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Hello. First of all, I apologize for my English (I'm Italian). I write here because I have a problem with transcoding. I have a system based on APU AMD Ryzen 2400G (VEGA 11 video card, lastest driver), windows 10 pro 64bit (with lastest update), 16GB ram, etc. With none of my files (all HEVC) I can make transcoding work. The encoding in h264 works (in the task manager I see that the video card is engaged at about 20%, the encoding section is 50% engaged) while the decoding is not (the decoding section remains at 0% while the cpu with video in 4k goes to 70 %). I have already changed ffmpeg by putting a version with enabled -amf. The same videos are easily decoded by video card watching them with vlc, mediaplayer, etc. I enclose the two logs. The file in 4k is a 10bit HVEC from around 50Mbps, 1080p is a simple 8bit and 8Mbits HEVC movie. Thanks for your help. 4k.txt 1080p.txt