Video
HandBrake Settings for Smaller Files on Mac (Presets, RF, Codec)
For a smaller file in HandBrake, choose the Fast 1080p30 or Fast 720p30 preset, set the video encoder to H.265, set Constant Quality to RF 26 to 28, and keep the audio at AAC 128 kbps. Higher RF means smaller and softer. Lower resolution shrinks it further.
How do I compress a video in HandBrake on a Mac?
- Open HandBrake and drop your video onto the window.
- In the Preset list, choose General > Fast 1080p30 (or Fast 720p30 for a smaller file).
- Open the Video tab. Set Video Encoder to H.265 for the smallest result, or H.264 for the widest compatibility.
- Under Quality, leave Constant Quality selected and move the RF slider. Start at 26.
- Open the Audio tab and check the codec is AAC at 128 kbps or lower for speech.
- Choose a destination, click Start, then compare the new file with the original.
The same job from Terminal with HandBrakeCLI (a preset plus a quality override; set the H.265 encoder in the app or with --encoder):
HandBrakeCLI -i input.mov -o output.mp4 --preset "Fast 720p30" -q 26What RF value should I use in HandBrake?
RF is HandBrake’s constant quality scale. It is the quality knob, not a size target: the encoder spends whatever bits it needs to hold that quality, so the output size depends on your footage. Lower RF is better quality and bigger. HandBrake documents its recommended ranges on its quality page.
We encoded one 20-second synthetic 1080p30 clip (56.7 MB, about 22.7 Mbps) at three RF values with each codec:
| RF | H.264 size | H.265 size |
|---|---|---|
| 20 | 55.3 MB | 48.1 MB |
| 24 | 32.3 MB | 19.6 MB |
| 28 | 13.9 MB | 8.6 MB |
The clip carries heavy added noise, which is expensive to encode, so RF 20 barely helped here. Clean footage such as a screen recording shrinks much more. Run your own file at two RF values and look at both. The pattern holds: H.265 is smaller at the same RF, and the gap widened at higher RF. The codec trade is covered in H.265 vs H.264.
Which HandBrake preset gives the smallest file?
Presets are bundles of settings. Resolution and quality set size more than the preset name does. On the same clip:
| Preset | Result | Size |
|---|---|---|
| HQ 1080p30 Surround | 1080p H.264, high quality | 55.2 MB |
| Fast 1080p30 | 1080p H.264 | 42.3 MB |
| Fast 720p30 | 720p H.264 | 16.6 MB |
| Custom: H.265, RF 28, 1080p kept | 1080p H.265 | 8.6 MB |
The built-in presets use H.264 for broad playback. If you want a smaller file than any preset gives, start from one and change the encoder to H.265 and RF to 26 to 28. Save it with Presets > Save New Preset so you do not redo it.
What else makes a HandBrake file smaller?
- Lower the resolution. Going from 1080p to 720p took the Fast preset from 42.3 MB to 16.6 MB on our clip.
- Cap the frame rate. Keep it at Same as source with Peak Framerate selected; do not force a higher rate.
- Slow the encoder preset. Slower presets (such as slow) find the same quality in fewer bytes but take longer. We used veryfast, so slower presets would likely shrink these files further.
- Trim the audio. Drop it to AAC 96 to 128 kbps for speech, or remove it if the clip is silent anyway.
For where each trick matters, see our general guide to reducing video file size on Mac.
Why will my HandBrake H.265 file not play everywhere?
H.265 (HEVC) plays on current Macs and iPhones, but older devices, some TVs and some web uploads reject it. Choose H.264 for anything going to a platform you do not control. If a site refuses the file, re-encode as H.264 at RF 24 to 26 and keep the container as MP4. For specific destinations, see compressing video for email.
When is Smol the wrong tool for this?
If you already use HandBrake and like its controls, stay with it. It is free, and it gives you fine control over chapters, subtitles, filters and queues. Smol will not match that.
Smol earns its $29 one-time price when you want fewer decisions: drop a folder of mixed files, pick a quality label or an exact CRF with a speed preset, and get an MP4, MOV, WebM or MKV copy next to each original. It also has a Finder Quick Action, and nothing is uploaded. It supports H.265 and H.264. Compare the two in HandBrake vs QuickTime vs Smol or the HandBrake alternative page.
How we checked this
Ran HandBrake 1.11.2 (HandBrakeCLI) on an Apple Silicon Mac with three built-in presets and RF 20, 24 and 28 for H.264 and H.265, encoder preset veryfast, on one synthetic noisy 20 s clip. Facts last checked . We make Smol, so treat our claims about it with the same care as any vendor’s, and see our editorial policy.
HandBrake settings: common questions
What is the best HandBrake preset for smaller files?
Start with Fast 1080p30, or Fast 720p30 if the screen is small. Then change the encoder to H.265 and set RF to 26 to 28. On our test clip that combination was the smallest 1080p result. Save it as your own preset.
What does RF mean in HandBrake?
RF stands for rate factor, HandBrake's constant quality setting. A lower number keeps more detail and makes a bigger file; a higher number discards more and makes a smaller one. It targets quality, not a file size, so the final size depends on the footage.
Should I use H.265 or H.264 in HandBrake?
Use H.265 for the smallest file when everyone who plays it has a recent Mac, iPhone or modern player. Use H.264 when compatibility matters more. In our test at RF 28, H.265 was about 38% smaller than H.264.
Can HandBrake make a video a specific size, like 25 MB?
It has an Average Bitrate option. Calculate bitrate as target size in megabits divided by duration in seconds, minus audio. Constant Quality (RF) is usually better, but it cannot promise a size. Use two-pass average bitrate if you need to hit a limit.
Why is my HandBrake output bigger than the original?
The original may already be efficiently encoded, or your RF is too low for the footage. Raise RF, lower the resolution, or switch to H.265. If the source is already H.265 at a modest bitrate, re-encoding may not help.
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