia.org/wiki/Motion_vector that would descibe a pixels or block of pixels movement from one frame to another. These might be used for creating motion compensated frames (http://en.wikipedia.org/wiki/Motion_compensation).
So I am hearing this is a no?
Thanks,
Cian.

Overlay motion vectors

Hi all! I solve the problem in which I want to find all the motion vector image, as in the picture. I am using the Overlay motion vectors function. But I do not know what the rate should be applied to the inputs Velocity Component 1 and Velocity Component 2. Help me, maybe I need to use the function Optical flow. But I also could not use it.
Attachments:
Overlay motion vectors.vi ‏1328 KB
22da17293663c2056496223d23a577b2.png ‏151 KB

Hi! Thank you! Success came. I used the feature, about which you say and even replaced the function of capturing video.
And to the same set of the same types of values of the image as a example of the Optical Flow example.vi. But I do not stand on the spot and wanted to
ask if there is one more thing.
How to use this algorithm to a few areas of interest(ROI)? To one ROI algorithm applicable well, and here's to more does not work.
Attachments:
Снимок.JPG ‏84 KB
Снимок1.JPG ‏56 KB
Снимок2.JPG ‏47 KB

Extract motion vectors in MPEG-1 using JMF?

Is there a way to extract motion vectors in MPEG-1 using JMF?
Thanks in advance.

That's a bizarre question... you're going to have to explain yourself better.
A "motion vector"... what's that ?
I'm guessing that you automatically want to compute the directions of one or more arbitrary objects in a video clip ????
Are you expecting it to be 2D or 3D ?
Any video clip, or a pre-defined scene like a table top experiment ?
regards,
Owen

Expression Help. 'Every 3 frames move right 1 pixel'?

Hello,
Im trying to solve an issue i am having with aliasing on sliding text.
I would like to drop an expression on my text layer (bitpmap).
ie, i want to slide the text 30 pixels over 90 frames.
If i do that using simple keyframes, the text blurs a bit when not on an whole number frame( 30.3)
Is there an expression i can use so that the text is moved one whole pixel, but not until 3 frames has passed?
Thanks very much for any help!
QMP

X=Math.floor(timeToFrames(time)/3);
Y=position[1];
[X,Y]
Mylenium

What Program Should I use to create motion vector intro?

Hello,
I am creating an intro to a series I am making for a client. I will be animating vector images that I have created in Illustrator by saving them as ".ai" files. In the past I have created a similar project using Premiere Pro CS6 using ".png" files in hopes of saving time and processing power.(However, the final product's quality was not where it should have been.) Would it be more beneficial to create this project in After Effects CS6? What are the benefits of using vector images in After Effects rather than Premiere? Are they any benefits? Also if you have any experience creating animation in these programs I would love to hear any advice seeing that I am new to this type of work.
Thanks,
Alex

What is the final destination of your animation, are you producing this to go on a DVD, or a website. After Effects is superior to Premiere in animation capabilities of vector objects (which really turn into bitmpaped objects for the final rendering no matter what program you use) , but Premiere is quicker for splicing videos together and putting transitions in between them.
If the final quality is not where it should have been your settings were not correct. My advice is to use an experienced professional to do this job for you, until you learn more about quality control for animation.

My vector drawings in illustrator cs3 look pixelated plz see screenshot

**** Notice the side of the girls hair its very serrated and somewhat blurry as well look down at her arm at the very bottom
I am using a mac os x version 10.5.8 and have been using Illustrator cs3 that I purchased for about 2 years and its never had this problem till now. I've just recently noticed a few days back that my vector drawings created in illustrator are looking serrated on the edges of my drawing, and this jagged serrated line goes all along the sides of the vector image and doesn't seem to go away when I zoom in or out......
And from what I know vector drawings created in illustrator can be resized and never pixelate but i don't know why its doing this.
I've searched online for all the possible remedies but nothing seems to get rid of that serrated line which makes my images look fuzzy on the sides.
I've made sure that I'm in preview and not pixel preview but that didn't work.
I went to my illustrator preferences to make sure that anti-aliasing is checked but that didn't seem to fix it either.
I went under the effects menu and clicked on Document Raster Effect Settings and changed that to 300ppi but that didn't do it either.
And also when I take my vector drawing from illustrator into photoshop, the serrated lines become more evident. I don't know what to do. The strange thing is that when i print the images out from my printer, the serrated edges don't show up.
But here's the thing: when I open up my past work that I created in illustrator when I wasn't having this problem, for some reason they are also now showing up with that serrated line on the edges, its really weird!!!!!
I've tried everything except for reinstalling the software, but just wanted to know if someone could help me before I tried this step or knew of something that might have gone wrong.
I also downloaded illustrator trial version cs5 today, and its doing the same thing as my illustrator cs3!!!!
Plz help!!!

