Time base correction

By adjusting the delay using a waveform monitor, the corrected signal can be made to match the timing of the other devices in the system.

Some high-end domestic analog video recorders and camcorders also include a TBC circuit, which typically can be switched off if required.

As far back as 1956, professional reel-to-reel audio tape recorders were mechanically stable enough that pitch distortion could be below an audible level without time base correction.

Some TBCs featured drop-out compensation (DOC) that enabled videotape flaws caused by oxide defects to be temporarily concealed.

The DOC logic required dedicated cabling between the videotape player and the TBC in which irregularities were detected in portions of the video image.

[7] TBC files can have their chroma decoded to a uncompressed YUV[d] or RGB video stream via ld-chroma-decoder[8] then encoded into a video file stream typically lossless compressed codecs like FFV1 in the MKV container format via tools like FFmpeg or tbc-video-export[9] (a wrapper for the ld-* tools and FFmpeg) ready for use in NLEs, the project built decoder can produce the full 4fsc signal frame or just the active picture area, thus allowing for better visual domain preservation then legacy hardware.

TBC file streams can also be directly played back to analog TV systems via a DAC.