A tool to analyze audiovisual experiment recordings and transcripts Jens Lammert jens.lammert@st.ovgu.de 2012 2013 Otto-von-Guericke Universität Magdeburg The following document illustrates how to install, configure and use the Experiment Player to analyze experiments.

https://github.com/rhaberkorn/experiment-player

To install the Experiment Player on a Windows-based operating system, the GTK+ 2 widget toolkit must first be downloaded and installed. A convenient GTK+ installer can be downloaded from the "GTK+ for Windows Runtime Environment Installer" project page. It is only necessary to install the GTK+ runtime. Additional themes may be installed as well - but the default GTK+ theme should be sufficient. Precompiled Windows 32-bit binaries of the Experiment Player itself are available as ZIP archives from the Sourceforge project page. The ZIP archive merely has to be extracted somewhere. Afterwards the included experiment-player.exe can be executed. All library dependencies except GTK+ are included in the ZIP archive.

To install the Experiment Player on a Linux-based operating system, it first has to be built from source. It can either be built from a local Git repository clone, or from a source code package that can be downloaded from the project's download archive on Sourceforge. In either case, further build instructions are given in the included INSTALL file.

After starting the experiment-player video-files and transcripts can be loaded. To open files first choose a directory in menue QuickOpen entry Choose directory. Select any directory that contains the desired data. If there are a XML-file and an AVI or MP4-file with an identical name the data will bei listed under QuickOpen. For example 20111117.xml and 20111117.mp4. The last chosen directory will be saved as default value and will be selelected automaticly the at the next start. If the transcript is opened and a files was selected the transcript widget shows the dialog between proband and wizard. The dialog monitor is divided up into two seperate widgets so there can be different settings and fonts at each widget. Also it is possible to markup matches separate from each other. There two way to search matches: regular expressions and format files.

For more information how to use regular expressions have a look at glib documentation for Perl compatible regular expression. Regular expressions are case-insensitive so both lower-case and upper-case character will match the same expression. Regular expression matches will be formated bold by default. Captures are not be supported.

By default a search term will be regarded as regular expression. If the markup toggle is activated the input expression will be regarded as format expression which is a combination of regular expression and Pango mark up. That means if the regular expression matchs at the text the markup expressions will apply. For more information refer to the Pango Markup documentation..

Format files are collection of multiple format expressions. At first there has to be selected a quick open directory in menue Format entry Choose Directory. After that all available format files in the selected directory will be listed under menue Formats. To create an own format file care the following: Each line will regarded as a single mark up statement. Leading whitespace characters will be ignored. A line beginning with '#' will be ignored complete. Only whole lines can be ignored. The format file has to save as a FMT-file (*.fmt). Incorrect lines will cause an error message. Let be the whole text referring to a single time stamp a text fragment. For each text fragment each format expression in the format file will be iterated and the associated regular expression will matched. For each match all associated mark ups will apply cumulatively at the matching text.

The config file is located in the users default directory where each config files are. By editing the config-file default keys which can not changed via gui can set. More details about the structure of the config file can be found in the glib documentation. The following table shows all additional keys :

Key	Description
Default-Format-Font	For detailed information follow pango font description
Default-Format-Text-Color	An RGB color specification such as '#00FF00' or a color name such as 'red'
Default-Format-BG-Color	An RGB color specification such as '#00FF00' or a color name such as 'red'