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moto authored
Summary: This commit changes the way torchaudio binary distributions are built. * For all the binary distributions (conda/pip on Linux/macOS/Windnows), build custom FFmpeg libraries. * The custom FFmpeg libraries do not use `--use-gpl` nor `--use-nonfree`, so that they stay LGPL. * The custom FFmpeg libraries employ rpath so that the torchaudio binary distributions look for the corresponding FFmpeg libraries installed in the runtime environment. * The torchaudio binary build process will use them to bootstrap its build process. * The custom FFmpeg libraries are NOT shipped. This commit also add disclaimer about FFmpeg in README. Pull Request resolved: https://github.com/pytorch/audio/pull/2355 Reviewed By: nateanl Differential Revision: D36202087 Pulled By: mthrok fbshipit-source-id: c30e5222ba190106c897e42f567cac9152dbd8ef
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