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128
votes
5answers
149k views

Using ffmpeg to cut up video

I am using ffmpeg to cut out a section of a large file like this: ffmpeg -i input.wmv -ss 60 -t 60 -acodec copy -vcodec copy output.wmv The -ss part works fine but the -t is ignored. It correctly ...
24
votes
11answers
25k views

How do I batch change the date taken information in EXIF data?

I use F-Spot to manage my images. For one set of images, the dates somehow got messed up and they all are marked as September 1st 2007. I'd like to change the date taken information to a different ...
34
votes
7answers
26k views

How to extract image from PDF file

I currently use Foxit's PDF reader, and I recently downloaded an image from the Internet, but it is inside a PDF file. How do I extract this image? Operating system is Windows 7.
7
votes
4answers
21k views

How to convert poor quality bitmap image to vector?

I'm designing a website for a group which has lost the original digital image for their logo. The only file they have of it is a jpg which was embedded into a word document. The image has everything ...
3
votes
4answers
4k views

Transform a trapezium into a rectangle

I used my iPhone to capture a painting. However, the angle was not perfect, so instead of getting a straight rectangle, I get a trapezium. I want to transform this trapezium back into a rectangle (...
3
votes
5answers
19k views

How to link processing power of old computers together?

I'm sitting on 8 old computers of varied sorts that are more or less useless at this point for any other purpose really. Is there a way I could link their hardware or processing power or whatever ...
4
votes
5answers
3k views

Convert color photos of documents to good black-and-white (bitonal) images?

Since I don't have a copier or scanner, I'm using an 8 megapixel camera to copy documents. This works pretty well except they need a lot of processing afterward. I'd like to get from a photo to a ...
0
votes
1answer
938 views

blur face on a video file

does anyone know how can i blur a moving face on video file?
15
votes
7answers
8k views

Software to clean up photos of whiteboards and documents? [closed]

I take a lot of photos of whiteboards, blackboards, and so on for teaching purposes (examples online through May 2010). I'm interested in cleaning them up for archival purposes, preferably using Linux....
13
votes
6answers
26k views

Photoshop: Trim a photo so it contains no transparent pixels?

In Photoshop, I've put together some panorama photos using the Photomerge tool and the resulting image contains a lot of transparent pixels. Also, because it's put together of multiple photos the ...
2
votes
1answer
255 views

Get image pixels of prescribed color

I have an image (PNG or JPG) inside which there is at least one pixel of a certain RGB color I know in advance. I want to find the pixel(s) of that color For example, I may have image.jpg, inside ...
5
votes
2answers
4k views

How can I batch convert SVG files containing text to PDF files (specifically on CentOS 5.3 x86_64)? [duplicate]

Possible Duplicate: How do I convert an SVG to a PDF on Linux I would like to programatically convert SVG files to PDF files. However, the SVG files contain text that must be searchable in the ...
2
votes
10answers
19k views

How do I resize images without a loss in quality?

I have a number of JPEG images with a resolution of 2010 x 1080. I want to create an index page for these images which has smaller versions of the originals that I can zoom in on. I tried to do this ...
1
vote
2answers
342 views

Processors cores over processor speed [closed]

Dual 5520 Quad-Core Xeon 2.26GHz with HT & Turbo(2.53 GHz) -vs- Single Quad-Core E3-1240v2 (3.4 GHz to 3.8 GHz) I run web hosting. I'm just wondering which would be more ideal. Personally, I am ...