QuickTime Formats Supported in Mac OS 9

During the Mac OS 9 era, Apple's QuickTime framework—primarily encompassing versions 4, 5, and 6.0.3—served as the system's foundational multimedia architecture. This article outlines the specific video, audio, image, and interactive file formats natively supported by QuickTime on Mac OS 9 without the need for third-party extensions.

Video and Animation Formats

QuickTime provided robust video decoding and playback across standard digital video containers and compression schemes:

  • QuickTime Movie (MOV): The primary native container, supporting proprietary codecs like Apple Video, Sorenson Video (1, 2, and 3), Cinepak, and Apple Animation.
  • AVI (Audio Video Interleave): Standard Microsoft video files using compatible codecs like Cinepak, Indeo, or uncompressed video.
  • MPEG-1: Standard system streams, video streams, and VCD formats (.mpg, .mpeg).
  • DV (Digital Video): Native support for raw DV streams and DVCPRO files (.dv, .dif) captured via FireWire.
  • Animated GIF: Web-standard animated graphics files.
  • Autodesk Animation (FLC/FLI): Legacy 2D computer animation formats.

Audio Formats

Mac OS 9 handled standard audio, compressed web formats, and musical data directly through the QuickTime sound engine:

  • AIFF / AIFC (Audio Interchange File Format): The standard uncompressed audio format for the classic Mac OS, as well as its compressed variant.
  • WAV (Waveform Audio File Format): Standard Windows PCM and compressed audio files.
  • MP3 (MPEG-1 Audio Layer 3): Fully supported for decoding and playback natively from QuickTime 4 onward.
  • Sound Designer II (SDII): Professional audio format developed by Digidesign, standard in Mac audio production.
  • AU / SND: Sun Microsystems and NeXT audio files commonly used on Unix systems and early web environments.
  • MIDI (Musical Instrument Digital Interface): Standard MIDI Files (SMF, .mid, .kar), rendered using the built-in QuickTime Musical Instruments software synthesizer.
  • Voice/Speech Formats: Qualcomm PureVoice and QDesign Music formats optimized for early internet streaming.

Still Image and Graphic Formats

QuickTime acted as the graphics translation layer for Mac OS 9, enabling native viewing and conversion of diverse raster formats:

  • PICT: The native graphic format of the classic Mac OS.
  • JPEG / JFIF: Standard compressed photographic images.
  • TIFF: Tagged Image File Format, both uncompressed and compressed.
  • PNG (Portable Network Graphics): Lossless web graphics format.
  • BMP: Windows and OS/2 bitmap files.
  • Photoshop (PSD): Standard Adobe Photoshop single-layer flattened images.
  • Targa (TGA), SGI, and MacPaint: Legacy workstation and raster graphic formats.
  • FlashPix (FPX): Multi-resolution bitmap image format.

Interactive and Streaming Formats

QuickTime also integrated support for interactive media, synchronized presentations, and streaming protocols:

  • QuickTime VR (QTVR): Interactive panoramic images and 360-degree object movies.
  • Macromedia Flash (SWF): Vector animation playback natively supported up to Flash 4/5 assets depending on the installed QuickTime version.
  • SMIL (Synchronized Multimedia Integration Language): XML-based presentations coordinating audio, video, and text.
  • Text Tracks: Embedded subtitle, caption, and chapter tracks within QuickTime containers.
  • RTSP/SDP: Real-Time Streaming Protocol and Session Description Protocol files for live internet broadcasting.