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Not applicable provided by wrapper formats.

Proprietary standard developed by Sorenson Media, Inc.ĭocumentation is provided by a SIGGRAPH education page.Ĭodecs and software may be licensed from Sorenson Media, Inc.ĭepends upon algorithms and tools to read will require sophistication to build tools. The QTV_Sorenson files are encoded at 15 fps and 320x240 pixels the audio stream employs IMA (Interactive Multimedia Association) 4:1 compression, based on PCM sampling at 22 kHz. Local use LC experience or existing holdingsĪmerican Memory produced QTV_Sorenson (QuickTime, Sorenson codec) for the Dance Instruction Manuals collection, where they offered endusers larger picture size and higher resolution than provided by QTV_Cinepak (QuickTime, Cinepak codec) files. Other formats, not documented at this time.

SWF_8, Macromedia Flash SWF File Format, Version 8 SWF_7, Macromedia Flash SWF File Format, Version 7 QTV_Sorenson, QuickTime Video, Sorenson Codec Generally used as an end-user delivery format. The SIGGRAPH education page states that the codec uses "advanced vector quantization with motion compensation," and that the Developer Edition of the Sorenson codec offers variable bitrate encoding, temporal scalability (sensitivity to the ability of the playing machine to process data), and the automatic determination of new keyframes (frames that contain all image information without reference to predictive or bidirectional frames that require adjacent frames for decoding). Macromedia (now Adobe) literature states that the FLV/SWF variant of Sorenson is related to H.263. The matter of versioning may account for the fact that the Wikipedia article on the Sorenson codec associates the codec with both ITU-T H.263 (see MPEG-4_V) and H.264 (see MPEG-4_AVC). Spark may be the successor to the Sorenson codec, version 3, initially described at this Web site in 2004 comments welcome. Sorenson Media promotional information for version 4.5 of the Squeeze software application, consulted in February 2007, lists a number of possible output formats, including MPEG-, -2, and -4, and Flash Output (Spark). The compiler of this description is uncertain about Sorenson's version numbers. Bitstream encoding for video developed by Sorenson Media, Inc.