The file extension was .anim, It's probably a standard IFF ANIM file. It's a format that contains RLE encoded diff-XOR-data(so you can play the video backwards)

The file extension was .anim, It's probably a standard IFF ANIM file. It's a format that contains RLE encoded diff-XOR-data(so you can play the video backwards). https://en.wikipedia.org/wiki/ANIM https://en.wikipedia.org/wiki/ANIM