Frage von kaepten:
Hello friends
I want to export a single frame to BMP from premiere. Unfortunately, brings me to the export, if I have to 720 * 576 with option DV PAL Widescreen 16:9, the picture is too narrow.
I have found here with the query:
http://forum.slashcam.de/premiere-pro-frame-export-vt19350.html?highlight=premiere+++frame+exportieren
Unfortunately, this does not work for me :-(
This means that while the black bars on the left and almost right away, but not quite. When I start square pixels and let the format 720 * 576, then I have above and below scharz beams.
I do not understand it. For hints and tips, I am thankful!
Patrik
Antwort von Markus:
Hi Patrik,
Of the post you mentioned referring to images in the 4:3-format. However, you want to export a 16:9 widescreen.
Has a 16:9 widescreen, although the same Resolutionwie one 4:3-Picture (720 × 576 pixels), but a different Pixel Aspect Ratio (1.42). The picture is exported, it provides the computer with square dots represent - and thus sees the picture vertically squashed.
If the picture is again taken up in a 16:9 video project, remains the same size at 720 × 576 pixels. The pixel aspect ratio will be after importing displayed correctly on the screen.
Should the picture be used outside of a video application, then the image size adjusted to square pixels, for example, 576th to 720 × 405 or 1024 ×
Antwort von kaepten:
Hello Mark
Thanks for the reply.
The pixels with the money I now understand, yet around this issue I would like to still take care :-)
But unfortunately, with the export frame as BMP is not desired. I'm gonna really only for re-export in Premiere - a Stillimage. I would like to export 16:9 and 16:9 reuse.
1. I go to the frame and select export.
2. In the Wizard that comes with all settings like the one I've synonymous for the Project: DV / PAL 720 * 576, 16:9, and the pixel ratio is 1:42, even appear.
3. The File / Export and frame I'll take synonymous straight to Project
4. From the project folder, I now prefer the new picture to the timeline
5. The picture is compressed display. The X axis is simply too short, left and right remains blank.
The image size is therefore somehow not the same. What I do wrong?
If the ratio is 16:9 = 1.42, then it would be the image size in pixels 817.92 * 576?
POSTSCRIPT:
I have had in the project window views the properties of the picture show. Since I will be offered an opportunity "interpret footage" -> "Align to" And then I can choose again 16:9 1.422 DV / PAL. Then it makes my picture be shown in fact correct. Original has the exported frame, so the image file "D1 / DV PAL 1.067" pixel ratio. (According to the properties window)
The question remains why should I hereby make this step yet?
Patrik
PS: Did you like a link where I explained why 720 * 576 Aspect ratio is not always the same ;-) I am in a bit overwhelmed as Cam and DigiVideo Beginners. Actually, I know me otherwise with Pixels and aspect ratios of the image editing her good ...
Antwort von Markus:
Hi Patrik,
Computers work with square pixels. It is easy to understand and has the aspect ratio of a Picture, anyone can easily work out.
From now on, please do not pixel aspect ratio (pixel = picture element) with Picture-confusing aspect! While watching the case, however, looks different. Here, the pixels are (depending on the format and television standard time) more and sometimes less rectangular. A pixel aspect ratio of 1.42 (PAL, 16:9 widescreen) means that a single pixel, 1.42-times wider than high.
You multiply the width (number of pixels) with the pixel aspect ratio, so you get the corresponding number of pixels, if they were square:
720 pixels × 1.42 (2222) = 1024 pixels
The picture aspect ratio is therefore always based on the number of pixels in the image width and the pixel aspect ratio.
Antwort von alfa:
A pixel aspect ratio of 1.42 (PAL, 16:9 widescreen) means that a single pixel, 1.42-times wider than high. And if I do pixel aspect ratio of 1.07 (pal I-4: 3)? 720x576
Quote Mark
The picture aspect ratio is therefore always based on the number of pixels in the image width and the pixel aspect ratio. 720x1.07 = 770.4 ?????
How do we get to 576 please??
Antwort von Rob65:
quite simple:
770 x 576 pixels ;-)
ROB
Antwort von Wiro:
720x1.07 = 770.4 ?????
How do we get to 576 please?? Boy, there are again severe comprehension difficulties.
If an exported from the timeline frame should be reinserted as Stillimage in the timeline, then use the project settings:
720x576 D1 / DV PAL (1,067)
If the frame exported or printed with an image processor are processed, exported it as a
768x576 Square Pixels (1.0) and is under Render Options "join video" field.
Thus, a circle remains a circle.
Greeting Wiro
Antwort von Markus:
720x1.07 = 770.4 ?????
How do we get to 576 please?? It's simple:
720 · 1.0666 · 3: 4 = 576 For simplicity, I have given the pixel aspect ratio (1.0666), not all decimal points. ;-)
