# Batch apply a LUT to video

> Apply a .cube LUT to a folder of D-Log, S-Log or C-Log clips on macOS, with per-clip strength, untouched audio and hardware encoding. No timeline.

Canonical: https://batchtone.com/batch-lut-video

Video

A folder of clips, one look, per-clip strength. LOG conversion without opening a timeline or building a node graph.

## LOG footage is the common case

D-Log, S-Log, C-Log and the rest come off the card flat and grey on purpose, and every clip from that shoot needs the same conversion. That is a batch job, but the tools that do it well are editors: a timeline, a colour page, a render queue.

BatchTone treats it as what it is. Drop the folder in, pick the Rec.709 conversion, and come back to graded files with the same names.

|  | BatchTone | An editor |
|---|---|---|
| Setup per shoot | Drop a folder in | Project, timeline, render queue |
| Strength per clip | A slider on each one | A node or an effect per clip |
| Audio | Copied untouched | Re-encoded unless configured |
| Output names | Set before the run | Per-clip, by hand |

## What it does under the hood

Export goes through ffmpeg, which BatchTone ships rather than asking you to install. Strength below 100% is a real blend: the stream is split, graded on one branch and mixed back over the original, which is the same arithmetic the photo path uses, so a clip at 50% and a photo at 50% land on the same values.

Encoding uses the Mac's own hardware encoder, so a two-minute 4K clip does not take twenty minutes, and the audio track is copied rather than re-encoded.

## Common questions

### Which formats?

MP4, MOV, M4V, AVI, MKV, MTS and M2TS in; H.264 MP4 out. H.264 and HEVC are both read, including 10-bit.

### Does it re-encode the audio?

No. The audio stream is copied across untouched.

### Can I see the look before exporting?

Yes. A frame is pulled from each clip and the LUT is previewed on it, so the strength is judged on the actual footage rather than on a filename.

## Try it on your own shoot

Seven days with everything unlocked. If it does not read your files, you will know within the hour and it will have cost you nothing.

[Download on the Mac App Store](https://apps.apple.com/app/batchtone/id6821727167)