x265 encoding error.

[Selur]

Okay, you are feeding an Avisynth script into Hybrid.

MKV="C:\Users\cebol\Desktop\ENCODES\HYBRID\Material Los juegos del hambre - Balada de pajaros cantores y serpientes\Los juegos del hambre DV.mkv"


BL=FFVideoSource(MKV).z_ConvertFormat(bit_depth=16).libplacebo_Tonemap(src_csp=3, dst_csp=1).z_ConvertFormat(pixel_type="YUV420P16", chromaloc_op="top_left=>top_left", resample_filter="spline36")
EL=FFVideoSource(MKV.ReplaceStr(".mkv", "_EL.mkv"))

MapNLQ(BL, EL)
z_ConvertFormat(pixel_type="YUV420P10", dither_type="error_diffusion")
Prefetch(2)


z_Spline36Resize(dither="error_diffusion", 1920, 804, 0, 276, -0, -276)


SelectRangeEvery(8000,400)



return last

Since Avisynth 32bit is selected, Hybrid assumes the Avisynth script belongs to 32bit Avisynth.
The decoder call:

"C:\Program Files\Hybrid\32bit\ffmpeg.exe" -y -loglevel fatal -noautorotate -nostdin -threads 8 -i "C:\Users\cebol\Desktop\ENCODES\MapNLQ.avs" -an -sn -vf format=yuv420p10le,scale=1920:804 -color_primaries bt709 -color_trc bt709 -colorspace bt709 -color_range tv -pix_fmt yuv420p10le -strict -1 -vsync 0 -sws_flags spline -f yuv4mpegpipe -

fails decoding the script, probably, since it assumes that the script loads everything it nees, which it does not.
Note that Hybrid comes with it's own Avisynth, but your script is only compatible with some external Avisynth.

Cu Selur