[opus] mjr to opus audio conversion - corrupted results

Mateusz Koslacz mateusz.koslacz at 4vod.tv
Wed Jul 8 12:29:38 PDT 2015

Hi Mark,

Well, so do you think that any of this libraries probably won't provide
correct audio conversion? Do you know any other possible solutions for
described problems, ommiting trying to fix on my own any of this libraries
or waiting for fix? Will you mind if I quote you in disscussion I
mentioned? Sorry for asking you so many questions at once.



2015-07-08 17:42 GMT+02:00 Mark Harris <mark.hsj at gmail.com>:

> Hi Mateusz,
> The Ogg Opus container does not have explicit per-packet timestamps,
> and so doesn't allow gaps in the audio.  PLC packets may be generated
> to replace any packets that were lost or corrupted, as described in
> section 4.1 of the specification:
> https://tools.ietf.org/html/draft-ietf-codec-oggopus-08#section-4.1
> These packets usually consist of just a single TOC byte.  It looks
> like the tool you are using does not do this, and does not replace
> gaps with anything.  Unfortunately FFmpeg has a similar issue:
> https://trac.ffmpeg.org/ticket/3391
>  - Mark
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