libera #seamonkey

5 Sep 2025

Surfing the net has never been so suite || Release: 2.53.22 | Beta: 2.53.22b1 seamonkey-project.org/releases || This channel is logged at logbot.thereisonlyxul.org/seamonkey || SeaMonkey Nightly 2.53 b1pre archive archive.seamonkey-project.org/nightly || c-c (OPEN ) , c-253 (APPROVAL ONLY) || R.I.P. WG9s

• 01:11
  tomman
  places with mp4 videos just show the "can't find compatible video format or MIME type"
• 01:12
  tomman
  BUT!
• 01:12
  tomman
  webm videos play fine!
• 01:12
  tomman
  ...what gives
• 01:12
  tomman
  ?
• 01:13
  tomman
  yeah, the error console says "video/mp4" is not supported, but why?
• 01:13
  tomman
  Does SeaMonkey even tries to load system ffmpeg libs?
• 01:13
  tomman
  ...there is one way to check
• 01:15
  tomman
  seamonkey 2967 tomman mem REG 8,3 14938720 5511007 /usr/lib/x86_64-linux-gnu/libavcodec.so.59.37.100
• 01:15
  tomman
  seamonkey 2967 tomman mem REG 8,3 1880776 6976946 /opt/seamonkey/libmozavcodec.so
• 01:15
  tomman
  why yes, it does!
• 01:15
  tomman
  This on my Debian 12 box
• 01:16
  tomman
  ...on the Debian 13 one, there is no signs of system avcodec being used
• 01:16
  tomman
  ...because libavcodec.so there is a newer version, libavcodec.so.61.19.101
• 01:17
  tomman
  Why libmozavcodec.so even loads the system ffmpeg? Is there any list of supported versions? (yes, I know, for the ffmpeg folks the idea of a "stable ABI" is like killing puppies, ick!)
• 01:20
  tomman
  oh, there is
• 01:21
  tomman
  bugzilla.mozilla.org/1516178 gave me a powerful hint: MOZ_LOG=PlatformDecoderModule:5
• 01:21
  tomman
  ...because libmozavcodec is stripped down to just play webm and friends, but none of the MPEG-LA cartel formats
• 01:22
  tomman
  and in that case, it WANTS your system ffmpeg
• 01:22
  tomman
  And in my Debian 13 box, turns out that libavcodec.so.61 is too new... as it wants anything between .53 and .60!
• 01:23
  tomman
  so there is it, case closed
• 01:23
  tomman
  "Debian is shipping a too new version of $LIBRARY" is something you do not expect to say frequently :D
• 01:44
  tomman
  can't borrow Firefox ESR's mozavcodec libs, that won't work :/
• 01:55
  tomman
  the latest nightly also has the same limitation
• 01:56
  tomman
  "Debian is shipping a too new version of $LIBRARY" is something I'm totally getting printed on a T-shirt ASAP :D