<div dir="ltr"><div class="gmail_extra"><br><div class="gmail_quote">On 23 August 2015 at 09:06, 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:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span class="">On 23.08.2015, Ahmad Samir wrote:<br>
<br>
> I am not sure what exactly is happening on your system, but I'd try<br>
> enabling MSE with h264, make sure these are set to true:<br>
> media.fragmented-mp4.enabled<br>
> media.fragmented-mp4.exposed<br>
> media.fragmented-mp4.ffmpeg.enabled<br>
> media.mediasource.mp4.enabled<br>
<br>
</span>Thanks a lot for highly valuable information, you made my day!<br>
With these options enabled and webm disabled, I'm able to play both<br>
highres videos and all the other non-highres ones that didn't work.<br>
<br>
The blocker for those other videos was MSE & WebM VP9 being<br>
enabled. Now, Firefox uses MSE & H.264 and does exactly what I want it<br>
to do.<br>
<br></blockquote><div><br></div><div>youtube seems to prefer mp4/h264 over webm/vp{8,9}, so if your system supports both, youtube will default to playing mp4/h264.<br><br></div><div>And it seems that MSE support is much better with FF40; I remember testing it with older versions a couple of months ago and it was awful.<br><br>--<br></div></div><div class="gmail_signature">Ahmad Samir</div>
</div></div>