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Losing audio while the picture keeps playing normally almost never means the stream itself is broken. It typically means your TV, soundbar, or AV receiver doesn't support the specific audio format the provider's server is sending, and the passthrough handshake between the app and your audio equipment is failing silently.
Audio Issue Troubleshooting Matrix
| Symptom | Likely Cause | Direct Solution |
|---|---|---|
| No sound on any channel, picture fine | Dolby/DTS passthrough unsupported by your soundbar/TV | Disable audio passthrough in Player Settings |
| No sound only on some channels | That channel streams an audio track your device can't decode | Manually cycle audio tracks during playback |
| Sound works on the app but not through soundbar/AVR | HDMI-ARC/eARC handshake issue | Reseat the HDMI-ARC cable and re-pair the audio device |
| Sound is delayed or out of sync | Buffer mismatch between audio and video decoders | Restart the stream; if persistent, switch decoder mode |
Step 1: Disable Audio Passthrough
"Passthrough" sends the original Dolby Digital or DTS audio stream straight to your sound system without converting it. It sounds better on equipment that supports it, but if your soundbar or TV doesn't fully support the specific format being sent, the result is often total silence rather than a warning message.
- Open Settings → Player Settings inside IPTV Smarters Pro.
- Locate Audio Passthrough (sometimes listed as HDMI Passthrough or Digital Audio).
- Turn it off so the app converts audio to standard PCM/AAC before sending it out.
- Replay the channel that had no sound.
How to tell if this is your issue: If disabling passthrough restores sound immediately, your TV or soundbar simply doesn't support the exact codec your provider streams in. Leave passthrough off permanently for reliable audio, even though it's technically a lower-fidelity path.
Step 2: Manually Select the Audio Track
Some channels broadcast multiple audio tracks (for example, a primary language and a commentary or secondary-language track), and the app can occasionally default to a silent or unsupported track.
- While the channel is playing, tap or click on the screen to reveal the playback controls.
- Look for an Audio Track or speaker-shaped icon in the control bar.
- Cycle through the available tracks listed until sound returns.
Frequently Asked Questions
Why does sound work on my phone but not when casting to my TV?
This points to an HDMI-ARC or Bluetooth handshake issue on the casting path itself, not the app. Try a direct HDMI cable connection instead of wireless casting to confirm whether the cast connection is the cause.
Will turning off passthrough make the audio quality worse?
The difference is generally not noticeable for typical TV viewing. PCM/AAC conversion keeps audio perfectly clear — you only lose the theoretical benefit of raw, uncompressed surround formats.
Does no sound mean my subscription has an issue?
No. Audio problems are a local playback/device configuration issue. A subscription or server-side problem produces an authorization error or a stream that fails to load entirely, not silent video.
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