[ogg-dev] How to concatenate Ogg in the browser JS?

Vitaly Zdanevich zdanevich.vitaly at ya.ru
Fri Nov 16 17:25:07 UTC 2018

I wrote him about zeroes in serial, and about Opus too (a year ago). But maybe they have rationality behind identical headers for speech - because with random serials every speech file for the same text will have different hash.

16.11.2018, 20:02, "Ralph Giles" <giles at thaumas.net>:
> On 2018-11-16 7:02 a.m., Vitaly Zdanevich wrote:
>>  AWS Polly produces Oggs with hardcoded serial numbers as zeros.
> Your earlier ogginfo post said the file was created by ffmpeg. There was
> a bug like this in ffmpeg, fixed in 2010. I hope they're not using an
> ffmpeg build that old! Or the low-quality 'vorbis' encoder included with
> the ffmpeg source instead of 'libvorbis'.
> It's also possible something about their runtime environment is
> providing bad random number seeds. Either way, it's an issue which
> should be reported.
> Pity they don't support Opus. It's quite a bit more efficient with speech.
>   -r

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