Decrease size of a avi video with lowest quality loss I have been working on an animation with Blender. Further I rendered it at 24 fps at 1080p resolution.
The problem is that the rendered video is around 30 seconds and has size around 4.3 GB.
Is there any way to decrease the size without losing much quality?
Now you've actually finished your question, the simple answer is to encode it using h.264/mp4. Blender can render to h.264, using ffmpeg video in the render settings but the better way is to render to image sequences and convert.
Since you have a render, you can convert it to h.264 / mp4 without having to re-render. There are many ways to do this, ffmpeg being one of the best, but if you prefer a GUI then Handbrake is a good option.