Yes. Decoders often need a suitable independent picture and associated stream information before they can show video correctly. Keyframe spacing, buffering, access checks and network delivery can all influence startup, so a short delay is not automatically evidence of insufficient internet speed.
Understand prediction between frames
Many video formats describe changes relative to other pictures to save data. A decoder joining a live stream cannot always begin with any arbitrary packet and reconstruct a clean picture immediately. It may need a suitable entry point, which is one reason audio and video can appear at slightly different moments.
Compare startup with steady playback
A channel that takes several seconds to open but then plays smoothly presents a different problem from one that stalls throughout a programme. Time a few channel changes and note whether the delay is consistent. Repeatedly reopening the stream can restart buffering and make the wait feel worse.
Describe the symptom usefully
Tell support whether the app shows a spinner, a black picture, an error or sound alone. Include approximate startup time and whether the same channel behaves similarly on another supported player. Do not alter advanced encoder or buffer settings based on a guessed keyframe interval that the app does not actually display.
