Rémi Bernon (@rbernon) commented about dlls/mfsrcsnk/media_source.c:
if (rate < 0.0f) return MF_E_REVERSE_UNSUPPORTED;
- if (thin)
return MF_E_THINNING_UNSUPPORTED;
All the previous changes are effectively dead code until this change, this should generally be avoided so that bisecting works.