Revelation Sight & Sound

Rendering and File Formats

Rendering is the last step of editing a movie or a radio programme. It converts your project into one video clip or one audio clip, putting together all sources, effects, transitions and all their properties as you designed.

When your movie is complete, you will want to show it to your friends and family. To do this you must render it. Rendering is a process which creates a finished film or programme from your project. Many people find this a difficult concept.

Assets are stored in folders in the Video and Clips Stage or the Music and Sounds Stage. Movies that you are editing are saved as projects. Rendering creates a finished movie that can be emailed, put on Websites, or DVDs, and projected onto large screens. You will still keep all of your assets so you can re-edit and re-render the movie as often as you like.

Click on the 'Render' button on the Toolbar.

You will see the Render Stage.

Before you can start rendering some parameters must be set. This can be carried out in the Rendering dialogue box, which is shown in the stage area after selecting the Rendering stage.

Choose a file format. Revelation Sight and Sound will automatically set the optimum size, frame rate and compression based on the quality of your assets but you can change these if you wish. Press the 'Render button', give your work a filename, and save your movie.

In general, you have to select the output format by using the buttons at the top, then select the video resolution (if the file contains any video) and compression quality and finally click on the Render button.

However, several of these steps may be omitted because all the settings are pre-set to reasonable defaults. So a user who does not want to know much about output formats, qualities and bitrates can just click on the Render button and Revelation Sight and Sound will create a reasonable quality output file.

Note: Medium video size and medium frame - rate are best for most projects as these make small files and are quick to render.

Choosing a file format

Picture and Sound:

(Windows Media Video). Use this for films that will be shown on PC computers.

This is the best format. It has a very small file size, is high quality and can be viewed on all modern equipment including many video phones.

This format is uncompressed. It means you can edit your assets many times without losing quality by compressing the file. File sizes are huge so you will need a big hard disk and a very fast computer to use this option.

This is the old standard format for PCs. File sizes are large, and quality is worse than WMV or MP4.

As AVI but compressed for a smaller file size. You may experience some loss of quality. Don't use this unless you understand what you are doing.

Sound only:

(Windows Media Audio). Use this for sound that will be heard on PC computers or made into Music CDs to play on home stereo equipment.

A very popular format for sound and music files.

Can be played on portable MP3 players.


This is the process by which multimedia files can be shared on websites.

The file starts to play without waiting for the download to finish.

WMV and MP4 contain sounds and pictures, WMA contains sound only.

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Software Features

Free Resources


Digital Video in the Curriculum

Rendering and File Formats

Gallery of Work

Useful Links

Keyboard Shortcuts

Minimum Specification

Current software v.1.088d
"A terrific software pack to create radio programmes, slideshows, documentaries & films, complete with an excellent activity guide."
TES Online

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Holgate City Learning Centre

"... by people who want to release video-making from the clutches of the media police."
TES Online