Premium 4K. Finally smooth on Apple TV.

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4K HEVC 50fps without stutter

Apple TV 4K (3rd gen) hardware decodes HEVC 50fps natively — but only KSPlayer wires it correctly via VideoToolbox with asynchronous decompression. The same TF1 4K stream that stutters in IPTV Smarters plays clean here.

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Clean Dolby Digital audio

AudioRendererPlayer instead of AVAudioPlayerNode for the audio path — fixes the muffled center channel that plagues VLC + KSPlayer's default config on Dolby Digital sources.

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Triple engine, automatic failover

KSPlayer for 4K HEVC 50fps, MPV for exotic codecs, VLC for VOD with seek. The app picks automatically — and silently fails over if the first engine struggles.

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HDR10 + Dolby Vision passthrough

When your stream carries HDR metadata, OneTV Connect passes it through to your TV without tone mapping in software (which would crush the dynamic range).

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Built for French + UK 4K broadcasters

TF1 4K, France Télévisions 4K, Canal+ 4K, Sky Q UHD, BT Sport Ultimate, beIN 4K — all the premium European 4K feeds use HEVC 50fps. We test against them weekly.

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Bandwidth + buffer tuning

For 4K HEVC live, we tune the demuxer buffer (300 MB on Apple TV 4K to handle bursty B-frames) and disable byte-offset reconnect (which causes PTS desync on TS streams). Settings are per-engine and per-stream-type.

Why does 4K HEVC 50fps stutter in other apps?

Most iOS / tvOS IPTV apps use VLCKit or AVFoundation. VLCKit's HEVC decoder isn't tightly integrated with Apple's VideoToolbox — it can decode the frames but can't keep up with 50fps in real-time on the older A12 chip. AVPlayer in HLS mode handles HEVC 50fps but most IPTV streams aren't HLS — they're raw TS or MPEG-DASH, which AVPlayer doesn't speak. KSPlayer with FFmpeg + VideoToolbox is the only viable combo we've found.

Does it work on Apple TV HD (non-4K)?

The app installs and plays 1080p HEVC fine, but Apple TV HD's chip can't sustain 4K 50fps decoding regardless of the player. Same for older iPhones: anything pre-iPhone XS will struggle with 4K HEVC 50fps. iPad Pro M1+ is a fantastic 4K IPTV device.

Will my Dolby Atmos / DTS-HD audio survive?

Dolby Digital Plus and Atmos passthrough work over the Apple TV → eARC HDMI to your AVR. Lossless DTS-HD MA depends on your AVR; OneTV Connect doesn't transcode (we passthrough whatever the stream contains).

What about HEVC 60fps for sport in the US?

Same engine, same hardware decoding path — works the same way as 50fps. We test NBA League Pass and ESPN+ where 60fps streams are common.