Requirements for AVED processing

AVED is designed to process individual images, therefore video must be broken apart into individual image "frames" before processing.

About Transcoding and Transcode

Transcoding is the digital-to-digital conversion of one encoding to another.

The provided MBARI scripts use a tool called transcode to convert video into to individual PPM for processing. Therefore, for this project, it is required to convert video into a a format transcode can convert into into PPM frames.

UC Davis Video Specification

UC Davis cameras produce video that will need to be converted into a format supported by transcode

UC Davis camera video format :

track 0: 640x480 29.97 fps 1953.70 kbits/sec data rate
track 1: audio, Stereo, 48.000 KHz

Time code support If time code support is needed, we'll need to install the MBARI custom transcode and need to record ISO8601 convention (see below). This would record the events by time code, instead of by frame number. This might be useful to referencing with ancillary data, for example. IS8601 File naming convention To support timecode, files need to be named according the UTC time of the first frame following the ISO8601 conventions. For example: 20080607T120256.mov,20080607T120256.avi. For example, 20080607T120256.mov represents a clip recoded on June 7th, 2005 (06-07-2008), and the recording started at 12:02:56 UTC.

UCD_AVED_video_transcode_activity.jpg (image/jpeg)