The overall bit rate of your media file, in bits per second. This is derived from the file size and duration as (file size in bytes * 8) / duration in seconds.
The format of your media file. For example: MP4, QuickTime (MOV), Matroska (MKV), WebM, MXF, Wave, AVI, MPEG-TS, MPEG-PS, or MP3. Note that this will be blank if your media file has a format that the MediaConvert Probe operation does not recognize.
The start timecode of the media file, in HH:MM:SS:FF format (or HH:MM:SS;FF for drop frame timecode). Note that this field is null when the container does not include an embedded start timecode.