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Hey there, I am really new to this. I bought a J3455 apollo lake board to create my own small media server. The goal is to transcode x265 up to 4k/10bit. Someone over here got it working on his Synology with the same chip: https://forums.plex.tv/discussion/comment/1561297/#Comment_1561297 My problem is that ffmpeg doesnt seem to be able to use hardware acceleration correctly. It always falls back to the standard CPU transcoding. I use these files for testing: http://www.h265files.com/ All files play fine with hardware acceleration in MPC-HD. But transcoding always falls back to the CPU. I am using the latest Emby beta and tried different intel drivers. I attached the transcoding log. The most interesting part seems to be this: Stream mapping: Stream #0:0 -> #0:0 (hevc (hevc_qsv) -> h264 (h264_qsv)) Stream #0:1 -> #0:1 (copy) Press [q] to stop, [?] for help [hevc_qsv @ 0000025bb36044c0] Could not load the requested plugin '15dd936825ad475ea34e35f3f54217a6': specified object was not found (-9) [hevc_qsv @ 0000025bb36044c0] Error loading plugins [hevc_qsv @ 0000025bb36044c0] Error initializing an MFX session Error while decoding stream #0:0: Function not implemented [hevc_qsv @ 0000025bb36044c0] Error initializing the MFX video decoder: invalid video parameters (-15) Error while decoding stream #0:0: Invalid argument frame= 0 fps=0.0 q=0.0 size=N/A time=-577014:32:22.77 bitrate=N/A speed=N/A [hevc_qsv @ 0000025bb36044c0] Error initializing the MFX video decoder: invalid video parameters (-15) Error while decoding stream #0:0: Invalid argument [hevc_qsv @ 0000025bb36044c0] Error initializing the MFX video decoder: invalid video parameters (-15) Error while decoding stream #0:0: Invalid argument [hevc_qsv @ 0000025bb36044c0] Error initializing the MFX video decoder: invalid video parameters (-15) Error while decoding stream #0:0: Invalid argument [hevc_qsv @ 0000025bb36044c0] Error initializing the MFX video decoder: invalid video parameters (-15) Error while decoding stream #0:0: Invalid argument transcodinglog.txt serverlog.txt