On 26/11/17 16:14, hydra3...@gmail.com wrote: > Most systems have a "clinfo" program which will list all the queryable > properties of the available devices. > >> From docs: > > -init_hw_device type[=name][:device[,key=value...]] > Initialise a new hardware device of type type called name, using the given > device parameters. If no name is specified it will receive a default name of > the form "type%d". > > -filter_hw_device name > Pass the hardware device called name to all filters in any filter graph. > > So, either give it a name explicitly or deduce what the name will be: > > -init_hw_device opencl=arbitrary_name:1.0 -filter_hw_device arbitrary_name > > or > > -init_hw_device opencl:1.0 -filter_hw_device opencl0 > > (There is some thought of adding an option -opencl_device working like > -vaapi_device to avoid the two steps for simple upload. The most useful > cases all use device derivation/mapping to keep things on the GPU side, > though, so I'm not entirely sure whether it's actually wanted.) > > - Mark > > ---------------------------------------------- > > OK and Thank you, Mark. > > One last question if I may, > >> Most systems have a "clinfo" program which will list all the queryable >> properties of the available devices. > > In both of these cases > -init_hw_device opencl=arbitrary_name:1.0 > -init_hw_device opencl:1.0 > > the device is seen to be "1.0" ... how does one determine that device "id" in > Windows 10 in order to use it ? > (I have a another PC with intel graphics plus a 1050Ti and need to specify > the 1050Ti) > > I tried to use a clinfo command in DOS under Win10 ... but no go. > Display Adaptor properties didn't show anything obvious to an end-user. > GPU Caps Viewer didn't show anything useful. > ffmpeg -init_hw_device list showed > Supported hardware device types: > cuda > dxva2 > qsv > d3d11va > opencl
The devices found will be listed when run with "-v verbose" (or higher). So, if you pass no additional options as in ffmpeg -v verbose -init_hw_device opencl you will get a list of all the devices with their names and indices. - Mark _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
