Audio plays but the picture is black: narrow the failure

Separate the app interface from programme video

Can you see the player’s menus, timeline or another item? If menus appear while only one programme’s video is black, record that difference. If the entire display loses its signal, the output connection deserves a separate investigation.

Do not describe those two states as the same fault. A television reporting no signal is different from an app showing a black video area with working controls.

Compare an authorised alternative

Try another item or supported rendition while keeping the connection fixed. Where media information is available, compare the video codec, resolution and frame rate. Audio and video tracks can have different compatibility requirements.

If one format works and another does not, report both combinations. Renaming a file or repeatedly importing a playlist does not convert an unsupported video track.

Check a format transition

If the whole display blanks when playback starts, note whether the equipment is changing refresh rate or dynamic range. Apple documents brief blanking during supported format changes on its hardware. Persistent black video is a different result and should be recorded as such.

Follow the exact display and player guidance. Do not bypass copy protection, disable security controls or install an unknown modified player to force a picture.

Preserve the working state

Keep the original output settings and player version in your report. If a documented simpler output comparison restores the picture, record that result before making other changes.

Include the item, selected rendition, whether menus remain visible and whether the TV reports signal loss. Those observations direct support towards the relevant stage without exposing credentials or making an unsupported claim that all streams are broken.

Questions about this guide

Sources and further reading

• MDN: Media container formats
• MDN: Web video codec guide
• Apple: Match Dynamic Range or Match Frame Rate