I now tried MJPEG with VirtualDub; “Error getting compressor output format size” 🙁
With Lagarith I managed to convert it. However, with default settings 2sec clip was 216mb and with Reduced resolution i lost maybe a bit too much quality. Any other setting I should try? I also rendered that reduced resolution clip with Vegas but when I watched it with Windows Media Player, the borders of the video didn’t fill the whole screen. I have no idea what are the sizes of it, because it doesn’t show frame rates anymore. Any ideas what am I doing wrong?