[Ffmpeg-devel] Degraded G.726 quality with pops and clicks

[Benjamin Larsson]

Brain Lai skrev:
> Dear all:
>
> When streaming G.726 24/32Kbps with VLC, I found the quality is 
> degraded and
> unacceptable compared to AWave studio(play the saved audio bitstream).
>
> For G.726 24Kbps, the sound is filled wih pops and clicks.
> For G.726 32Kbps, a young man sounds like an old one.
>
> The audio is encoded by ITU reference implementation.
> It has no problem if the audio is decoded by ITU reference implementation
> and played by AWave studio/Adobe Audition.
>
> I know VLC decodes media with FFMpeg library, so I ask here for help. 
> Does
> it result from ffmpeg's G.726 decoder(G.711 is no problem)? What's the
> difference of G.726 decoding process between ffmpeg and the ITU reference
> implementation?
>
> Regards
> Brain Lai

Hi, I'm guessing that those modes are not supported (yet). Supply a 
sample we'll see what happens.

MvH
Benjamin Larsson