Successive generations of photocopies result in image distortion and degradation.[3] It has been documented that successive repostings on Instagram results in noticeable changes.[4] Likewise, repeated postings on YouTube degraded the work.[5][6] Similar effects have been documented in copying of VHS tapes.[5] This is because both services use lossy codecs on all data that is uploaded to them, even if the data being uploaded is a duplicate of data already hosted on the service, while VHS is an analog medium, where effects such as noise from interference can have a much more noticeable impact on recordings.