Youtube videos on Pale Moon 26?

[WinFX]

For a year YouTube HTML5 does not work in old browsers.
Pale Moon 26 comes to work in Windows 2000 vanilla and in XP RTM / SP1. Try copying some dlls for NM27 but it doesn't work in PM26. Anyone know how to make Pale Moon 26 play videos in these days?

[Mathwiz]

Not sure if this will work, but your best hope is probably @roytam1's NM 26.5 build, here:

... plus one of his LAV codec packs:

Download following packages for your browser edition(32bit/64bit) and extract DLLs to same place as palemoon.exe lives.
  32bit LAV dlls are in separated package (extracted from K-Lite codec pack 13.5.5)
  https://o.rths.ml/palemoon/lav.7z

  Just in case if you have an older processor which has no SSE instruction set support:
    32bit NoSSE (ffmpeg 3.1.1 lite build)
    https://o.rths.ml/palemoon/lav-dll-lite-mmx.7z
    32bit No ASM (ffmpeg 3.1.1 lite build, if build above doesn't work on your processor)
    https://o.rths.ml/palemoon/lav-dll-lite-noasm.7z

  64bit LAV dlls are in separated package (LAV Filters 64bit 0.70.2)
  https://o.rths.ml/palemoon/lav64.7z

[roytam1]

5 minutes ago, Mathwiz said:

your best hope is probably @roytam1's NM 26.5 build

nope, NM26 doesn't come with MediaSource so LAV dlls won't work with NM26

[Mathwiz]

Well, there goes that idea. I guess your only hope is a plug-in, but Flash is obviously out (YouTube dropping Flash is what caused the problem to start with).

Is your processor SSE2? If so Microsoft's Windows Media Player plug-in for Firefox might work. (It seems to just lock up on SSE processors.) You can get it from FileHippo: https://filehippo.com/download_windows_media_player_ffplugin, or similar freeware sites.