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Re: recording proposal

From: Timothy B. Terriberry <tterriberry@mozilla.com>
Date: Tue, 16 Oct 2012 17:48:18 -0700
Message-ID: <507E0052.4080802@mozilla.com>
CC: public-media-capture@w3.org
Harald Alvestrand wrote:
> If one tries to record something with multiple tracks onto a container
> format that does not support them, failure is to be expected. But I
> think some container formats can do this just fine (witness DVDs with
> alternate camera angles). Subject matter expertise is needed here.
> (I don't know the formats well enough.... I know it's possible to write
> codecs in Javascript, but is writing a Matroska or DVI container
> producer in Javascript something we expect people to do and get right?)

Basically any container format can support an arbitrary number of 
tracks. That does not mean software which plays back those files will do 
so, however. In Firefox, for example, we always pick the first video and 
first audio track we recognize, and ignore the rest.
Received on Wednesday, 17 October 2012 00:48:46 UTC

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