Shrinking X265 -

If you see multiple foreign language tracks you do not speak, click the on the right side to delete them. For the main audio track, change the codec to AAC or Opus .

CRF is the most important setting for quality-based encoding. Instead of forcing a specific file size, CRF targets a specific visual quality level. It allocates more data to complex, fast-moving scenes and saves space on simple, static scenes.

In HandBrake or FFmpeg, the Constant Rate Factor (CRF) determines quality. For x264, the standard is usually CRF 20–23. Because x265 is more efficient, you can actually raise this number.

Stick to software (CPU) x265 if file size is your priority. shrinking x265

Ensure that when compressing text-based subtitles, you are passing them through rather than "burning them into" the video frame, which forces the encoder to work harder on those specific pixels.

But a decade later, a strange trend has emerged: .

The Constant Rate Factor (CRF) is the single most influential setting for balancing quality and file size. CRF works on a scale from 0 (lossless, enormous file) to 51 (worst quality, smallest file). The lower the number, the higher the quality. For shrinking, you want to find the highest CRF value that still yields an acceptable visual result. If you see multiple foreign language tracks you

The following table provides a general guide for selecting the right CRF based on your intended use:

Choose your output destination file path, ensure the container format is set to or MKV , and click the green Start Encode button at the top of the interface. Advanced Compression: Using FFmpeg Command Line

Lower numbers yield higher quality but larger files; higher numbers drastically reduce file size but risk introducing blocky artifacts. 2-Pass Target Bitrate Instead of forcing a specific file size, CRF

Shrinking x265 (HEVC) Videos: The Ultimate Guide to Small File Sizes Without Quality Loss

This is the most critical setting. For x265, an RF value between 20 and 24 is the sweet spot for 1080p video. For 4K video, you can push the RF slider to 24 or 26 . Higher numbers mean more compression but lower quality.

The preset determines how hard the encoder works to meet the quality target set by your CRF value. The x265 presets range from ultrafast (fastest, least efficient) to placebo (incredibly slow, maximum efficiency).