From site:
Alparysoft Lossless Video Codec is for encoding (compression) and decoding (decompression) of video.
Without any mathematical losses (i.e. source and destination video are absolutely identical after encoding/decoding process), the compression ratio is twice - 5 times.
Without any visual losses, i.e. human eye won't be able to see any difference between source and destination video, the compression ratio is 5-15 times.