This is a clone of FFmpeg with some enhancements on HTTP live streaming

- Each variant belongs to a program. This avoids issue of fetching two separate
variants for video and audio respectively.
- Follow http redirection for manifest file. This is needed for some Live Streaming

FFmpeg README
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1) Documentation
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* Read the documentation in the doc/ directory in git.
  You can also view it online at https://ffmpeg.org/documentation.html

2) Licensing
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* See the LICENSE file.

3) Build and Install
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* See the INSTALL file.