AuthorScript DVR works with your computer's TV tuner and video input circuitry to provide real-time encoding of video and audio to hard disk.
FEATURES
- Real-time encoding of Analog TV Tuner, S-Video, and Composite sources to MPEG1 and MPEG 2
- User selectable recording quality level
- Time-shift for instant replay or whole-program review
SPECIFICATIONS
- Accepts NTSC or PAL video source
- Film (24 fps) and Video (30 fps) frame rates
- Field/Frame decoding and deinterlacing (Bob & Weave)
- MPEG2 video
- MPEG1 Layer 2 audio
- Compatible with YUY2 and UYVY color-space input
- Video noise filtering
- 800kbps - 20Mbps video bitrate encoding
- Configurable motion search parameters
- Configurable bitrate MPEG-1 Layer audio encoding
PRIMARY CAPABILITIES DVR Recording Modes
The DirectShow components supplied with the AuthorScript DVR SDK (Windows version) can be used in a number of different ways to provide television and analog video viewing, recording and time-shifting experiences for your end-users. Each mode will have different system requirements for optimum performance and/or require you to make trade-offs in the length of program being recorded, or its quality.
Live Viewing Mode
In live viewing mode, all your computer's resources can be devoted to the relatively simple task of decoding and presenting video on your monitor. Understandably, this produces the best quality picture.
Real Time Recording Mode
When Recording video to disk (for later editing), the video must be received from the tuner or camera input, then encoded into AuthorScript DVR's MPEG1 or MPEG2 format. These two operations require more computer resources than simple viewing. To ensure the best possible recording quality, your application may suspend playback or "Preview."
DVR Playback Mode
While not specifically a "recording" mode, DVR Playback does involve using the files created during Recording Mode. Since they already exist on disk, the impact on system resources is no greater than playing back any other type of media files.
Time Shift Mode
Time shifting is the most resource intensive set of operations. First, the video must be received from tuner or camera input, encoded to MPEG1 or MPEG2 format and stored in the Time Shift buffer. In order to be available for playback (in either near-real time or shifted time), the buffered video must be decoded again, processed through the computer's VGA display circuitry, and finally delivered to the monitor. |