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Audio/Video 3.01
Vocabulary 3.01
| Term | Definition |
|---|---|
| Sound wave | an audible vibration that travels though air or water |
| frequency | number of waves to pass a point in one second |
| amplitude | distance from rest to crest or rest to trough |
| wavelength | distance from crest to crest |
| crest | point that exhibits max amount of upward displacement from the rest position |
| trough | point that exhibits max amount of downward displacement from the rest position |
| pitch | the quality of the sound determined by the rate of vibration |
| sampling | process used to convert analog sound waves into digital data to be used by computers |
| sample rate | the number of samples taken per second, often measured in kHz |
| Bit rate (Depth) | number of computer bits process per unit of time |
| sample size | the number of bits used to save one sample |
| channel | single audio stream consisting a sequence of samples |
| mono | one channel |
| stereo | 2 channels- impression of human hearing |
| audio flie size | determined by the sample rate, sample size and number of channels used |
| MP3 File Format | MPEG-1 Audio Layer 3 |
| WAV File Format | Waveform file |
| OGG File Format | Ogg Vorbis |
| AIFF File Format | Audio Interchange File Format |
| Analog Video | video uses a continuous electrical signal to capture footage on a magnetic tape |
| Digital Video | videos that are made up of binary code. Represent the video image which computers can read |
| Capture | to record audio, video, or still images as a digital data in a file |
| Frame | a single picture of still shot in a video |
| frame rate | the number of video frames played per second |
| NTSC Television | 24 frames per second |
| resolution | number of pixels that can be displayed on a screen |
| 480p (720x480) | standard def |
| 720p (1280x720) | high def |
| 1080p (1920x1080) | high def |
| preproduction | tasks undertaken before production begins |
| brainstorming | produces ideas through spontaneous group discussion |
| script writing | the written text for your movie |
| storyboarding | a sequence of drawings, with directions and sometimes dialog, that represents planned shots for a movie |
| casting | finding appropriate people to plat the roles of the video |
| production | filming the video |
| field of view | the extent of what can be seen in a still or video shot |
| shot types | wide, medium, tight |
| panning | sweeping movement of a camera horizontally across a scene |
| zooming | gradually changing from a longer to shorter shot or vice versa |
| framing | the process of creating composition in your shots. Follow the rule of thirds |
| capturing video | importing video from the original recording device. |
| clips | small segments of a larger video |
| trim | to hide parts of a file or clip without deleting them from the original source |
| sequence | a variety of wide, medium, and tight video shots edited together |
| timeline | shows the components of the movie such as photos, video, audio clips and titles in the order and timing that they will appear in movie |
| rolling credits | include cast and credits for sources. |
| soundtracks | a musical recording that accompanies and is frequently synchronized with a video |
| sound effects | artificially created or enhanced sounds to emphasize content or enhance a creative point of view |
| narration | audio of one or more people that has been recorded to enhance or assist in telling the story for your video |
| transitions | the visual movements as one picture, video clip, or title changes to another |
| video effects | enable you to add special effects to your movie, such as vintage look or changing a video to black and white. |
| AVI movie format | audio video interleave |
| MOV movie format | movie |
| MPEG video format | Moving Picture Expert Group |
| FLV Movie Format | Flash |
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