LEAD has created two proprietary formats to support DVR:
|.LBL||LEAD Buffer List|
|.LRC||LEAD Recording Chunk|
The .LBL file specifies which .LRC files are used as underlying storage, as well as the playback ranges and their mappings to .LRC file data offsets.
Direct Show .NET | C API | Filters
Media Foundation .NET | C API | Transforms