Dsc_3783.mkv -

: The .mkv extension stands for Matroska Video, a container that can hold multiple video, audio, and subtitle tracks.

Are you having this specific file, or were you trying to extract data from it? Can't find ".mkv" videos - Microsoft Q&A DSC_3783.mkv

It will provide a full breakdown, including the "General" info, "Video" stream details, and "Audio" formats. Troubleshooting Common Issues including the "General" info