[FFmpeg-devel] [RFC]lavc/adpcm: Support baby monitor adpcm_ms

[Carl Eugen Hoyos]

Paul B Mahol <onemda <at> gmail.com> writes:

> On 5/3/16, Carl Eugen Hoyos <cehoyos <at> ag.or.at> wrote:
> > Paul B Mahol <onemda <at> gmail.com> writes:
> >
> >> > I added the following comment locally:
> >> > // Levana Ovia Baby Monitor prepends each audio 
> >> > frame with these two bytes
> >>
> >> Sorry, life sucks. This patch is unacceptable.
> >
> > So how should this be implemented?
> 
> Perhaps predictor, if too big should be just clipped.

Why do you think there is a too big predictor?
Two additional bytes are inserted at the beginning of 
every frame.
Should the demuxer be patched instead?

> Without samples, there is not much one can do.

Sample was part of this thread, is now in:
https://samples.ffmpeg.org/asf-wmv/V_000038.asf

Carl Eugen