Compress
Make the file smaller while holding on to quality.
Reduce video noise settles grain and sensor static, in space and over time, without smearing away the real detail underneath it.
Video (MP4, MKV, MOV, AVI, WEBM, M4V, MPG, WMV and FLV).
Light and Medium settle noise at very little cost to fine detail. Strong removes more noise and can soften the very finest texture along with it -- try Medium first unless the footage is badly noisy.
Very little. Run on a clean clip, even Strong changes it by a fraction of a decibel -- not something you would see in playback.
Make the file smaller while holding on to quality.
Rewrite the file into another format.
Keep one section, or take several out of the middle.
Play several files back to back as one.