] From: video4linux-list-admin@xxxxxxxxxx ] [mailto:video4linux-list-admin@xxxxxxxxxx] On Behalf Of Gert Vervoort ] Forgot that some encoders also support MPEG-1. ] And also most MPEG encoders do have a from of noise ] reduction, but this ] is very encoder specific. Don't leave out other encoding formats too. Here is a reference board from Sigma Designs. http://www.sigmadesigns.com/products/rhapsody.htm - MPEG-1, MPEG-2 MP@ML, MPEG-4 Advanced Simple Profile Level 5* video decoding (Sigma Designs EM8475) - MPEG-1, MPEG-2 MP@ML, MPEG-4 Simple Profile, Level 3 (extended to 720 x 480i or 720 x 576i resolution) video encoding (Vweb VW 2005) - DolbyR Digital, MPEG-1 Layers 1 and 2, MPEG-4 Low Complexity AAC, and CD-DA audio decoding (Sigma Designs EM8475) - MPEG-1 Layers 1, 2 and 3, MPEG-2 Layers 1 and 2, Dolby Digital 2.0 and AAC 2.0 audio encoding (Vweb VW 2005) (Haven't found any commercial products using this chip yet.) A chip from Cirrus Logic can encode in MPEG2 (and integrates seamlessly with the saa7134): http://www-test.cirrus.com/en/products/pro/detail/P951.html - Supports real-time MPEG-1, MPEG-2 MP@ML, SP@ML, and MP@LL - Support for constant/one-pass variable bit rate - IPB-pictures, CBR, or VBR to 15Mbps - I-pictures only to 30Mbps - Supports Transport, Program, and Elementary streams - Support for real time, 2-channel, encoding/decoding of digital audio of either Dolby Digital or MPEG audio (Layer I, II, and III - MP3) - 8-bit OSD support (2-b text, 2-b to 8-b graphics) - 8 MB memory for full D1 (720) NTSC/PAL pictures Commercially available in http://www.kworld.com.tw/products/pro2/kw-capure-version.htm Whatever interface is devised it needs to be extensible (for both audio and video). -Greg --
