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<title>MSE: Don't get stuck buffering for too long when we have frames to show</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="mediasource.js"></script>
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<pre id="test"><script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
// This test loads partial video, plays and waits until playback stalls.
// It then loads only 3 frames of avideo at higher resolution.
runWithMSE(async (ms, v) => {
await once(ms, "sourceopen");
ok(true, "Receive a sourceopen event");
ms.addEventListener("sourceopen", () => ok(false, "No more sourceopen"));
const sb = ms.addSourceBuffer("video/mp4");
ok(sb, "Create a SourceBuffer");
logEvents(v);
sb.addEventListener("error", e => {
ok(false, `should not fire ${e.type} event`);
SimpleTest.finish();
});
await fetchAndLoad(sb, "bipbop/bipbop", ["init"], ".mp4");
const p = once(v, "loadeddata");
await fetchAndLoad(sb, "bipbop/bipbop", range(1, 3), ".m4s");
await p;
is(sb.buffered.length, 1, "continuous range");
v.play();
// We have nothing to play, waiting will be fired.
await waitUntilTime(v, 1.5);
await fetchAndLoad(sb, "bipbop/bipbop_480_624kbps-video", ["init"], ".mp4");
sb.timestampOffset = 1.601666; // End of the videotrack buffered - time of first video sample (0.095).
sb.appendWindowEnd = 1.830001; // Only allow room for 4 extra video frames (we need 4 as this video has b-frames).
await fetchAndLoad(sb, "bipbop/bipbop_480_624kbps-video", ["1"], ".m4s");
ms.endOfStream();
await Promise.all([once(ms, "sourceended"), once(v, "playing"), once(v, "ended")]);
is(v.videoWidth, 640, "has proper width");
is(v.videoHeight, 480, "has proper height");
SimpleTest.finish();
});
</script>
</pre>
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Messung V0.5 in Prozent
¤ Dauer der Verarbeitung: 0.22 Sekunden
(vorverarbeitet am 2026-08-25)
¤
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