<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On 21 August 2015 at 18:04, Heinz Diehl <span dir="ltr"><<a href="mailto:htd+ml@fritha.org" target="_blank">htd+ml@fritha.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hi,<br>
<br>
F22, latest Firefox 40. With standard configuration, I can't play any<br>
highres video on Youtube (720 or 1080p). When setting<br>
<br>
media.mediasource.enabled<br>
media.mediasource.webm.enabled<br>
<br>
to "true" as recommended by the Mozilla Community, highres videos play<br>
just fine. BUT some other videos now do not play any longer. In<br>
particular, when setting<br>
<br>
media.mediasource.webm.enabled<br>
<br>
to "false", those non-working videos work again. But then, no highres<br>
is possible. Example:<br>
<br>
<a href="https://www.youtube.com/watch?v=kFzN6j6FjJc" rel="noreferrer" target="_blank">https://www.youtube.com/watch?v=kFzN6j6FjJc</a></blockquote><div>[...]<br><br></div><div>IIUC, there're two different ways of not using adobe flash to play youtube videos:<br></div><div>- The HTML5 player uses the gstreamer backend on the system<br></div><div>- The HTML5 player uses the MSE (Media Source Extensions) stuff<br><br></div><div>to check what's enabled on your setup go to <a href="http://youtube.com/html5">youtube.com/html5</a>.<br><br></div><div>- If MSE can't work on your system either with webm/VP9 format or with the mp4/h264 format then it'll fallback to the HTML5 player with the gstreamer backend<br><br></div><div>- With the gstreamer HMLT5 player not all resolutions are available, for example with the gstreamer backend I only get 360p and 720p, and nothing in between or over that range<br></div><div><br></div><div>- I am not sure but I think that not all videos are available in both webm and h264 formats<br><br></div>I am not sure what exactly is happening on your system, but I'd try enabling MSE with h264, make sure these are set to true:<br>media.fragmented-mp4.enabled<br>media.fragmented-mp4.exposed<br></div><div class="gmail_quote"><div>media.fragmented-mp4.ffmpeg.enabled<br>media.mediasource.mp4.enabled<br><br></div><div>that should make videos become available with more resolutions.<br><br></div></div>-- <br><div class="gmail_signature">Ahmad Samir</div>
</div></div>