what is bitcrusher fr?

BitCrusher shrinks video, audio, image, and PDF files down to a specific target size, without going over it. This is useful for places like Discord that limit how large an uploaded file can be, so instead of guessing at settings, you just tell it the file and the size you want, such as 10 megabytes, and it handles the rest. Under the hood, it tests your requested video format against a newer format called AV1 and measures the actual visual quality of each using a standard called VMAF, then picks whichever one looks better for the same file size. It also applies extra processing steps, like reducing noise or blocky artifacts, but only keeps them if they actually improve the result, rather than applying them automatically every time. There is a mode to keep one specific moment of a video looking sharper than the rest, useful for a clip everyone is going to focus on. Beyond single files, it can watch a folder and automatically compress anything dropped into it, send a message to a Discord webhook when done, and remembers past compression jobs to make smarter choices on new files over time. The tool includes both a desktop application with a visual interface and a command line version for people who prefer typing commands or writing scripts. The author includes a benchmark table showing real compression results across different types of source video, including a concert video shot in low light that was compressed to about an eighth of its original size while still looking good throughout, including its worst individual moment, not just on average. To run it you need Python 3.10 or newer installed, and the tool will automatically download the video processing programs ffmpeg and ffprobe the first time you run it if they are not already present. It works on Windows, macOS, and Linux, and is released under the GNU General Public License version 3.