While there is no public record of a specific "long piece" associated with this exact string, File Characteristics
: If you are trying to find where this file originated, check your recent downloads or the "Details" tab in the file properties to see if there is any author or source URL metadata. 0gmezgmey3urzv2jdgilq_source.mp4
: The random string 0gmezgmey3urzv2jdgilq is likely a unique hash used to prevent naming conflicts on a server. How to View or Manage the File If you have this file and need to work with it: While there is no public record of a
Unable to export specific project file as MP4 at 1080p #5668 - GitHub capable of storing video
: The suffix _source suggests this is the original, high-quality version of a clip before it has been compressed or transcoded for specific web resolutions (like 720p or 1080p).
: The .mp4 extension indicates it is a digital multimedia container based on the MPEG-4 Part 14 standard, capable of storing video, audio, subtitles, and metadata.
Are you trying to of this specific file, or do you need help editing it into a longer video?