Problem
Error codes returned by transcoder
OutOfMemory = 1, WrongPointer = 2, UnsupportedFile = 3, UnsupportedCs = 4, (unspported color space) WrongData = 5, DecodeFailed = 6, Busy = 7, (file locked by another process) UnsupportedProperty = 8, EncodeFailed = 9, IncompatibleFiles = 10, NotInitialized = 11, (GPU missing or driver outdated) NeedMoreData = 12, NoAudio = 13, NotEnoughSpace = 14, ReadError = 15, WaveReadError = 16, UnsupportedResolution = 17, WriteError = 18, NoData = 19, NotSupportedByWrappingFormat = 22, NotAllowedConverison = 23, UnsupportedSymbol = 24, NotEnoughPaddings = 25, AbortedByTheUser = 26,
Most error codes are self-explanatory. Those that are not are covered below:
Error 11 - NotInitialized
Either there is no GPU or it is an unsupported GPU (extremely old mobile GPUs, as installed in eg 2012 iMac.
OR
It is a supported GPU but running an outdated CUDA version. The CUDA version must be 9.X or greater.