The presenter's lips move and the voice arrives a fraction of a second later, or the ball is kicked before you hear it. IPTV audio out of sync is tiring to watch, and the first instinct is to blame the app. In practice, the delay almost always comes from one of two places: the stream itself, when the provider encoded it badly, or the equipment after the player — a soundbar, an amplifier, a TV that processes the picture, Bluetooth headphones. Finding which one is quick, and each has its own fix. This guide walks you through the checks, the settings worth knowing on Apple TV, Fire TV and your TV, and what Klyvo Play does and does not do about lip sync.
Klyvo Play is a player. It does not provide any channel, film or series: you connect the Xtream-compatible service or M3U link you already have and are authorized to use. Klyvo Play has no audio delay setting of its own: the adjustments below are made in your device, TV or soundbar settings.
First, find where the delay comes from
Four questions narrow it down in a minute:
- One channel, or all of them? A single channel out of sync points to that stream. Every channel and every film out of sync points to your equipment.
- One device, or all of them? Play the same channel on your phone. If it is in sync there, the issue is in the TV set-up, not in the stream.
- Through the TV speakers, or through a soundbar or headphones? Switch the sound back to the TV speakers for a moment. If the delay disappears, the audio equipment adds it.
- A constant delay, or one that grows? A fixed offset usually comes from hardware processing; a gap that gets worse over the evening comes from the stream.
When only one channel or one film is out of sync
Each stream carries its own timing information, written by whoever encoded it. If the provider's encoder got it wrong, the sound is shifted for everyone who watches that channel, on every app and every device. A player plays the picture and the sound at the times the stream gives them; it cannot know that the stream is wrong.
- Try another version of the channel. Many playlists carry the same channel in several qualities; the HD or SD version often comes from a different encoder and plays in sync.
- Reopen the channel. Leave it and come back: the player starts from a fresh point of the stream, which clears a gap that built up over time.
- Report it to your provider with the channel name and the time. They are the only ones who can fix the encoding.
IPTV audio out of sync on every channel: the TV and sound chain
When everything is out of sync, look at what the picture and the sound go through after leaving the player. Each piece of equipment takes some time to process its part, and when the picture takes longer than the sound — or the reverse — they drift apart:
- The TV's picture processing. Motion smoothing, noise reduction and other “enhancements” delay the picture. A Game or low-latency picture mode removes most of that delay.
- A soundbar or an AV receiver. Decoding surround sound, virtual surround and room correction all take time. Most models have an AV sync or lip sync setting to delay the sound and match the picture.
- The TV's own sound settings. Many TVs offer a lip-sync or audio-delay adjustment for the HDMI or optical output.
- A projector. With a projector, the sound often goes to separate speakers while the projector processes the picture, a classic source of delay — see IPTV on a projector.
Bluetooth headphones and speakers
Bluetooth audio always adds a delay, larger with some models and codecs than others. On a phone or tablet, the system usually compensates for video apps; on a TV box or a PC, the gap can remain visible. If the delay only happens with headphones, try wired ones or the device's own speakers to confirm. Some devices offer a calibration for wireless audio, described below.
Device settings that help (outside the app)
These settings live in the system of your device, not in Klyvo Play. Names can vary with the model and the software version:
- Apple TV: under Settings → Video and Audio, the calibration section offers Wireless Audio Sync, which uses your iPhone to measure and correct the delay of wireless speakers. The same menu lets you change the audio format the Apple TV sends. More tips in the best Apple TV 4K settings for IPTV.
- Fire TV: under Settings → Display & Sounds → Audio, recent models offer an AV sync tuning option, and a Dolby Digital output choice that includes stereo. See IPTV on Fire TV Stick 4K Max.
- Android TV boxes and phones: look in the sound settings for the surround or audio output format, and in the Bluetooth settings of the headphones.
- Windows: in the sound settings, choose the output device; with Bluetooth headphones, a wired output is the quickest test.
Surround sound sent as is: a frequent cause
Klyvo Play's VLC-based engine plays Dolby and DTS audio. Depending on the device's settings, that surround sound is either converted by the device or sent as is over HDMI for the soundbar or the receiver to decode. Decoding in the soundbar adds processing time, and some equipment does not compensate well. As a test, set the device's audio output to stereo: if the sound comes back in sync, keep stereo or adjust the soundbar's AV sync. Details about surround formats in Dolby and DTS audio on IPTV.
What Klyvo Play does — and does not do
The player plays the picture and the sound together, at the times written in the stream; it does not re-encode or retime either of them. The live buffer, which keeps a few seconds of the channel ahead to absorb network dips, delays the picture and the sound by the same amount, so it does not create a lip-sync gap. If a live channel stops sending data, the player reconnects to it on its own, which also starts it from a fresh point. For films and series, stopping and choosing Resume reopens the file at the same moment.
What the app does not have is an audio delay slider. We prefer to say it plainly: if your equipment adds a delay, the fix is the equipment's own sync setting, which corrects every app at once.
FAQ
Why is the sound out of sync on my TV and not on my phone? The phone plays picture and sound on the same device. On the TV, the picture and the sound go through separate processing — TV, soundbar, receiver — which can drift apart. Use the TV's game mode and the soundbar's AV sync.
The delay grows during a long evening. What can I do? Leave the channel and come back to it, which restarts it from a fresh point. If it keeps happening on the same channel, tell your provider: the stream's timing is at fault.
Is there a lip-sync setting in Klyvo Play? No. The adjustment is made on the device, the TV or the soundbar, as described above.
Does Multi-Live affect the sound sync? No. With two channels side by side, you hear the one you choose; each pane plays its own channel. More in no sound or no picture for other audio problems.
Fix IPTV audio out of sync for good
IPTV audio out of sync comes either from one badly encoded stream or from the equipment after the player. Test another channel, another device and the TV speakers, then use the game mode and the sync settings of your TV, soundbar or box. Want a player that handles Dolby and DTS without extra software? Download Klyvo Play and try it free for 10 days with your own service.