OpenMediaLib User and Development Guide

• OpenMediaLib User Development Guide
  • Introduction
    • Terminology
  • High Level Use
  • Reverse Polish Notation
  • Applying RPN to Video/Audio
  • Clip Modifications
  • Compositing
  • Playlists
  • Stack Manipulations
  • Advanced Stack Usage
  • Aspect Ratio Considerations
  • The Encoding Filter Graph
  • Compositing Revisited
  • Really, Really Advanced Stack Usage
  • General Audio Issues
    • The Sample Calculator
    • Audio Resampling
    • Audio Mixing
  • Python
    • Python Callbacks and Filter Implementations
  • Interpolation
  • Threading

• Putting it All Together

• Appendices
  • Appendix A Input Operations
  • Appendix B Filter Operations
  • Appendix C Stores

Playlists

If you want to play a collection of video (or audio) out in sequence, then you can use the playlist filter.

An example of this would be:

<input1> <input2> filter:playlist slots=2

which would provide a graph like:

filter:playlist
  <input1>
  <input2>

The duration is the sum of the duration of the inputs.

Note that no frame rate, image size, audio frequency, colour space etc conformance is stipulated here – whether mixed formats is usable relies entirely on the capabilities of the recipient. You can enforce conformance by attaching the requisite filters to each of the inputs.