Of all the genres migrating to DVD, the long-form, or concert, music video uses the format as fully as any. One reason is that unlike videotape, which requires spooling and rewinding to move around, the disc allows the viewer to pop about instantly and at random. That gives the music-video audience, often a young one, a lot to do.

''There's more potential to engage the fans, get them more involved with the artists,'' said Kevin Conroy, senior vice president for worldwide marketing at BMG Entertainment. This fall, the company, which distributes about 40 record labels, got into DVD with '' 'Turandot' at the Forbidden City of Beijing'' and '' 'N Sync: 'N the Mix,'' a collection of hits and other features by the pop group.

Puccini's opera, an elaborate $15 million production by BMG Classics for PBS's ''Great Performances'' series, leans more toward standard extras like a behind-the-scenes documentary and a chat with the conductor Zubin Mehta.

The 'N Sync disc keeps the group's teeny-bopper fans busy at the remote control. Choosing from several menus and six small screens, each playing clips of content options, viewers can skip about among songs, a photo gallery, the life stories of 'N Sync's five members, scenes from tours and video taping sessions, choreography rehearsals, shots of the group at play and other items.

On ''Lynyrd Skynrd: Lyve From Steel Town,'' with 15 songs performed by this Southern rock band at a 1997 concert in Burgettstown, Pa., any song is reachable virtually at any instant, as is any element of the extra features, which include backstage scenes, a band history (a long and tragic one), discography and on-location interviews.

''The viewer spends more time with disc than VHS,'' Mr. Conroy said. In recent years, he added, the concert-length music video has lagged somewhat, although VHS titles like ''Sarah McLachlan: Mirrorball,'' a BMG title, and ''Woodstock '99,'' from Sony Music Video, rank high on current best-seller lists. BMG has more than 20 titles on disc, among them ''Alabama for the Record: Live,'' ''Styx: Return to Paradise,'' ''Anthrax: Return of the Killer B's Video Anthology,'' ''Blondie: VH-1 Live From Town Hall,'' ''Meat Loaf: VH-1 Storytellers.'' On Tuesday BMG will release ''The Backstreet Boys'' and ''Time Out With Britney Spears.''

The McLachlan video, which appeared on DVD in October, includes an interview with the singer and a ''scrapbook'' with photographs from her life. Many BMG titles will also be available on tape, but the emphasis will be on DVD. ''We've spent a lot of time with the labels educating them on what's required,'' Mr. Conroy said.

Some material already released on videocassette may lend itself to the sharp images and big sound on disc. With their high production values, concerts shot for television are good prospects. ''Turandot'' and the Alabama, Blondie and Meat Loaf discs are examples. ''Whenever there is an original television production, we immediately think about DVD,'' Mr. Conroy said. Some BMG labels are shooting material exclusively for DVD. ''In future live concerts made for DVD then could be a TV show,'' he said