Re: TTML2/TTML1 Backwards compatibility analysis

Hi all,

Just a quick message to let you know that I went through all TTML1 open
issues [2] to check if they had any impact on the compatibility between
TTML1 and TTML2. I have added comments to the issues for which I couldn't
tell if it had an impact or not. Otherwise, I have updated the Google doc
[1], mostly adding links. I did not find new incompatibilities (pending
responses in open issues).

I did not add to the Wiki because it's hard to convert it to a wiki format.
Anyone knows a converter from Gdoc to Wiki?

Cyril

[1]
https://docs.google.com/document/d/1Ri7RBBsbIK9SRxA1KsHRejXbYBuL4CRRrbmEZRbwZpg/edit#
[2] https://github.com/w3c/ttml1/issues

On Fri, Oct 13, 2017 at 4:09 PM, Cyril Concolato <cconcolato@netflix.com>
wrote:

> Hi all,
>
> Following yesterday's call, I started an analysis of the possible
> backwards compatibility issues of TTML2 vs TTML1. The results are here:
> https://docs.google.com/document/d/1Ri7RBBsbIK9SRxA1KsHRejXbYBuL4
> CRRrbmEZRbwZpg/edit?usp=sharing
>
> This is my analysis, and it might contain errors, oversights. If it is the
> case, feel free to comment on it.
>
> With the current status, it looks to me that there is no real backwards
> compatibility issue, in the sense that a TTML2 processor would produce a
> result, when processing a TTML1 document, that would be acceptable with
> what the TTML1 spec indicates.
>
> HTH,
> Cyril
>
>
>