"Placebo" provides negligible gains for massive time costs.
If you are trying to drastically shrink a video file, tweaking the codec settings might not be enough. You can achieve massive file size reductions by altering the video's resolution or dimensions:
When shrinking x265, you are fighting against the codec’s core design: it was built to preserve detail at low bitrates, but only if you configure the psychovisual optimizations correctly. shrinking x265
Use the Slow or Slower preset if time allows. Slower presets use more advanced algorithms to pack data more efficiently, resulting in better quality at the same file size.
But simply using x265 doesn't automatically solve your storage problems. The phrase has become a mantra for those looking to squeeze a 50GB Blu-ray rip down to a manageable 5GB or 10GB file. "Placebo" provides negligible gains for massive time costs
Shrinking with x265 is not simply a "one-click" process. It requires understanding the source material. For clean, digital sources, aggressive CRF settings combined with slow presets yield massive space savings. For grainy, analog sources, a more delicate touch is required to prevent the destruction of the film's organic texture.
I can provide a step-by-step custom configuration based on your needs. Share public link Use the Slow or Slower preset if time allows
For 1080p video, an RF of 22–24 is generally recommended.
-crf 23 : Sets the quality target. Raise this number (up to 28) for smaller files; lower it for higher quality.
You cannot shrink a 4K movie below 4GB without it looking like a 1990s RealPlayer file. Physics applies.
H.265, also known as HEVC, was explicitly designed to compress video content down to half the bit rate of its predecessor (H.264/x264) while maintaining the same level of visual quality. It achieves this through advanced algorithms, such as larger Coding Tree Units (CTUs) that can partition video frames into blocks varying from 16 × 16 to 64 × 64 pixels. It also uses highly complex motion vectors and improved in-loop filtering.