Convert ffv1 to rgba

Download and install the latest version of Filestar.
Right click on one or more Ffv1 file(s) on your desktop and select Convert with Filestar.
Type convert to rgba in the search box.
Press Convert.

What is the difference between .ffv1 and .rgba?

Name: FFV1 (Lossless Video); RGB Bitmap
Extension: .ffv1; .rgba
Format: Binary; Binary
Category: Video; Raster Image
Developer: SGI
Description: An RGBA file is a color bitmap image format created by Silicon Graphics (SGI). It is similar to the .RGB file as it supports color RGB channels with an alpha channel.
MIME Type: video/x-matroska; image/x-rgb
Sample: sample.rgba
Wikipedia: .ffv1 on Wikipedia; .rgba on Wikipedia