[FFmpeg-devel] [PATCH] Add bitrate and framerate option for openH264

[Steven Liu]

2016-07-14 18:22 GMT+08:00 Carl Eugen Hoyos <cehoyos at ag.or.at>:

> Steven Liu <lingjiujianke <at> gmail.com> writes:
>
> > +    { "bitrate", "Set bitrate", OFFSET(bitrate),
> > AV_OPT_TYPE_INT, { 0 }, 0, 700000, VE },
> > +    { "framerate", "Set framerate", OFFSET(framerate),
> > AV_OPT_TYPE_INT, { 0 }, 0, 30, VE },
>
> Both options already exist in FFmpeg, it may be a good idea
> to map them to openh264 (do I understand correctly that the
> current encoder doesn't allow to set a target bitrate?) but
> there should be no need to add these strings to options[].
>
> Carl Eugen
>

Hi Carl Euge,

      This patch can modified the  bitrate and frame at the encoder runtime,
      for example:

            i set the init codec param bitrate 2000k , framerate 30fps, and
push the encoded stream to rtmp server with flv mux, and then the network
is very terrible，so dynamic set the encoder, set the new bitrate and
framerate. The openh264 codec support this options.