listen              1935;
vhost __defaultVhost__ {
# the streaming transcode configs.
    transcode {
# whether the transcode enabled.
# if off, donot transcode.
# default: off.
        enabled     on;
# the ffmpeg 
        ffmpeg      ./objs/ffmpeg/bin/ffmpeg;
# the transcode engine for matched stream.
# all matched stream will transcoded to the following stream.
# the transcode set name(ie. hd) is optional and not used.
# we will build the parameters to fork ffmpeg:
#       ffmpeg <perfile>
#               -i <iformat> 
#               <vfilter> 
#               -vcodec <vcodec> -b:v <vbitrate> -r <vfps> -s <vwidth>x<vheight> -profile:v <vprofile> -preset <vpreset>
#               <vparams>
#               -acodec <acodec> -b:a <abitrate> -ar <asample_rate> -ac <achannels>
#               <aparams>
#               -f <oformat>
#               -y <output>
        engine example {
# whether the engine is enabled
# default: off.
            enabled         on;
# pre-file options, before "-i"
            perfile {
                re;
                rtsp_transport tcp;
}
# input format, can be:
# off, do not specifies the format, ffmpeg will guess it.
# flv, for flv or RTMP stream.
# other format, for example, mp4/aac whatever.
# default: flv
            iformat         flv;
# ffmpeg filters, follows the main input.
            vfilter {
# the logo input file.
                i               ./doc/ffmpeg-logo.png;
# the ffmpeg complex filter.
# for filters, @see: http://ffmpeg.org/ffmpeg-filters.html
                filter_complex  'overlay=10:10';
}
# video encoder name. can be:
#       libx264: use h.264(libx264) video encoder.
#       png: use png to snapshot thumbnail.
#       copy: donot encoder the video stream, copy it.
#       vn: disable video output.
            vcodec          libx264;
# video bitrate, in kbps
# @remark 0 to use source video bitrate.
# default: 0
            vbitrate        1500;
# video framerate.
# @remark 0 to use source video fps.
# default: 0
            vfps            25;
# video width, must be even numbers.
# @remark 0 to use source video width.
# default: 0
            vwidth          768;
# video height, must be even numbers.
# @remark 0 to use source video height.
# default: 0
            vheight         320;
# the max threads for ffmpeg to used.
# default: 1
            vthreads        12;
# x264 profile, @see x264 -help, can be:
# high,main,baseline
            vprofile        main;
# x264 preset, @see x264 -help, can be: 
#       ultrafast,superfast,veryfast,faster,fast
#       medium,slow,slower,veryslow,placebo
            vpreset         medium;
# other x264 or ffmpeg video params
            vparams {
# ffmpeg options, @see: http://ffmpeg.org/ffmpeg.html
                t               100;
# 264 params, @see: http://ffmpeg.org/ffmpeg-codecs.html#libx264
                coder           1;
                b_strategy      2;
                bf              3;
                refs            10;
}
# audio encoder name. can be:
#       libfdk_aac: use aac(libfdk_aac) audio encoder.
#       copy: donot encoder the audio stream, copy it.
#       an: disable audio output.
            acodec          libfdk_aac;
# audio bitrate, in kbps. [16, 72] for libfdk_aac.
# @remark 0 to use source audio bitrate.
# default: 0
            abitrate        70;
# audio sample rate. for flv/rtmp, it must be:
#       44100,22050,11025,5512
# @remark 0 to use source audio sample rate.
# default: 0
            asample_rate    44100;
# audio channel, 1 for mono, 2 for stereo.
# @remark 0 to use source audio channels.
# default: 0
            achannels       2;
# other ffmpeg audio params
            aparams {
# audio params, @see: http://ffmpeg.org/ffmpeg-codecs.html#Audio-Encoders
# @remark SRS supported aac profile for HLS is: aac_low, aac_he, aac_he_v2
                profile:a   aac_low;
                bsf:a       aac_adtstoasc;
}
# output format, can be:
#       off, do not specifies the format, ffmpeg will guess it.
#       flv, for flv or RTMP stream.
#       image2, for vcodec png to snapshot thumbnail.
#       other format, for example, mp4/aac whatever.
# default: flv
            oformat         flv;
# output stream. variables:
#       [vhost] the input stream vhost.
#       [port] the intput stream port.
#       [app] the input stream app.
#       [stream] the input stream name.
#       [engine] the tanscode engine name.
            output          rtmp://127.0.0.1:[port]/[app]?vhost=[vhost]/[stream]_[engine];
}
}
}