Why doesn't ffmpeg recognize my GTX 980 Ti as NVENC capable?
I tried to encode using both AVC and HEVC but both returned this error.
I have installed the latest nvidia drivers for my gpu.

coder.log file contents:
15:42:44.241: ===== Starting mpv ======
15:42:44.241: Command line: C:\Program Files (x86)\SVP 4\mpv64\mpv.exe F:/Anime/[ANE] Bakemonogatari [BDRip 1080p x264 FLAC]/[ANE] Bakemonogatari - Ep01 [BDRip 1080p x264 FLAC].mkv -o F:/Anime/[ANE] Bakemonogatari [BDRip 1080p x264 FLAC]/[ANE] Bakemonogatari - Ep01 [BDRip 1080p x264 FLAC].temporary.mkv --no-audio --no-sub-auto --input-ipc-server=mpvencodepipe --vf=vapoursynth:[C:\Users\arcon\AppData\Roaming\SVP4\scripts\ffff.py]:4:7 --ofps 143.856 --of=matroska --ovc=hevc_nvenc --ovcopts=b=26327618,rc=vbr_hq,preset=slow,profile=main,threads=7
15:42:44.313: Playing: F:/Anime/[ANE] Bakemonogatari [BDRip 1080p x264 FLAC]/[ANE] Bakemonogatari - Ep01 [BDRip 1080p x264 FLAC].mkv
15:42:44.322: (+) Video --vid=1 (*) (h264 1920x1080 23.976fps)
15:42:44.322: Audio --aid=1 --alang=jpn (*) (flac 2ch 48000Hz)
15:42:44.322: (+) Subs --sid=1 --slang=eng (*) 'gg/qIIq' (ass)
15:42:44.323: File tags:
15:42:44.323: Title: Hitagi Crab - Part 1
15:42:44.323: Opening video filter: [vapoursynth file=C:\Users\arcon\AppData\Roaming\SVP4\scripts\ffff.py buffered-frames=4 concurrent-frames=7]
15:42:44.505: Using conversion filter.
15:42:44.530: VO: [lavc] 1920x1080 p010
15:42:44.531: [encode-lavc] Opening video encoder: NVIDIA NVENC hevc encoder [hevc_nvenc]
15:42:44.920: [ffmpeg] hevc_nvenc: No NVENC capable devices found
15:42:44.920: [encode-lavc] unable to open encoder (see above for the cause)
15:42:44.920: [encode-lavc] vo-lavc: encoded 0 bytes
15:42:44.920: [encode-lavc] ao-lavc: encoded 0 bytes
15:42:44.920: Could not initialize video chain.
15:42:45.058: Video: no video
15:42:45.058: [encode-lavc] Called a function on a failed encoding context. Bailing out.
15:42:45.058: : 00:00:00 / 00:25:57 (0%)
15:42:45.064: Exiting... (Errors when loading file)
15:42:45.221: ===== mpv exited with code 2 =====