To get your chart as image or video use Export chart as image or video functionality. To make sure your image/video won't be blurry:

• under 'Custom size' input exact size of image/video if you know it;
• choose higher DPI - 300 DPI is perfect for presentations, pdf files and prints, 96 DPI should be enough for images/videos designed for webpages because the more DPI the heavier the file is;
• in your presentation avoid stretching image/video in any direction, it's better to export new image;
• if you want to export static image and don't know the exact size - use SVG format - it's a vector graphic which means it keeps sharpness when scaled;
• if you don't know which size is perfect go with higher values, it's always better to shrink than to stretch (but too much shrinking can be bad too).

Images

For static images you can choose PNG or SVG. PNG in lower DPI is great for web and emails. SVG will be the best when you don't know which size to choose as it is a vector graphic and can be scaled without losing sharpness.

Vector images

SVG and EMF are Vector graphic format. They keep sharpness even when you stretch them. They are great if you plan to have them expanded after a click on webpage. SVG is more popular.

When you save charts in the SVG format, the text will normally be vectorized along with the rest of the image. Under Configuration > Settings > SVG tab you can select fonts that you don’t want to be vectorized when saving as SVG.
Note that SVG can also show animation and can show Tooltip.

Videos

For videos you have GIF (looped) and MP4 (not looped). Note that also SVG can show animation. For more information see Animated charts.