24.000 is typically used for feature film workflow where film is being shot at 24.000fps and audio is being imported and synced directly in Avid for post. Some studios prefer this as they need to deliver a movie theatrically first and the DCI spec is 24.000 and not 23.976 and they don’t have the time to QC all the stems for foreign and domestic when there is a sample rate conversion involved.
Television and other video related projects in NTSC based countries will shoot and record at 23.976. Indie films are done at 23.976 and will do a pullup later with SRC for a DCI if needed, but usually they have time to do so – not the big studio films with day and date releases and they are editing and mixing up to the last minute.
Michael
Michael Phillips