Hello Dave,

Thanks for very detailed report
Actually screen-sharing works as follows:

1) screen-sharing app sends video only
2) per user audio/video is being send to server according user settings

In case "Record" button is pressed all streams are being written into
separate files
so In case I user performs screen-sharing, and 1 was the speaker
there should be 2 *.flv files

later on (during post-processing stage) all audio streams being
converted to 1 WAV file
and this audio is added to video from screen-sharing ....

This is really strange situation: there was audio in the room
Stream from user was recorded, but without audio

I'll try to double-check this


On Thu, Mar 1, 2018 at 8:08 AM, David Jentz <jen...@gmail.com> wrote:
> Testing in openmeetings 4.0.2 on linux (centos 6.9) server
>
> Desktop sharer appears to make a mp4 just fine. Video playback is 100%
> fine. Mp4 has audio embedded (playback in VLC indicates 200 blocks
> decoded, 200 buffers played 0 buffers lost).
>
> The sound being spoken into the microphone is not being recorded,
> however. Instead the audio track appears to be completely silent.
>
> Microphone in openmeetings appears to work OK. Other users in the same
> openmeetings room can hear just fine.
>
> Circle audio indicator in the openmeetings room user list appears to
> be flashing when words spoken - even recorded in video created by
> desktop sharer. All good.
>
> Volume level bar in the users camera inset are also correctly
> indicated when words spoken into microphone. This is also recorded in
> the mp4 created by desktop sharer.
>
>
>
> Think this may have been an issue for us in 4.0.1 also.
>
> This was last known to work in 3.2.1
> Found some files in the webapps/openmeetings/stream directories with
> matching timestamps to the recordings.
>
> The flv files played back with 0 audio buffers in vlc
> The .wav file played back with 558 blocks, 558 buffers played, 0
> buffers dropped, but also completely silent.
>
>
>
> -Dave



-- 
WBR
Maxim aka solomax

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