The string refers to a specific digital release of James Cameron's 2009 film Avatar . Each part of this label provides technical details about the video file:
Short for "Blu-ray Rip," meaning the file was encoded from a retail Blu-ray disc source. subtitle Avatar.ECE.2009.720p.BrRip.x264.bitlok...
This is likely a "release tag" or the username of the individual or group who encoded and uploaded this specific version of the movie. Subtitle Compatibility The string refers to a specific digital release
The video compression codec used to keep the file size manageable while maintaining quality. Subtitle Compatibility The video compression codec used to
Because this is the , standard subtitles for the original theatrical version will not work. They will quickly fall out of sync because the ECE version is approximately 178 minutes long, whereas the theatrical version is only 162 minutes.