Avidemux vs ValiDrive

Avidemux has no write-up on Specifiction yet; its figures are above.

ValiDrive is a free Windows utility for quickly spot-checking USB mass storage drives for deliberately missing storage. It tests 576 evenly spaced locations with random data, checking whether each location can store and retrieve information. Before testing a region, it reads the original contents and rewrites them afterward, restoring what was there. The utility detects internal RAM caching and adjusts transfer size when needed to bypass it. A drive map labels each tested location as validated, read error, write error, or no storage. The final report summarizes read and write access times with minimum, maximum, average, median, and variance values. The maker describes this as a quick, cursory check rather than a comprehensive deep test of storage media. While running, it briefly checks for updates through an anonymous DNS query but does not update itself automatically. Listed releases are v1.0.0 from October 6, 2023 and v1.0.1 from October 8, 2023.