| # | rid | key | def
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| 1 | |ProjectID110:alpha| | |alpha| | |In computer graphics | the measure of a pixel's opacity. A pixel with the maximum alpha value is opaque | one with a value of zero is transparent | and one with an intermediate value is translucent.| |
| 2 | |ProjectID110:bit_block_transfer__bitblt_| | |bit block transfer (bitblt)| | |A graphics function that moves blocks of bits from one bitmap to another in the most efficient manner supported by the hardware.| |
| 3 | |ProjectID110:bitblt| | |bitblt| | |See definition for: bit block transfer (bitblt)| |
| 4 | |ProjectID110:bob| | |bob| | |A technique for displaying interlaced video. In bob mode | each field is displayed individually. The gaps between scan lines are filled using interpolation.| |
| 5 | |ProjectID110:codec| | |codec| | |An abbreviation for compressor/decompressor. Software or hardware used to compress and decompress digital media.| |
| 6 | |ProjectID110:color_key| | |color key| | |A color used for transparent or translucent effects. An overlay surface is displayed in the region of the primary surface that contains the color key. In video production | color keys are used to combine two video signals. Also called a chroma key.| |
| 7 | |ProjectID110:composition| | |composition| | |A collection of tracks and (optionally) other compositions. At rendering time | the sources in a composition are composited into a single image.| |
| 8 | |ProjectID110:deinterlace| | |deinterlace| | |To combine the interlaced fields in a video frame so that | during playback | the lines of the video frame are painted sequentially.| |
| 9 | |ProjectID110:delta_frame| | |delta frame| | |A video frame that contains only the changes from the previous frame. In contrast | a key frame contains all the data necessary to construct that frame.| |
| 10 | |ProjectID110:dib_sequence| | |DIB sequence| | |In DirectShow Editing Services | a series of device-independent bitmap (DIB) files rendered in a sequence as video frames.| |
| 11 | |ProjectID110:downsample| | |downsample| | |To reduce the sampling rate of a signal.| |
| 12 | |ProjectID110:downstream| | |downstream| | |In a filter graph | the direction in which digital media samples travel.| |
| 13 | |ProjectID110:field| | |field| | |A portion of an interlaced video frame. With interlaced video | the scan lines of even-numbered fields fall spatially halfway between the scan lines of odd-numbered fields.| |
| 14 | |ProjectID110:gamma| | |gamma| | |The curve in the function that maps changes in voltage to changes in brightness on a phosphor screen. The change in voltage needed to produce a specified change in brightness is not constant across voltage levels.| |
| 15 | |ProjectID110:group| | |group| | |A top-level collection of compositions and tracks | all representing the same multimedia type. Each group produces a separate stream in the rendered project.| |
| 16 | |ProjectID110:intelligent_connect| | |intelligent connect| | |In DirectShow | an algorithm used by the filter graph manager to build graphs and connect filters. If an output pin is specified | the filter graph manager renders the data from that pin by using default renderers. If two filters are specified | the filter graph manager attempts to connect them. It will insert intermediate filters if necessary.| |
| 17 | |ProjectID110:interlace| | |interlace| | |To display a video frame in two fields. One field contains the even lines of the frame | the other field contains the odd lines. During playback | the lines in one field are displayed first | then the lines in the second field are displayed.| |
| 18 | |ProjectID110:interleaving| | |interleaving| | |The arrangement of video frames and audio samples in a file | such that video data alternates with audio data at regular intervals.| |
| 19 | |ProjectID110:kernel_mode| | |kernel mode| | |The operational state of a processor that enables full | unprotected access to a system. A driver or thread running in kernel mode has access to system memory and hardware.| |
| 20 | |ProjectID110:key_frame| | |key frame| | |A video frame containing all the data needed to construct an image without reference to previous frames.| |
| 21 | |ProjectID110:latency| | |latency| | |The amount of time it takes a filter to process a sample.| |
| 22 | |ProjectID110:letterbox| | |letterbox| | |A video display format in which black bars appear above and below the video image while it is played. The letterbox format maintains the original aspect ratio of an image when it is displayed in a window with a different aspect ratio.| |
| 23 | |ProjectID110:locked_audio| | |locked audio| | |A video format in which the number of audio samples in a specified number of frames is fixed. In unlocked audio | the number of samples in a set of frames may vary | although the average equals the stated sample rate.| |
| 24 | |ProjectID110:lookahead| | |lookahead| | |To use data from later in the stream to process the current data. For example | the next key frame is used to calculate a delta frame.| |
