The batch conversion queue feels like the quiet MVP here. Drop in a folder of clips, set one output format, and Permute 4 works through the list without asking twice. It uses FFmpeg libraries under the hood, so the format coverage runs wide: video, audio, images, and a few file types you wouldn't expect from a tool this plain-looking.
Video, Audio, Image Conversion Plus Subtitle Merging
- Video files to other video formats
- Audio files to other audio formats
- Image files to other image formats
- Adding a subtitle track to a video
The subtitle option is the kind of thing that saves a separate step in another app. Select the video, pick the subtitle file, and the output arrives with the track embedded.
Apple Silicon Macs for No-Fuss Media Format Shuffling
Small teams who deal with mismatched media files on a Mac. No preset sprawl, no timeline view. Just convert and move on. Built for Apple Silicon and the current macOS release.
Drag a Folder of iPhone Clips Straight Into the Queue
You open Permute to a single window with a blank canvas. Drag a folder of iPhone footage onto it — the queue populates instantly. Each clip shows a thumbnail, duration, and the output format you last used.
- Set the target. Click the format dropdown on the first clip and choose HEVC (High Quality). Hold Option and click a second clip — the same format applies to the whole queue.
- Adjust one setting. The gear icon reveals a slider for quality, a resolution picker, and a toggle for preserving HDR metadata. You set 80% on the slider and lock the resolution to 1080p.
- Hit Convert. A progress ring fills beside each file. The app processes four clips in parallel, one per performance core. You drag in a subtitle file while it runs — the queue adds it as a new item without pausing the batch.
- Collect the results. A Finder button opens the output folder. Original files sit untouched; Permute writes copies with a suffix in the filename.
The whole session takes under a minute of your attention. The rest is watching a progress bar or switching to another task.
Rebuilt Engine Sheds Transcode Warm-Up Time
Version 4.0 moved Permute onto a new foundation: Apple Silicon only, macOS 26 minimum. The developer rebuilt the conversion engine to use the MediaExtension framework where possible, which shows in shorter warm-up time before a transcode starts.
The interface flattened. Fewer nested preferences, no toolbar customization panels that scroll. The format picker now groups outputs by category — Video, Audio, Image, Other — instead of one long list. For everyday use, that means less hunting for WebM or Opus when you need them twice a month.
Subtitles got a quiet upgrade too. Earlier versions burned subtitles into the video stream by default. The current release embeds them as a selectable track unless you explicitly check the burn-in option. That single change removes a common re-convert situation.
Subtitling a presentation recording, end to end
A client sends you a 45-minute MOV recorded at their office, plus an SRT file transcribed from the audio. You need a compact MP4 with the subtitles embedded, ready for their internal portal.
- Drop the MOV into Permute. The queue shows one item. Format defaults to whatever you used last — switch it to MP4 (H.265).
- Attach the subtitle track. Click the subtitle icon below the thumbnail, select the SRT. The preview area confirms the track is listed, not burned in.
- Set dimensions. The source is 4K; the portal caps at 1080p. Open the gear, set resolution to 1920×1080, quality to 75%.
- Start the conversion. For a file this size, the progress ring moves in steady increments. The app uses hardware acceleration on the M-series chip, so the fan stays quiet.
- Verify one detail. Open the result in QuickTime Player. Tap the subtitle button — the track is there, timing intact. File size dropped from 12 GB to roughly 900 MB.
The workflow replaces a three-app chain: one tool to transcode the video, another to mux the subtitles, and a third to resize. Here it's one queue, one pass.
- macOS 26 or later
- Apple Silicon
Questions I get before install
Does Permute 4 run on Intel Macs?
The current release targets Apple Silicon Macs running macOS 26 or later.
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