NAME¶

videowmark - video watermarking tool (using audio track)

SYNOPSIS¶

videowmark [options] command [args...]

DESCRIPTION¶

videowmark creates watermarked video files containing an embedded message, and can retrieve an embedded message from a previously watermarked video.

Messages are provided as hexadecimal data and embedded in a way intended to be robust against common video processing operations.

COMMANDS¶

add input_video watermarked_video message_hex

Create a watermarked video file containing the provided message.

get watermarked_video

Retrieve the embedded message from a watermarked video and print it to standard output.

GLOBAL OPTIONS¶

These options apply to all commands.

--strength s

Set watermark strength.

--key file

Load watermarking key material from file.

-q, --quiet

Disable informational messages.

-v, --verbose

Enable verbose output from the underlying ffmpeg processing.

ARGUMENTS¶

input_video

Path to the input (unwatermarked) video file.

watermarked_video

Path to the output (watermarked) video file (for add), or the input watermarked video file (for get).

message_hex

Message to embed, provided as hexadecimal bytes.

EXAMPLES¶

Embed a message into a video:

videowmark add input.mp4 output.mp4 68656c6c6f

Retrieve a message from a watermarked video:

videowmark get output.mp4

EXIT STATUS¶

0

The operation completed successfully.

>0

An error occurred.

SEE ALSO¶

ffmpeg(1)

AUTHOR¶

videowmark is part of the audiowmark project and was written by Stefan Westerfeld <stefan@space.twc.de>.

This manual page was written and maintained for Debian by Christopher Obbard.

COPYRIGHT¶

Copyright © 2018-2020 Stefan Westerfeld <stefan@space.twc.de>. Licensed under the GNU General Public License, version 3 or later.