Their requirement in the e-mail announcement say: it is necessary to use up-to-date browsers, which are HTML5 compatible if used from mobile devices, or with an appropriate Flash plugin for older versions.. Once entered on the site the "platform characteristics" specify the requirement as Adobe Flash 11 or higher.
I have PM 28.1.0 on opensuse 42 (on an HP desktop, of course). My version of adobe flash is 126.96.36.199.
I went to the site (which is protected by a personal password for each "course student"). The first time I got a notice about a blocked popup (I enabled the site and nothing happened). Once entered I read the general material and started the first course module. In general I can see the static slides and hear the audio, but some of the slides show something which looks like a ... black blackboard, which remains black while a music is playing. I expect some video should appear in it. I get NO error messages. So I interrupted the course.
I would loath using a browser other than PM.
Do you have any suggestions about debugging what is going on, checks in the preference or about:config and so on ?
Edit: I activated the Tools-> Web Developer -> Error Console and saw some warning and error messages there, but I cannot show them here because I cannot copy them or freeze the error console since it continues showing what happens in other browser windows as I move there !
When I re-enter the course module (before it starts, when asking me whether I want to resume) I get an error "downloadable font: kern: num_tables is zero, table discarded (font family: ArticulatedBold .... and so on and so forth. I guess this is harmless since I can read the screen, I suppose some replacement font is used.
Then when I go to the window with the "black blackboard" and play starts (at least there is a slide progress bar increasing in the main slide) I see a number of warnings like "HTTP Content-Type of video/mp4 is not supported. Load of media resource .... xxxx.mp4 failed" followed by "Cannot play media. No decoders for requested formats: video/mp4, video/mp4, video/mp4, video/mp4" (verbatim, 4 times) and by "Attempt to set a forbidden header was denied: Host" (twice)
video_22dcaf42-f2c2-4da9-b096-bddc5c8b14bb_24_64_540x304.mp4: ISO Media, MP4 Base Media v1 [IS0 14496-12:2003]
and if I tray to play it offline with the suse-provided utility "dragon" it says
Codec nice name: H.264 (High Profile) decoder
Did not install codec: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown:
YAST (the suse package manager) says a number of ffmpeg libavcodec are installed, but I am afraid they do not support H.264, according to this page https://en.opensuse.org/SDB:Firefox_MP4 ... eo_Support (and in fact the bundled firefox does not play it as well as palemoon)
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where you want to see an output line like
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DEV.LS h264 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_crystalhd h264_v4l2m2m ) (encoders: libx264 libx264rgb h264_omx h264_v4l2m2m h264_vaapi )
Better than using chrome (where H264 is built in)
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