videocassette
Refers to the physical cassette containing videotape, used in VCRs. Now largely historical due to digital media.
昔の映画はビデオカセットで見ていた。
I used to watch old movies on videocassette.
ビデオテープ refers more broadly to the magnetic tape itself, while ビデオカセット specifically means the cassette housing the tape.
Loanword from English 'videocassette'.