Extracting the players codec at a particular instance in time

Have you read the Tutorials? Yes

Have you read the FAQ and checked for duplicate open issues? Yes

What version of Shaka Player are you using? v3.0.2

Please ask your question Looking to extract the codec the player is using at a given instance in time for telemetry event purposes. Is there a function or event that can help achieve this?

• getStats() seemed to be useful at first glance but unfortunately contains no info about the current codec.
• There’s the shaka.Player.StreamingEvent, although for our purposes it would be counter intuitive to parse an event in order to fire off an other event.
• There’s the Stream object, however this contains a list of codecs not the current one being used.

Any help would be greatly appreciated - please let me know if I’m overlooking anything.

[TheModMaker]

Actually looking over our definitions, I don’t know why the codecs field would be an array, it should be a string. In the Track definition, it will have two codecs (e.g. vp09,opus), for audio+video; but there is also the audioCodec/videoCodec fields.

[TheModMaker]

We don’t support codec switching, so the array will only contain one kind of codec. They may have different profiles, but they should have the same base codec. You should use player.getVariantTracks() to get the tracks, the codecs field will have the array of codecs. Unfortunately due to Period flattening, there is no way to determine which is being used.