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COLONFILM

DCP OR MP4?The right file for each stage.

By David Colón & Flor · COLONFILM

Before you deliver

Screener. Exhibition. Cinema.

What festivals ask for when you submit, when you are selected and when your film is projected.

Festival technical requirements can be confusing the first time. The same festival may ask for an MP4 link when you submit, a ProRes file for its online platform and a DCP for the cinema screening. They are different files for different jobs, and sending the wrong one can cost you a slot in the programme.

Stage 1: submission — the screener

When you submit, programmers only need to watch the film. A private link to an H.264 MP4 on Vimeo or the submission platform is standard. It should be your final cut, with burned-in English subtitles if the film is in another language, because many programmers watch in English.

Stage 2: selection — the exhibition copy

Once selected, the festival sends its technical requirements. For cinema screenings, most ask for a DCP. Some smaller festivals or venues accept a high-quality file instead, usually ProRes 422 HQ or a high-bitrate H.264. Online sections may ask for a separate file with specific settings. Always follow the festival's document — never assume.

What a DCP is

A Digital Cinema Package is the standard format that cinema servers play — the digital equivalent of a film print. It is not a single video file but a folder: picture encoded in JPEG 2000, sound as uncompressed multichannel audio, subtitle files and XML files that describe how everything fits together. Cinema servers are strict: a DCP with an error may simply not play.

The decisions behind a DCP

  • Container: Flat (1.85:1) or Scope (2.39:1), chosen from your film's aspect ratio so nothing is cropped.
  • Resolution: 2K is standard for festivals; 4K only if requested.
  • Frame rate: usually 24 fps; 25 fps material needs attention.
  • Standard: SMPTE or Interop, depending on the festival.
  • Sound: stereo or 5.1, mapped to the correct channels.
  • Subtitles: as separate tracks or burned in, as requested.
  • Encryption: festival copies are usually unencrypted; encrypted DCPs need KDM keys.

Can I make a DCP myself?

Free tools such as DCP-o-matic can create a DCP, and for a simple short with stereo sound it is possible to do it yourself. The risk is in the details: colour conversion that leaves the image washed out, wrong channel mapping that puts dialogue in the wrong speaker, subtitles out of the safe area, or a file that fails on the festival's server the day before your screening. If you do it yourself, always test it on a DCP player and, ideally, in a cinema.

Our festival DCP service

We convert your final master into a verified DCP, check it from start to end and deliver it online with a verification report. A short film DCP is $295, a feature DCP with up to two subtitle languages and a matching screener is $695, and $1,290 includes English ⇄ Spanish subtitle translation. See the festival DCP packages.

Before ordering, go through our checklist of files to prepare.

READY TO MAKE IT REAL? That’s the day job.

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