: "0 length" files often have corrupted index or header data, meaning the media player cannot determine how long the video is.
: AVI is an older "container" format. Modern players may struggle to open them if they use outdated or obscure codecs like Xvid. Troubleshooting Tips Xvid MP4 AVI and SMI Files - Spreadys.blog - WordPress.com
: If a recording or download is interrupted, the resulting AVI file may be unplayable despite having a large file size.
: Windows and other operating systems often add "(1)" to a filename when a duplicate is saved in the same folder. A file named 0.avi that is downloaded or saved twice becomes 0 (1).avi .
: Some software, like NVIDIA's GeForce Experience , has been known to randomly create and save AVI files in folders like "Captured". These files are often fragments of recorded gameplay or desktop activity that the user didn't intentionally save.