mp4 resolution

[Martin Thomas Schrott]

Hi there,


we increased our high and hd profile to reflect hd ready and full hd
resolutions.

This works for live and the webm recording but as we enabled mp4 file
format there the resolution and quality is dropped.


so we tried to change the quality in:

/usr/local/bigbluebutton/core/lib/recordandplayback/generators/video.rb


but this did not seem to work.

The transcoding has some flags that include 640x480 resolution and as it
looks like, this is in a java file.


Any chance to tweak the transcoding settings to a better quality without
switching to development?


thanks!

Martin

[sd...@distancelearning.cloud]

Hi Martin, do you know what java file exactly?

Regards,
Stephen

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[Martin Thomas Schrott]

Hi Stephen,


I would have guessed there:

https://github.com/bigbluebutton/bigbluebutton/issues/5736


cheers

Martin

[Paulo Lanzarin]

Martin,

The java component you're referring to (akka-transcode) doesn't handle recording processing. It was used in the flash client to convert

live streams (ie WebRTC <-> RTMP) or rotate them.

You can tune resolution in presentation.yml (I think):
https://github.com/bigbluebutton/bigbluebutton/blob/develop/record-and-playback/presentation/scripts/presentation.yml#L1-L2

The generator you linked (video.rb) is good for tuning other encoding parameters if you find the need to do so. Check the encoding

params in that file for the format you're using.

s,

prlanzarin

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[Martin Thomas Schrott]

Paulo, Stephen,

thanks a lot, we will have a look at the presentation config file :-)

cheers

Martin

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