Mobile Live Streaming

Why is My Audio Playing without Video on iOS Devices?

By Ruth Young

4 Min Read

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Ruth Young

Ruth is a Customer Success Specialist with experience in digital video platforms as well as technology companies in Silicon Valley and beyond.

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      If the video on your live stream is not showing up on iPhones and iPads but you can hear the audio, this likely means there is an issue with your video codec. H.264 is the suggested video codec.

      Most often this problem is the result of using VP6 set up as the video codec, as shown below:

      audio only

      What is an Encoder?

      Both audio and video codecs have to do with your live stream encoder.

      Encoding is a process used to convert the RAW video files captured by a camera into digital files suitable for live streaming over the internet. This process uses either a hardware or software encoder.

      Required Live Encoder Settings

      The following live encoder settings are required for live streaming with Dacast, regardless of your selected resolution and bitrate:

      VIDEO CODEC H.264 (x264 may work)
      FRAME RATE 25 or 30
      KEYFRAME INTERVAL 2 secs (or 2x frame rate)
      SCANNING Progressive
      ENCODING BITRATE Constant (CBR)
      AUDIO CODEC AAC
      AUDIO BITRATE 128 kbps
      AUDIO CHANNELS 2 (Stereo)
      AUDIO SAMPLE RATE 48 kHz (48,000 Hz)

       

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      author avatar

      Ruth Young

      Ruth is a Customer Success Specialist with experience in digital video platforms as well as technology companies in Silicon Valley and beyond.

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