title: HLS "bufferStalledError" / "bufferNudgeOnStall"
body: <p>I'm trying to stream videos with HLS.js, and it works perfectly fine, but when I separate the audio from the video to support multiple audio tracks, it returns these two errors at random times in the video (&quot;bufferStalledError&quot; and &quot;bufferNudgeOnStall&quot;).</p>
  <p>I've tried using pure ffmpeg, I've tried using shaka packager, and I'm currently using bento4, but this error always occurs</p>
  <p>(my bento4 code)</p>
  <pre class="lang-sh prettyprint-override"><code>mp4hls --hls-version 4 -o &quot;${outputFolder}&quot; -f
  [type=audio,+language=Japanese]&quot;${inputFolder}${epFolder}/1080p.mp4&quot;
  [type=video]&quot;${inputFolder}${epFolder}/1080p.mp4&quot;
  [type=video]&quot;${inputFolder}${epFolder}/720p.mp4&quot;
  [type=video]&quot;${inputFolder}${epFolder}/480p.mp4&quot;
  [type=video]&quot;${inputFolder}${epFolder}/360p.mp4&quot;
  [type=video]&quot;${inputFolder}${epFolder}/240p.mp4&quot;
  </code></pre>