No sound in SS IPTV Player: checks to try

Audio comes from the stream itself, so what you hear depends on two things: the audio format that stream carries, and the volume settings on your device. The app plays the audio the stream provides. It cannot add sound to a stream that carries none, and it cannot decode a format your phone does not support.

That leaves a short list: the device volume, silent mode, the player's own volume, and the stream's audio format. Work down the page in that order, because the first three take seconds to check.

Android keeps several volume levels separate. The one you change with the volume keys depends on what the phone thinks is in front of you, so a phone that is loud for calls can still be silent for media.

• Press a volume key while the stream is playing. The slider that appears should say Media or Multimedia. If it says Ring or Notification, tap the slider's settings icon and raise the media level directly.
• Look for the mute state. If the media slider shows a crossed-out speaker, tap it once to unmute before raising the level.
• Check silent and vibrate mode. Silent mode is meant for ringtones and notifications, but some manufacturers also mute media in it. Switch to sound mode and play the stream again.
• Check where the audio is going. Connected Bluetooth headphones, a speaker or a car kit take the sound with them even when you cannot see them. Disconnect them, or check the headphones themselves.
• If you are casting, check the display's volume. A Chromecast or TV has its own volume, separate from the phone's. Raise it on the TV remote or in the cast controls.

Once the phone's media volume is up, look inside the app while a stream is playing.

• Open the on-screen controls by tapping the picture. If the player shows its own volume slider or a speaker button, check that it is not at zero and not muted.
• Raise the in-app level to full, then lower the phone volume if it is too loud. A player volume left low is easy to miss, because the phone's slider looks correct.
• Give the stream a few seconds. Some items open with a moment of silence while the buffer fills. Seek forward slightly and listen again.
• Switch to a different item in the same playlist. If the second item has sound, the app and the device are working and the first stream is the problem.

Streams carry audio inside them, and the codec used varies. Android devices handle the common ones, such as AAC and MP3, on essentially every phone. Others are less certain:

• Surround formats. Audio carried as AC-3 or E-AC-3 (Dolby Digital) needs a device that can decode it. On a phone that cannot, video can play with no sound at all.
• Multiple audio tracks. A stream can offer several tracks, for example two languages plus a commentary. Where the stream offers a choice, the one selected may not be the one you expect, and a track can carry silence.
• Odd or uncommon codecs. Streams built for a set-top box sometimes use audio a phone does not support, even when the video plays fine.

None of this is a setting you can switch off. The app plays the audio track the stream provides, and it does not convert one format into another, so an unsupported format stays silent on that device.

The app has no channels of its own: every item comes from the playlist you added. If the checks above all pass, the stream is where the sound is missing.

• The stream may have been published without an audio track, or with one that failed when it was packaged.
• A source may serve the video fine and the audio badly under load, so sound drops out on busy hours and returns later.
• A provider can change a stream's format between sessions, which is why an item that had sound last week can be silent today.
• Where an item works in one app and not another on the same device, the difference is how each app handles that format.

If one item is silent and others are not, note the item and the time it happened. That is the detail whoever supplies the playlist needs, and no setting in the app can restore audio the stream does not carry. For playback that stops rather than goes quiet, see how to fix buffering.

The format notes here follow the HTTP Live Streaming specification, which defines how audio and video tracks are carried in a stream, and Google's published list of media formats Android supports.

• RFC 8216 — HTTP Live Streaming (IETF)
• Android Developers — Supported media formats

For a playlist that will not open at all, read the playlist troubleshooting guide. If sound is missing only when you send the picture to a television, check the Chromecast guide.