If your goal is just to understand the file or get it to play properly, try or MPV (both support AV1). For subtitles, rename the .srt or .sub file to match your video file exactly.
The town of Pavaro sat on a narrow spit of land between two rivers, a place musicians loved because the water tuned the air to a pure, trembling pitch. Once each year the town held the Virgin Concerto — not a religious rite but a festival named for the original score’s author, a young composer who’d signed his first manuscripts “Virgin” to mark their untouched, hopeful quality. virginconcerto20191080pav1hdripesubkatmo
: The video codec used for compression. AV1 is a modern, royalty-free video coding format designed for efficient internet streaming. If your goal is just to understand the