Larwood
This's right:
23:17:43.864; ===== Detected playback with ffdShow. AppName: mpc-hc.exe, PID: 6844, supports 4GB RAM
23:17:43.875; used avisynth.dll: Avisynth MT, 2.5.8.6 (SVP edition) (CRC32:5ED58E27) from e:\Program Files\SVP\MPC-HC\
This's wrong:
21:18:06.283; ===== Detected playback with ffdShow. AppName: mpc-hc.exe, PID: 4916, supports 2GB RAM ONLY. Patch video player executable with "4GB Patch"
21:18:06.408; used avisynth.dll: Avisynth MT, 2.5.8.6 (SVP edition) (CRC32:5ED58E27) from C:\WINDOWS\system32\
Are you sure this's the same .exe running in both cases?
Besides, MPC-HC 1.7.9 is not working at all in pipe mode on my PC
HTTP mode is OK.