Making simple crop edits to videos of all formats shouldn't be tricky business, but most tools out there either do way too much or are so belabored with ads that no one knows what evil lurks within their code.
Open source on the GNU license, Avidemux for Windows and Mac is a breath of fresh air. Cropping a video is as simple as highlighting a section to remove and then hitting the Delete key. Re-encoding a video is equally painless: select the output format from the drop-down list, save the file, and you're good to go. When choosing where to start and stop a crop, there's both incremental and multisecond advance and rewind tools, There's also a substantial list of video and audio codecs that files can be converted to. Multiple video and audio formats are supported, including all the major ones.
The program also includes advanced options, including generic decoder and post-processing tools, user-defined filters, GlyphSet adjustments, and more. Avidemux should appeal to users of all abilities who are looking for a quick way to edit down video files.