You can change head image very fast if you have photoshop CC version.
and you know how to use photoshop.
Basic skills of photoshop require to do that.
Step 3 — Open the video with Photoshop. To do this, just navigate to File > Import > Video Frames to Layers. Select the video file you want and Photoshop will open it as a series of still frames. You can choose to import the entire video from beginning to end, or use sliders to select a smaller portion of the clip. Limiting the frames will make the file smaller, but will also make the video more choppy.
Step 4 — Mess with the settings. You can adjust color balance and whatnot with Photoshop at this point if you’d like. When you have everything looking perfect, head to File > Save for Web. You’ll then be met with a window that looks something like this:
All of these settings can be tweaked to make your GIF smaller. Ideally, you’ll want to make it no larger than 1MB so that it won’t take ages to load on webpages. Play with all of these until you find a sweet spot.
- Colors: This limits the number of colors used to create the image, so the higher the better. Only drop down to 128 or lower if you must, or if your GIF doesn’t have much color to begin with
- Dither: Dithering scatters different colored pixels in an image to make it appear as though there are intermediate colors in images with a limited color palette. Higher settings will yield better looking images, but will also make the file larger
- Lossy: Use this setting to apply an intentional drop in quality. A lower setting is better, but some loss of quality might be necessary to make your file small enough
- Size: Changing the dimensions of your GIF can have a huge impact on the size of the file.
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