Package: firefox-esr Version: 45.3.0esr-1~deb8u1 Severity: normal When playing any YouTube video, it will show buffering and play maybe a frame or two and then just sit and spin as though it needs to buffer, but it never plays.
If I set media.mediasource.enabled to false, then it works fine If I set media.mediasource.webm.enabled and media.mediasource.webm.audio.enabled to false, then it works fine Setting media.mediasource.mp4.enabled to false has no effect -- Package-specific info: -- Extensions information Name: Default theme Location: /usr/lib/firefox-esr/browser/extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}.xpi Package: firefox-esr Status: enabled Name: Disconnect Location: ${PROFILE_EXTENSIONS}/2...@disconnect.me.xpi Status: enabled Name: Firefox Hello Beta Location: ${PROFILE_EXTENSIONS}/l...@mozilla.org.xpi Status: enabled Name: HTTPS-Everywhere Location: /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/https-everywh...@eff.org Package: xul-ext-https-everywhere Status: enabled Name: Pin It button Location: ${PROFILE_EXTENSIONS}/jid1-ycmv6ngymqr...@jetpack.xpi Status: enabled Name: uBlock Origin Location: ${PROFILE_EXTENSIONS}/ublo...@raymondhill.net.xpi Status: enabled Name: Y U no validate Location: /usr/share/mozilla/extensions/{ec8030f7-c20a-464f-9b0e-13a3a9e97384}/{20d36f97-15da-47ed-9f0a-13cbe85bdc84} Package: xul-ext-y-u-no-validate Status: enabled -- Plugins information Name: Citrix Receiver for Linux Location: /opt/Citrix/ICAClient/npica.so Package: icaclient Status: enabled Name: MozPlugger 1.14.5 handles QuickTime and Windows Media Player Plugin (1.14.5) Location: /usr/lib/mozilla/plugins/mozplugger.so Package: mozplugger Status: enabled -- Addons package information ii firefox-esr 45.3.0esr-1~ amd64 Mozilla Firefox web browser - Ext ii icaclient 13.2.0.32224 amd64 Citrix Receiver for Linux ii mozplugger 1.14.5-2 amd64 Plugin allowing external viewers ii xul-ext-https- 4.0.2-3 all extension to force the use of HTT ii xul-ext-y-u-no 2013052401-2 all browser extension to make securit -- System Information: Debian Release: 8.5 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 (SMP w/4 CPU cores) Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) Versions of packages firefox-esr depends on: ii debianutils 4.4+b1 iu fontconfig 2.11.0-6.3+deb8u1 ii libasound2 1.0.28-1 ii libatk1.0-0 2.14.0-1 ii libc6 2.19-18+deb8u4 ii libcairo2 1.14.0-2.1+deb8u1 ii libdbus-1-3 1.8.20-0+deb8u1 ii libdbus-glib-1-2 0.102-1 ii libevent-2.0-5 2.0.21-stable-2 ii libffi6 3.1-2+b2 iu libfontconfig1 2.11.0-6.3+deb8u1 ii libfreetype6 2.5.2-3+deb8u1 ii libgcc1 1:4.9.2-10 ii libgdk-pixbuf2.0-0 2.31.1-2+deb8u5 ii libglib2.0-0 2.42.1-1+b1 ii libgtk2.0-0 2.24.25-3+deb8u1 ii libhunspell-1.3-0 1.3.3-3 ii libpango-1.0-0 1.36.8-3 ii libsqlite3-0 3.8.7.1-1+deb8u1 ii libstartup-notification0 0.12-4 ii libstdc++6 4.9.2-10 ii libx11-6 2:1.6.2-3 ii libxcomposite1 1:0.4.4-1 ii libxdamage1 1:1.1.4-2+b1 ii libxext6 2:1.3.3-1 ii libxfixes3 1:5.0.1-2+b2 ii libxrender1 1:0.9.8-1+b1 ii libxt6 1:1.1.4-1+b1 ii procps 2:3.3.9-9 ii zlib1g 1:1.2.8.dfsg-2+b1 Versions of packages firefox-esr recommends: ii gstreamer1.0-libav 1.4.4-2 ii gstreamer1.0-plugins-good 1.4.4-2 Versions of packages firefox-esr suggests: pn fonts-lmodern <none> pn fonts-stix | otf-stix <none> ii libcanberra0 0.30-2.1 pn libgnomeui-0 <none> ii libgssapi-krb5-2 1.12.1+dfsg-19+deb8u2 ii mozplugger 1.14.5-2 -- no debconf information