Put this clip over the low-quality moment itself, not in the intro or outro, after the original footage has played clean for comparison. Follow it with a pop effect to snap back to the clean version, letting the contrast carry the joke without extra captions underneath.
關於此聲音
A very short, effect-treated voice clip of someone asking in Russian why the quality is bad, lasting just over half a second. The line lands as frustrated and funny, like a complaint blurted out the instant a video or stream falls apart, which makes the exasperation feel instant rather than explained.