Use the Encoder Test Pattern and Tone

Commission the complete path with SMPTE, ball, or snow video and optional tone.

Written By 4ALL.LIVE

Last updated About 1 month ago

Test encoding, CEA insertion, transport, and downstream decoding without depending on a camera or capture card.

Best for: Operators, installers, and support technicians.

Before you start

Included with 4All Encoder.

  • Sign in with access to the correct organization, team, and event.
  • Record event, language, workstation, app build, OS, drivers, destination, and operator.
  • Commission with a test pattern and non-public receiver before program video.
  • Create a stream and test destination.
  • Prepare a receiver/local preview.
  • Use a downstream decoder capable of selecting CEA services.

Step by step

  1. Set Input to Test.
  2. Choose SMPTE for alignment/color, Ball for motion, or Snow for stress.
  3. Enable tone only after warning the audio team and lowering monitor gain.
  4. Start with a conservative 1080p30 or 720p30 H.264 profile.
  5. Open preview with safe area and captions.
  6. Start one target, trigger captions, and select the embedded service at the receiver.
  7. Stop and disable tone before program audio.

What success looks like: Deterministic video/audio cross the complete path with captions embedded by the selected profile.

Check your setup

  • Preview and receiver show the same pattern.
  • Tone reaches expected channels.
  • Caption timing can be measured.
  • Stop returns targets/pipeline to stopped.

Troubleshooting

  • Black receiver: validate codec/container and lock.
  • No tone: verify Include tone and mapping.
  • No captions: inspect CEA plugins, service, and decoder.
  • Stutter: inspect rate control, GPU, bitrate, and uplink.

Security and operational notes

Important: Test tone can be disruptive or damaging at high levels. Announce it and reduce monitoring gain first.