In　video　coding,　it　is　always　an　intractable　problem　to　compress　high　frequency　components　including　noise　and　visually　imperceptible　content　that　consumes　large　amount　bandwidth　resources　while　providing　limited　quality　improvement.　Direct　using　of　denoising　methods　causes　coding　performance　degradation,　and　hence　not　suitable　for　video　coding　scenario.　In　this　work,　we　propose　a　video　pre-processing　approach　by　leveraging　edge　preserving　filter　specifically　designed　for　video　coding,　of　which　filter　parameters　are　optimized　in　the　sense　of　rate-distortion　(R-D)　performance.　The　proposed　pre-processing　method　removes　low　R-D　cost-effective　components　for　video　encoder　while　keeping　important　structural　components,　leading　to　higher　coding　efficiency　and　also　better　subjective　quality.　Comparing　with　the　conventional　denoising　filters,　our　proposed　pre-processing　method　using　the　R-D　optimized　edge　preserving　filter　can　improve　the　coding　efficiency　by　up　to　-5.2%　BD-rate　with　low　computational　complexity.