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IOS Video Tool Box后台解码失败

---恢复内容开始---

1、VideoToolBox硬件解码H264流的过程中,如果App从前台按Home键进入后台,会立马产生一个-12903的错误

   如果这个时候重置解码器,继续解码,会遇到 -12911的错误 ,-12911代表一种数据错误

kVTPropertyNotSupportedErr    = -12900,
kVTPropertyReadOnlyErr     = -12901,
kVTParameterErr       = -12902,
kVTInvalidSessionErr     = -12903,
kVTAllocationFailedErr     = -12904,
kVTPixelTransferNotSupportedErr   = -12905, // c.f. -8961
kVTCouldNotFindVideoDecoderErr   = -12906,
kVTCouldNotCreateInstanceErr   = -12907,
kVTCouldNotFindVideoEncoderErr   = -12908,
kVTVideoDecoderBadDataErr    = -12909, // c.f. -8969
kVTVideoDecoderUnsupportedDataFormatErr = -12910, // c.f. -8970
kVTVideoDecoderMalfunctionErr   = -12911, // c.f. -8960

  

当继续遇到I帧以后,后续的解码将会正常,也就意味着,解码器在后台可以工作

2、硬解过程中从后台切换到前台,工作状态不受影响

 

测试环境:iphone5s 10.2

IOS Video Tool Box后台解码失败