slplayer: Video Player
MKV & subtitles that just work
Only for Mac
Free · In‑App Purchases
Mac
Plays the MKV files and subtitles a Mac can't open on its own — natively, no codec packs. Playing is free; Pro adds split view, PiP, A-B loop and more. 7-day free trial.
Some videos just won't open on a Mac. The MKV that QuickTime refuses. The subtitle file that comes out as gibberish. The two-language episode where you only ever hear the first track.
slplayer is built for exactly those files — and it plays them with the Mac's own media engine, so it stays light, quiet and battery-friendly.
PLAYS WHAT THE MAC CAN'T
• MKV, MP4, M4V, MOV and MPEG-TS
• H.264 and HEVC (10-bit, HDR10), AAC, AC-3, E-AC-3 and FLAC
• No codec packs, no bundled decoders — HDR, PiP and energy efficiency come straight from macOS
• Open a file from the Finder, drag it onto the window, or drop several at once to build a queue
SUBTITLES THAT JUST WORK
• SRT, VTT and SMI files — including Korean SMI in EUC-KR, detected automatically
• Two subtitle tracks on screen at once
• Sync offset in 0.1-second steps, remembered per file
• Style presets, or your own font, colour, outline and box — with a live preview
• Choose the audio track you actually want to hear
MADE FOR THE MAC
• Playback speed from 0.5× to 2.0× in 0.1 steps, with keyboard shortcuts for everything
• Playlists with folders, recent items, and resume where you left off
• Skip forward and back by the interval you choose
• 12 languages, switchable inside the app
FREE, AND PRO
Playing is free, and stays free: opening files, MKV, subtitles, sync, dual subtitles, playback speed, audio tracks, full screen, playlists and recent items.
slplayer Pro adds the conveniences:
• Split view — up to four videos side by side, with one set of controls driving all of them
• Picture in Picture and a menu bar mini player
• A-B loop with sentence snapping and repeat count
• Sleep timer
• Custom subtitle styles
• Playback defaults, and per-file memory of speed, subtitles and sync
• Audio sync offset
• Seamless transitions between files and automatic window fit
• Unlimited playlist folders and a custom skip interval
Every Pro feature is free for the first 7 days — no payment details, no subscription needed to try it.
SLPLAYER PRO SUBSCRIPTION
slplayer Pro is an auto-renewable subscription, available monthly or yearly. Payment is charged to your Apple Account when the purchase is confirmed. The subscription renews automatically unless it is cancelled at least 24 hours before the end of the current period, and it can be managed or cancelled in your Apple Account settings at any time.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://juki-j.github.io/privacy-policy/slplayer-en.html
PRIVACY
No account, no analytics, no advertising. slplayer makes no network requests of its own — nothing about you or your files leaves your Mac.
SOME FILES WON'T PLAY
This app plays only the formats your Mac supports. If a file's audio can't be played, the video still plays and a notice appears when playback starts; image-based subtitles are not shown. Files that can't be opened show an error.
Screenshots and the app preview feature the open movies Sintel, Big Buck Bunny and Tears of Steel (CC BY 3.0) and Elephants Dream (CC BY 2.5) © Blender Foundation.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Version 1.0.1
• MKV files with an audio track slplayer can't play now show the video without sound instead of failing
• Playback shortcuts now also work with non-Latin keyboard input sources such as Korean, Russian and Japanese
• Your place in a video is saved when you move on to the next one
• Opening several files at once plays the first and queues the rest
• Subtitles stay on when you change the split-view layout
• More dependable subscription price loading, and many other fixes
The developer, JUKI JUNG, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- JUKI JUNG
- Size
- 30.8 MB
- Category
- Photo & Video
- Compatibility
Requires macOS 14.0 or later.
- Mac
Requires macOS 14.0 or later.
- Mac
- Languages
English and 10 more
- English, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Turkish
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- slplayer Pro Yearly $19.99
- slplayer Pro Monthly $1.99
- Copyright
- © 2026 SETLOG
