[FFmpeg-devel] [PATCH 1/1] avcodec/libopusdec: Enable FEC/PLC

[Carl Eugen Hoyos]

Am Di., 16. Feb. 2021 um 15:02 Uhr schrieb Philip-Dylan Gleonec
<philip-dylan.gleonec at savoirfairelinux.com>:
>
> Adds FEC/PLC support to libopus. The lost packets are detected as a
> discontinuity in the audio stream. When a discontinuity is used, this
> patch tries to decode the FEC data. If FEC data is present in the
> packet, it is decoded, otherwise audio is re-created through PLC.
>
> This patch is based on Steinar H. Gunderson contribution, and corrects
> the pts computation: all pts are expressed in samples instead of time.
> This patch also adds an option "decode_fec" which enables or disables
> FEC decoding. This option is disabled by default to keep consistent
> behaviour with former versions.

Could you elaborate?
I would have expected that the normal use case is not have a
lossy input and that the new feature is always useful if data
was lost.

Or is there no way to distinguish between a stream with
unusual timestamps and a stream with packet loss?

Carl Eugen