week-3 GIFS

UNDESTANDING GIFS

GIFS stands for Graphic Interchange Format, which basically is image format with lossless data compression (LZW compression algorithm) without degrading visual quality. It has evolved as common software for bitmap raster on Internet.
It has been developed as color image framing, which replaced Run length Encoder(RLE) that was only in black and white color.
Animated GIF is contained within single file a set of images that are presented in specified order.

Functionality wise GIF uses 2D raster data
GIFS mostly used for sharp edge line art, low color game data, and low resolution video clips as its lossless compression capabilities
One very good article on GIF format can be found here

STEP01: WHAT I WANT TO DO WITH GIFS

My objective to make animated GIF to showcase my CAD assembly drawing animation and its motion.
So, I have decided to record video of Onshape assembly animation and then convert it into GIF.
For recording screen I have used SRecorder, after researching many such softwares but I found this free and genuine.

STEP02: RECORDING SCREEN WITH SRECORDER

I have installed Srecorder for my windows system from here.
Next thing I did is to open and animate my assembly file in Onshape.
I have set recording frame as with Onshape assembly screen and record it for 10 second and 25 frames.
And saved video file in .mp4 format

STEP03: MAKE GIF FROM VIDEO IN GIMP

GIMP is open source image manipulation software, mostly used for free hand sketch, image editing and format conversion of image.
For my case I will be needing Gimp Animation Package (GAP).
Once we install GAP with our GIMP package, new video menu gets appear on menu bar.

STEP03: GENERATE FRAMES OUT OF VIDEO

GIMP menu bar has video option, and select Split video into frames.
After that in first window browse video from computer.
Next step is to give start and end frame of animation which one want to generate.
For audio I have selected zero value, as I was not going to need audio in my animation.