Compressor is a video and audio media compression and encoding application for macOS made by Apple.

[4] Compressor is used for encoding video and audio media in multiple formats, including HEVC (H.265), MPEG-1, MPEG-2 for DVD, QuickTime .mov, MPEG-4 (Simple Profile), MPEG-4 H.264 and optional (third Party and often commercial) QuickTime Exporter Components to export to Windows Media.

Among its other features are the ability to convert from NTSC to PAL and vice versa, and the ability to upscale from standard-definition video to high-definition video with feature detail detection to prevent serious quality losses.

Compressor could be used with the discontinued Qmaster for clustering, or configured as a server to work on the jobs submitted by other computers on the network.

With its update to 4.2 in April 2015, Apple added performance upgrades, as well as the ability to use Compressor to produce a compliant package to submit video content for distribution to the iTunes Store.