Check FFV1 Fixity

Problem

Check fixity of an FFV1 file (version 3).

Solution

ffmpeg \
    -i input_file \
    -f null \
    -

Command syntax

ffmpeg
starts the command
-i input_file
path, name and extension of the input file
-f null
decodes the video with the null muxer, which allows to decode the video without creating an output file
-
a placeholder is needed, because the FFmpeg syntax requires an output file

Discussion

This decodes the video and displays any CRC (cyclic redundancy check) checksum mismatches. Note that computing of CRC checksums at frame level is enabled by default in FFV1 version 3.


2020–07–15