I was experiencing the exact same thing in Illustrator CS5. There was a pixelated edge on a vector drawing that was showing up. At first I assumed it was an anti aliasing setting or pixel preview or document raster settings as you did. Then because all else failed I was about to assume it was a screen artifact or bug of some kind.
However, the upon further analysis I found the solution-and it was right under my nose. I had applied an effect to the vector object (an outer glow) and–because I was going to scale it down drastically from the size I had originally drawn it at –I had gone to the object menu and expanded the appearance of the object which caused my outer glow effect to become a rasterized shape underneath my original object.
To remedy this: I simply zoomed in on the pixlelated object, selected it, ungrouped it, selected the top vector object path, nudged it to the right–REVEALING THE RASTERIZED SHAPE BENEATH!
So I would reccomend you try two things:
First select the view menu and choose "Outline" (command or control Y), then look to see if you have any solid "blocks" -this could indicate a rasterizing of some sort has taken place underneath your vector objects. To get back to regular display just choose "overprint from the view menu.
Secondly, you could select the vector object that appears pixelated and then check in the "Appearance Panel" to see if an effect (such as a drop shadow or outer glow) has been applied ,possibly inadvertently. Because just the applying of an effect will cause a "pixelated, jaggy edge" when viewed at high zoom percentages, or indeed any resolution for that matter.
Hope this helps-

Vector art from Illustrator showing up pixelated in Photoshop

I am trying to copy art in Illustrator and paste it into Photoshop but no matter what I do it's showing up pixelated or low resolution.
I have the Document Raster Effects setting in Illustrator set to 300 ppi.
When I copy the art and go to Photoshop and start a new document the clipboard preset says 72 ppi instead of 300.
I changed it to 300 but my art was still coming in low res.
Just found out that if I switch the units to inches from pixels in the new document window and then change the resolution to 300 it seems to work how I want it to.
Is there a setting that will copy the artwork in illustrator at 300 ppi so that when I start a new document in photoshop it will recognize the clipboard data as 300?
Thank you

Vector art in AI has no set resolution. It is set only on output.

Animated GIF not cycling frames in Tomcat

I have pages that use animated gif files to get across a point.
In the IDE, they cycle the images as they should
SunAppserver cycles them properly.
I only get the first frame in Tomcat (5.5.7)
Over on the java.net, I saw this on a page concerning JAI:
GIF
The decoder supports animated GIF files and GIF files with transparent background. Only the first frame of an animated GIF file may be loaded via JAI; subsequent frames must be obtained via direct use of the ancillary codec classes.
Um, am I missing something, or is this a Tomcat problem ?

You just need transparency in your file. Not sure if it has to be pre-multiplied. In graphic converter you need to remove the backgrounds. Haven't used GC in years so can't say how you can be sure it's gone but in Photoshop, Illustrator and After Effects you can choose to have a checkerboard background to tell you when you are seeing 'thru' the image and by how much (the overall opacity or mask of the whole image if that doesn't confuse the issue).
If you are using PS images they will almost certainly generated with a set of rectangles including a perimeter cropping box and white background and these need to go either before it's bitmapped in a vector base app or the relevant pixels erased after it has been bit mapped in GC. As previously mentioned, if you have a unique bkgd colour, colour selecting/keying are some ways to do this). Much faster for >10 images to generate the plots without the bkgd but this may not be possible, what software is source material coming from?
I regularly bring in vector based moving art-work into keynote with alpha from Adobe AE, Apple Quartz and rendered .mov files. Some codecs (H.264) don't support a separate alpha channel (RGBA) but PNG (slow to render) and animation and a bunch of others do. Pre-multiplying removes the A channel in the RGBA (by multiplying the R/G/B by the A values) thereby speeding and making compatible with some GPUs/render pipelines.

Imported still layers moving in frame when effects applied - CS4

Hello
I'm importing still layers from Photoshop into Premiere Pro CS4 as I want to create a depth of field in the stills. I've opened the still images in Photoshop and created new layers (via Copy, no feathering) of each of the main items in the photographs and saved as a PSD. I've then imported the separate layers into Premiere and have been adding gaussian blur to create a depth of field effect as I pan across the still.
The issue is that the layers are moving within the frame. When the keyframe is reached where the effect is starting or stopping, the layer moves up or down (depending on if the effect is starting or stopping) in the frame slightly, only a pixel or two, but it is very noticeable on playback. I've checked my motion effects and there is no movement applied there other than a pan. I'm racking my brains to think what it could be that is causing this, and how to fix it. Does anyone have any ideas, please?
Cheers
J..

