02_Introduction: File Structure and Labelling

This blogpost covers the structure of the files you will receive for the coding of video interactions within ELAN.  

File structure

For each video interaction (i.e., each participant), you will receive several files: 

*.eaf - ELAN coding file

*.pfsx - ELAN coding file 

*.eaf.001 - ELAN coding file (note, not all participant folders include this file)

*.mp4 - video interaction file 

*.wav - audio interaction file (note, wav files are specific to speech coding only) 

File labelling 

ELAN coding files are labelling in the following format: participant ID number, time-point, assessment type, length of interaction, coding dimension (for example; 057_10M_MKI_5-min_D2_TOUCH). 

Media files are labelled in the following format: participant ID number, time-point, assessment type, length of interaction, video quality (for example; 057_10M_MKI_5-min_1280x720). 

It is important that no files are removed or deleted. All files related to the same participant must be kept within the same folder. In addition, it is important that no files are  renamed as this will interfere with the ELAN program.

Figure 1: Image depicting the file structure and labelling