[FFmpeg-devel] mac, ios clock_gettime patch

Wang Bin wbsecg1 at gmail.com
Sun Feb 5 04:12:36 EET 2017

> dyld: Symbol not found: _kVTCompressionPropertyKey_H264EntropyMode

What system? kVTCompressionPropertyKey_H264EntropyMode is available since
macOS 10.9 and iOS 10.8. If targeting older system, we have to define it's
like kVTVideoDecoderSpecification_RequireHardwareAcceleratedVideoDecoder in

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