Chapter 16. Common tasks

Table of Contents

Adding subtitles to an existing DCP
Making a VF DCP
Making a complete DCP with projector-added subtitles
Making a complete DCP with burnt-in subtitles
Adding soundtracks or subtitles in different languages

This chapter describes how to carry out some commonly-required tasks with DCP-o-matic. The full details are elsewhere in the manual: here we just discuss different approaches to these tasks and how to carry them out.

Adding subtitles to an existing DCP

You have three options:

  • Make a “Version File” (VF) DCP.
  • Make a complete DCP with projector-added subtitles.
  • Make a complete DCP with burnt-in subtitles.

Making a VF DCP is usually the best option. This will be a very small DCP which contains only the subtitles: it refers to your existing DCP for the picture and sound. The projectionist will ingest both the existing and VF DCPs and play back the VF. The advantages of this approach are that the VF is very quick to generate, and small in size, making it easy to distribute. This is especially useful if you have to make VF DCPs in many different languages.

Making a complete DCP with projector-added subtitles gives you a new, single DCP which the projectionist can ingest and play. It will be the same size as your existing DCP, and fairly quick to create. This approach relies on the projector (or server) to create the subtitles and overlay them on the image, which mostly works well but is not 100% reliable.

Making a complete DCP with burnt-in subtitles gives you a new, single DCP but with the subtitles rendered by DCP-o-matic and copied into your image. This is slower to create than a DCP with projector-added subtitles as every video frame with a subtitle must be re-encoded. The advantage of this approach is that it is less likely to go wrong, especially if you are using unusual subtitle positioning or character sets.

Making a VF DCP

  • Start a new DCP-o-matic film.
  • Click Add folder... and specify your existing DCP's folder.
  • Go to the DCP tab and choose Split by video content for Reel type.
  • Go to the Video and Audio tabs in turn and tick the Refer to existing DCP checkboxes.
  • Add your subtitles to the film in whatever format you have.
  • Check the subtitle appearance in the preview; it will be slow to respond as it is having to decompress images from the existing DCP.
  • Choose Make DCP from the menu.

Making a complete DCP with projector-added subtitles

  • Start a new DCP-o-matic film.
  • Click Add folder... and specify your existing DCP's folder.
  • Add your subtitles to the film in whatever format you have.
  • Check the subtitle appearance in the preview; it will be slow to respond as it is having to decompress images from the existing DCP. Adjust the appearance using controls in the Subtitle tab if required.
  • Choose Make DCP from the menu.

Making a complete DCP with burnt-in subtitles

  • Start a new DCP-o-matic film.
  • Click Add folder... and specify your existing DCP's folder.
  • Add your subtitles to the film in whatever format you have.
  • Go to the Subtitle tab and tick the Burn subtitles into image checkbox.
  • Check the subtitle appearance in the preview; it will be slow to respond as it is having to decompress images from the existing DCP. Adjust the appearance using controls in the Subtitle tab if required.
  • Choose Make DCP from the menu.