| 25 | |ProjectID110:medium| | |medium| | |In DirectShow | a structure that identifies a hardware data path between two devices on the host system. They can be devices on the same card | such as a crossbar and a tuner on a TV card; devices on separate cards; or external devices. Kernel-mode filters based on the Windows Driver Model can use mediums instead of media types to determine pin connections.| |
| 26 | |ProjectID110:multiplexer__mux_| | |multiplexer (MUX)| | |A filter that combines multiple input streams into one output stream.| |
| 27 | |ProjectID110:mux| | |MUX| | |See definition for: multiplexer (MUX)| |
| 28 | |ProjectID110:national_television_standards_committee__ntsc_| | |National Television Standards Committee (NTSC)| | |The dominant television standard in the United States and Japan. NTSC delivers 30 interlaced frames per second at 525 lines of resolution.| |
| 29 | |ProjectID110:ntsc| | |NTSC| | || |
| 30 | |ProjectID110:pal| | |PAL| | || |
| 31 | |ProjectID110:pan_scan| | |pan-scan| | |A DVD display format in which a 16x9 video is cropped for display in a 4x3 window | by using parameters defined by the video author.| |
| 32 | |ProjectID110:phase_alternating_line__pal_| | |Phase Alternating Line (PAL)| | |The dominant television standard in Europe and China. PAL delivers 25 interlaced frames per second at 625 lines of resolution.| |
| 33 | |ProjectID110:preroll| | |preroll| | |To capture or play a number of video frames or a portion of audio data before encoding or rendering begins | in order to allow the source device to stabilize. Also used as a noun to describe the portion of the data to be prerolled.| |
| 34 | |ProjectID110:primary_surface| | |primary surface| | |Memory containing the image being displayed on the screen.| |
| 35 | |ProjectID110:quality_control| | |quality control| | |In DirectShow | a mechanism for adjusting the rate of data flow in response to run-time conditions.| |
| 36 | |ProjectID110:reference_clock| | |reference clock| | |A clock that provides a common reference time with which filters can be synchronized.| |
| 37 | |ProjectID110:reference_time| | |reference time| | |An absolute time established by a reference clock in the filter graph.| |
| 38 | |ProjectID110:smart_recompression| | |smart recompression| | |In DirectShow Editing Services | the decompression and recompression of source data only when the data must be altered in some way before being written to the destination file.| |
| 39 | |ProjectID110:stream_time| | |stream time| | |In DirectShow | the current time minus the previous start time. Stream time is defined only in a running filter graph.| |
| 40 | |ProjectID110:subtype| | |subtype| | |A GUID value that describes the specific format of data digital media stream.| |
| 41 | |ProjectID110:synchronization_point| | |synchronization point| | |A media sample that can be decoded without requiring the decompressor to examine any other samples. One example is a key frame.| |
| 42 | |ProjectID110:tearing| | |tearing| | |A visual artifact that occurs when one displayed video frame contains parts of two different source video frames. It is usually caused by improper synchronization between video rendering and the graphics display.| |
| 43 | |ProjectID110:time_code| | |time code| | |A digital signal applied to a stream. The signal assigns a number to every frame of video | representing hours | minutes | seconds | and frames.| |
| 44 | |ProjectID110:time_stamp| | |time stamp| | |In DirectShow | the time on a media sample indicating when it was recorded or when it should be scheduled for playback.| |
| 45 | |ProjectID110:timeline| | |timeline| | |In a DirectShow Editing Services video-editing project | the root node that contains all the other objects.| |
| 46 | |ProjectID110:track| | |track| | |A collection of nonoverlapping sources with a common media type (audio or video).| |
| 47 | |ProjectID110:trans_in_place_filter| | |trans-in-place filter| | |A filter that can modify data without copying it to a new buffer.| |
| 48 | |ProjectID110:transform_filter| | |transform filter| | |A filter that receives data from an upstream filter | processes it | and then delivers it to the next filter in the graph.| |
| 49 | |ProjectID110:transport| | |transport| | |A mechanism for moving data from one point to another. In a filter | the transport moves media samples across pins. In an external device such as a DV camcorder | the transport channels data from the device to a computer | or from the computer to the device.| |
| 50 | |ProjectID110:upsample| | |upsample| | |To increase the number of audio samples or pixels | through a process such as interpolation.| |
| 51 | |ProjectID110:virtual_track| | |virtual track| | |In DirectShow Editing Services | any object that can be contained in a composition.| |
| 52 | |ProjectID110:weave| | |weave| | |A method to display interlaced video. In weave mode | alternating fields are combined into a single image.|
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