Abstract: The present disclosure describes a system, method, and computer program for encoding and decoding a unique signature for a user in a video file, wherein the digital signature is substantially invisible to the viewer of the video, easy to detect during the coding process, does not require specialized equipment for playback of the video, and is resilient to transcoding, video editing, and high compression encoding. A numeric digital signature is converted into a binary number. The binary number is then divided into sequences, where sequence includes a subset of data bits from the binary number. Each sequence is also associated with a sequence ID that enables the data bits in the sequence to be later combined in the correct order to recreate the binary number. A watermark is created for each of the sequences and embedded within suitable areas of a color channel.

Abstract: The present disclosure describes a system, method, and computer program for encoding and decoding a unique signature for a user in a video file, wherein the video file was created using a video format that does not specifically support embedding a unique signature in the video file. A unique signature, comprising a plurality of data bits, is associated with a user and divided into groups. For each group, a different sine wave is created for each bit in the group. The frequencies of the sine waves correspond to the types of bits, and the amplitudes of the sine waves indicate the values of the bits. Group signals are overdubbed on the infrasound range of the audio track of the video file. The unique signature is decoded from the video file by analyzing the frequencies and amplitudes of sine waves in the infrasound range of the audio track.