DCDM_3DSUB_XSLT

Tools for Digital Cinema 3D subtitles

the xslt stylesheet adds the attribute Zposition to every Text element in a DCDM subtitleReel

Requirements

• xsltproc for xml stylesheet transformation https://gitlab.gnome.org/GNOME/libxslt/-/wikis/home
• xmllint for validation https://gitlab.gnome.org/GNOME/libxml2/-/wikis/home

Workflow

1. create 2D srt sub in Davinci Resolve
2. Export srt subs to a file
3. Import srt to https://www.nikse.dk online Subtitle Editor
4. Download Subtitle as Digital Cinema Subtitle D-Cinema SMPTE 2014
5. edit the add_Zposition.xsl file for your own Zposition (default is -1.0)
6. run the XSLT transformation

Transformation

xsltproc -o MOVIE_SUBS_3D_with_Z.xml add_Zposition.xsl MOVIE_SUBS_2D.xml

Validation

xmllint --noout --schema DCDMSubtitle-2014.xsd MOVIE_SUBS_3D_with_Z.xml

Background

tools are used to prepare the stereoscopic 3D screening of the Busan International Short Film Festival BISFF. https://www.bisff.org/

Testing in 3D Cinema

the workflow was successfully tested in the Busan Cinema Center in different projection formats.

Comparaison burnt-in subtitles and rendered subtitles

2D subtitles overlay at negative 1% parallax over real images