[Libav-user] New api and deprecation warning

[Michael IV]

Exactly:


*For muxing/encoding:avcodec_parameters_from_context(stream->codecpar,
codec_ctx); *

That's what I am talking about.In my case ,codec_ctx is context I access
from the input stream.
I don't create it. So the deprecation warning is appears in this case. I
don't see why I have to
create codec context just to get rid of those warnings.



On Wed, Mar 14, 2018 at 9:44 PM Philippe Gorley <
philippe.gorley at savoirfairelinux.com> wrote:

> On 2018-03-14 03:26 PM, Michael IV wrote:
> > Hi. I am trying to get rid of deprecation warning in the API. I am
> > running with
> > ffmpeg -20170711 version. I have a code where I don't explicitly create
> > AVCodecContext
> > because I multiplex already existing h264 NALS. But I still have to
> > setup AVStream which has AVCodecContext which it creates internally
> > based on the codec I pass into
> >
> > avformat_new_stream
> >
> > .So I have something like this then:
> >
> > mVideoOutStream->codec->gop_size = muxerParams.gopSize;
> > mVideoOutStream->codec->time_base.den = mVideoOutStream->time_base.den;
> > mVideoOutStream->codec->time_base.num = mVideoOutStream->time_base.num;
> >
> > EYE_ASSERT(mVideoOutStream);
> >
> > if (mOutputFormatContext->oformat->flags & AVFMT_GLOBALHEADER)
> > {
> > mVideoOutStream->codec->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
> > }
> >
> > Every place I access '->codec->' the compiler says it's deprecated,and
> > the FFMPEG says
> > I have to use codecpar instead.But codecpar doesn't have those params.
>
> For demuxing/decoding:
> avcodec_parameters_to_context(codec_ctx, stream->codecpar);
>
> For muxing/encoding:
> avcodec_parameters_from_context(stream->codecpar, codec_ctx);
>
> Documentation for these functions can be found here:
> https://www.ffmpeg.org/doxygen/trunk/group__lavc__core.html
>
> doc/examples/transcoding.c shows how to use both.
>
> > What do I do in this case? Create explicitly codec context and assign it
> > to the stream? Looks like newer API has some design gaps > Thanks.
> >
> >
> >
> >
> >
> > _______________________________________________
> > Libav-user mailing list
> > Libav-user at ffmpeg.org
> > http://ffmpeg.org/mailman/listinfo/libav-user
> >
>
> --
> Philippe Gorley
> Free Software Consultant | Montréal, Qc
> Savoir-faire Linux
>
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