H.265 codec in OO platform

Jakub Wasielewski

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Nov 20, 2019, 8:52:52 AM11/20/19

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Hi everyone,

We have started to introduce video materials on our platform. We are currently coding them as H.264 but we would like to post H.265 encoded materials. Unfortunately, OO does not support it.

So I have a question, is it possible to implement the HEVC codec for OpenOLAT? And if so, how can this be done?

Thank you in advance for the information.

greetings

Jakub

Florian Gnaegi

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Nov 21, 2019, 7:12:11 AM11/21/19

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Hi Jakub

We use the jCodec library to readout video metadata. This library does not support h265:

https://github.com/jcodec/jcodec/issues/360

Right now we have no plans to change anything here.

Cheers

Florian

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Jakub Wasielewski

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Nov 21, 2019, 8:26:47 AM11/21/19

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Hi Florian,

Thank You for quick response and information.

Cheers

Jakub

Stéphane Rossé

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Nov 21, 2019, 2:56:54 PM11/21/19

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Hi Jakub

You need support of h265 not only in OpenOlat but of the browsers too. For the moment, it's very limited. Safari and Edge support h265 for the moment (and it seems that Edge based on Chromium doesn't support it). Firefox, Goggle Chrome and all Android devices don't support it. They will not profit from the advantages of it and OpenOlat will need to transcode it to h264. And loose quality in the process.