On Mon, December 21, 2015 5:19 am, Tim Shoppa wrote: > Are there any standard consumer-type audio file formats, that support > absolute time time/datestamps?
Broadcast WAV file (BWF) is probably the closest. I'm not sure what different timecode formats are possible, but this description of how Avid and Final Cut import time code from BWF files probably indicates what is commonly used. I think the usual timecode roles over every 24 hours, I'm not sure there is a standard way to attach calendar date. Could be a way that just isn't decribed here: BWF Time Code The recorded files generated by Sound Devices 7-Series recorders and the 552 mixer contain extensive metadata describing their contents. This metadata is stored in the BeXT and iXML chunks within the Broadcast Wave format. To represent time code the primary metadata parameters include: Start TC: stored in both the bEXT and iXML chunks as a Samples Since Midnight value. TC frame rate: This is the frames per second rate. It is also used to convert the HH:MM:SS:FF time code value to a Samples Since Midnight value and visa versa. It is stored in the bEXT chunk as the SPEED parameter and in iXML as the TIMECODE_RATE parameter. Sampling Rate: This is stored in the fmt (format) and iXML chunks. This tells the playback device at what speed to playback the file, typically 48 kHz in sound-for-picture applications. -- Chris Caudle _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.