ITL Multi Video Loader

Drop up to 8 video files onto the node; each gets its own video_N and audio_N output socket (sockets appear/disappear with the list, or pin output_slots to a fixed count so wires survive file edits). Each row has an on/off toggle: a switched-off row keeps its socket position but outputs None for video_N/audio_N (and filename_N on Advanced) — equivalent to leaving an unplugged OPTIONAL input, so don't switch off a row feeding a REQUIRED input. force_rate at 0 (default) keeps every clip's native rate and costs nothing to load; any other value retimes every clip to that rate (dropping or duplicating frames, real duration preserved) and requires decoding. A clip with no audio track outputs None for audio_N. count = number of files actually emitted (enabled rows), not the row count.