“A repetitive moment becomes eternity.” This fragment of speech, ringing through Tate Modern’s Turbine Hall in Philippe Parreno’s installation Anywhen (2016), might equally describe the frustration or elation of viewers’ experiences of moving image artworks. This season’s blockbuster exhibitions of film and video—Frieze Film (October 6–9, 2016), BFI London Film Festival’s Experimenta (October 6–16), and Parreno’s commission for Tate Modern (October 4–April 7, 2017)—showcased new works in these media through a variety of structures, some more effective than others. When considered against the relative paucity of moving image works in the booths of Frieze Art Fair this year, the Frieze Film project—which commissioned work by Samson Kambalu, Rachel Maclean, Shana Moulton, and Ming Wong—seemed like an effort to redress the balance. The works were shown at scheduled times in the Frieze auditorium and also on national television as part of Channel 4’s Random Acts strand, which inserts three-minute shorts between programs. But to those already familiar with the oeuvres of the featured artists, this year’s commissions felt too brief; introductions to their style and ideas, rather than fully formed works. When it is installed in an exhibition space, as at the 2015 Venice Biennale and now at London’s Whitechapel Gallery (23 August, …