Initializing

Docker installation and running nginx container

• Install and run docker

• Exec ./run.sh

After this you will be able to send stream from OBS to nginx inside docker container

OBS custom stream:

url: rtmp://127.0.0.1:1935/dash stream key: live

Advanced OBS output config

• recording tab

  • custom output (ffmpeg) -> output to url -> udp://224.0.0.1:9999

  • container format (mpegts)

  • video bitrate between 3000 - 4000 kbps

  • keyframes (120) = 4s when 30fps

  • check all codecs, and select h264_videotoolbox for macOS

  • config line: -preset veryfast -profile:v baseline

  • audio bitrate: 128 - 256kbps

  • audio codec: aac

send to services

Youtube

ffmpeg -i rtmp://localhost:1935/dash/live -c:a aac -b:a 256k -c:v h264_videotoolbox -b:v 4500k -bf 4 -f flv rtmp://x.rtmp.youtube.com/live2/YOUTUBE_KEY

Facebook

ffmpeg -i rtmp://localhost:1935/dash/live -vf scale=1280:720 -c:v h264_videotoolbox -b:v 3000k -c:a aac -b:a 128k
-f flv rtmps://live-api-s.facebook.com:443/rtmp/YOUR_FACEBOOK_KEY

Instagram

ffmpeg -i rtmp://localhost:1935/dash/live -vf "scale=1280:720,crop=608:1080:656:0" -c:v h264_videotoolbox -b:v 3000k -c:a aac -b:a 128k
-f flv "rtmps://live-upload.instagram.com:443/rtmp/INSTAGRAM_KEY"

• to get Instagram Key, use YellowDuck.tv

• change libx264 to use CPU encoding or h264_videotoolbox to use GPU acceleration on macOS

Multiple services with same encoding

ffmpeg -i rtmp://localhost:1935/dash/live -vf "scale=1280:720" -c:v h264_videotoolbox
-b:v 3000k -c:a aac -b:a 128k -f mpegts - | ffmpeg -f mpegts -i -
-c copy -f flv rtmp://x.rtmp.youtube.com/live2/FACEBOOK_KEY
-c copy -f flv "rtmps://live-upload.instagram.com:443/rtmp/INSTAGRAM_KEY"

From UDP to services

ffmpeg -i udp://@:9999?overrun_nonfatal=1&fifo_size=50000000
-c copy -f flv rtmp://localhost:1935/hls/live
-c copy -f flv rtmp://x.rtmp.youtube.com/live2/FACEBOOK_KEY
-c copy -f flv "rtmps://live-upload.instagram.com:443/rtmp/INSTAGRAM_KEY"

optional

transcoding from DASH to HLS using GPU acceleration (for internal streaming)

ffmpeg -i rtmp://localhost/dash/live
-c:a aac -b:a 32k -c:v h264_videotoolbox -b:v 128k -vf scale=1280:720 -f flv rtmp://localhost/hls/live_low
-c:a aac -b:a 64k -c:v h264_videotoolbox -b:v 256k -vf scale=1280:720 -f flv rtmp://localhost/hls/live_mid
-c:a aac -b:a 128k -c:v h264_videotoolbox -b:v 3000k -vf scale=1280:720 -f flv rtmp://localhost/hls/live_hi

From local file

ffmpeg -re -i ARQUIVO.flv ....

Streaming audio from macOS to HLS in current directory

ffmpeg -f avfoundation -i ":0" -c:a aac -b:a 128k -f hls -hls_time 4 -hls_flags delete_segments index.m3u8

• List devices: ffmpeg -f avfoundation -list_devices true -i "" 2>&1|grep "input device @"|gsed -r -e 's/.* @ 0x[0-9a-f]+] //g'

Other options with ffmpeg

https://trac.ffmpeg.org/wiki/Creating%20multiple%20outputs

rtmp nginx module documentation

https://github.com/arut/nginx-rtmp-module