> From: [email protected]
> To: [email protected]
> Date: Wed, 15 Jul 2015 18:19:18 -0400
> Subject: [Libav-user] how to change x264 parameters after opening the encoder
> (avcodec_open2)
>
>
> I decode and re encode I frame of a movie file.
>
> when encode I frame, each I frame need a different qp value.
> How can qp parameter change after
> avcodec_open2(CodecCtx, codec, &options) ) ?
>
> av_dict_set( &options, "qp" , x , 0 ) is used to set qp.
>
>
> If x264 parameter can't change after avcodec_open2 function,
> Can I close this encoder and open a new x264 encoder with a new parameter for
> next I frame?
>
> Thanks
>
> _______________________________________________
> Libav-user mailing list
> [email protected]
> http://ffmpeg.org/mailman/listinfo/libav-user
From the documentation of avcodec_open2Always call this function before using
decoding routines .
So you can't change the parameters after calling the avcodec_open2
For the second question, of course you can close one and reopen another one.
_______________________________________________
Libav-user mailing list
[email protected]
http://ffmpeg.org/mailman/listinfo/libav-user