I've just removed the vertical blur, leaving only the horizontal, and it's fixed the problem. How odd. It makes sense that the layers were moving up and down though, I suppose...

Audio plays but Video stays stuck on a frame

I use FCP7. The media is a .mov, Frame Size: 720 x 405, Frame Rate 23.98, Pixel Ratio Square, Compressor AppleProRes 422, 48 kHz at 16bit, converted through MPEG Streamclip from an H264 file made from a DVD.
All I'm trying to do is cut off the first 2min of the file: Color Bars, Countdown Leader and Slate.
I Restarted FCP: that brought on the Video which was not there before. But now the video stays motionless. Anybody knows a solution? A thousand thanks.

Take a look at the chart near the top of this page: https://documentation.apple.com/en/motion/usermanual/index.html#chapter=B%26sect ion=5%26tasks=true
720 x 405 isn't one of the listed pixel dimensions. I'd recommend that you re-convert the original h.264 video file(s) to the proper dimensions.
-DH

How to get each frame Info in SWF ?

Hi,all.
I met a problem with SWF decomplie.
If you have edited the fla files, store lots of frames which contains some shape information like pixels color, position and ect
When you want to get that information in SWF, or rather, each frame information(like colors, pixels position), how to get that by AS3?
Are there some ideas get frame info by AS3?

Hi,all.
I met a problem with SWF decomplie.
If you have edited the fla files, store lots of frames which contains some shape information like pixels color, position and ect
When you want to get that information in SWF, or rather, each frame information(like colors, pixels position), how to get that by AS3?
Are there some ideas get frame info by AS3?

Crop and Trim without black frame

Photoshop CS2:
A screenshot contains an image on a neutral
background. The image is roughly cropped and
then trimmed in order to remove small strips
of the background. As a result the image gets
a black frame with exactly 1 pixel width.
So far I have to remove the frame by reducing
the canvas width and height by 2 pixels each.
Any better solution ?
An image with gamut warning shows out-of-gamut
colors by an 'alarm color'.
Is it possible to save the entire image directly,
instead of taking a screenshot ?
Best regards --Gernot Hoffmann

depends on the version of iM you're using:
in older versions, the pic-in-pic was limited: it allowed only to insert content with the same aspect-ratio as the project itself = 16.9 .... if the pic was square, iM added 'borders' to make it fit.
Work-around:
make your pics 16:9 by adding transparency, read this in the UseR Tipp section of this board:
How to create a pointer or a custom title
or, update to latest iMovie10 ....
here, a diff. aspect ratio of pic has no 'borders' -effect; .....

Frames do not align

I have a frameset file with a fixed frame on top and variable
frame on the bottom. The top frame has a table 900 pixels wide with
a 900 pixel flash (swf) menu file in it. The bottom frame has a 900
pixel wide html frame. Both tables are centered in their respective
frames, however they do not line up. The bottom frame seems to stay
a little (3-5 pixels) left of the top frame. I tried flushing both
left and that didn't work either. Any suggestions.
tgcom

You will never be able to fix this. That's frames for you....
Consider
what will happen when the bottom frame requires a scrollbar!
Why are you using them?
Murray --- ICQ 71997575
Adobe Community Expert
(If you *MUST* email me, don't LAUGH when you do so!)
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"tgcom" <[email protected]> wrote in message
news:g7a6hd$7nv$[email protected]..
>I have a frameset file with a fixed frame on top and
variable frame on the
> bottom. The top frame has a table 900 pixels wide with a
900 pixel flash
> (swf)
> menu file in it. The bottom frame has a 900 pixel wide
html frame. Both
> tables
> are centered in their respective frames, however they do
not line up. The
> bottom frame seems to stay a little (3-5 pixels) left of
the top frame. I
> tried
> flushing both left and that didn't work either. Any
suggestions.
>
> tgcom
>
>
>
>

Video - Last frame poster pixelates

Hi, I have a full screen video that plays on page load. I set the final frame to be my poster image
When the video stops it displays the final frame but it's pixelated and looks lo-res (Even though the video plays at a good quality).
Anyone know how I fix this? Thanks.

I found the related bug and am able to reproduce the problem you're describing. I've escalated it to the video team for investigation.

B-frames, 4 motion vectors, I-frames, trellis quantization, quarter pixel??

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