Transcoding is commonly a , introducing; however, transcoding can be lossless if the output is either losslessly compressed or uncompressed. The process of transcoding into a lossy format introduces varying degrees of , while the transcoding from lossy to lossless or uncompressed is technically a lossless conversion because no information is lost, however the process is irreversible and is more correctly known as destructive.
The terms encoding and transcoding are occasionaly used interchangeably. The primary difference between the two is that encoding refers to the compression of raw data to a digital format, whereas transcoding comprises of video decoding from one format to an uncompressed format, and then re-encoding the uncompressed data to the desired digital format. Video transcoding is mostly used when a video file is transferred from a source to a different destination, wherein both the source and destination support different file formats
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