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Audio-to-video synchronization (AV synchronization, also known as lip sync, or by the lack of it: lip-sync error, lip flap) refers to the relative timing of audio (sound) and video (image) parts during creation, post-production (mixing), transmission, reception and play-back processing.
Sound cannot be recorded on a VHS tape without recording a video signal because the video signal is used to generate the control track pulses which effectively regulate the tape speed on playback. Even in the audio dubbing mode, a valid video recording (control track signal) must be present on the tape for audio to be correctly recorded.
Dubbing (also known as re-recording and mixing) is a post-production process used in filmmaking and the video production process where supplementary recordings (known as doubles) are lip-synced and "mixed" with original production audio to create the final product.
Noise, static or snow screen captured from a VHS tape. Noise, commonly known as static, white noise, static noise, or snow, in analog video, CRTs and television, is a random dot pixel pattern of static displayed when no transmission signal is obtained by the antenna receiver of television sets and other display devices.
YouTube TV is an American Internet Protocol television service operated by YouTube, a subsidiary of Google, which in turn is a subsidiary of Alphabet Inc. Announced on February 28, 2017, [2] the virtual multichannel video programming distributor offers a selection of live linear channel feeds and on-demand content from more than 100 television networks (including affiliates of the Big Three ...
1989: Test broadcasts for NICAM stereo digital audio for broadcast TV began in the UK. 1990: Digital radio begins in Canada, using the L-Band. [51] 1991: Alesis Digital Audio Tape is a tape format used for simultaneously recording eight tracks of digital audio at once, onto Super VHS magnetic tape – a format similar to that used by consumer VCRs.
Test cards typically contain a set of patterns to enable television cameras and receivers to be adjusted to show the picture correctly (see SMPTE color bars).Most modern test cards include a set of calibrated color bars which will produce a characteristic pattern of "dot landings" on a vectorscope, allowing chroma and tint to be precisely adjusted between generations of videotape or network feeds.
In 1973, the one-pulse-per-frame technique was used to control recording directly onto sprocketed magnetic film in the Super8 Sound Recorder. [7] The Super8 Sound Recorder could also "resolve" sound that had been recorded onto cassette tape with this new "digital" sync pulse. [8] Today, digital video cameras and digital sound recorders ...