live streaming notes

notes.md

youtube

• create an event and setup custom ingestion so you get an rtmp url, then use something like to stream from a mac's webcam:

ffmpeg -f avfoundation -i "default" -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -acodec aac -ab 128k -g 50 -strict experimental -f flv -s 426x240 "<rtmp_path>/<stream_id>"

zencoder

• setup a bucket that's CORS-capable as per these docs
• setup gcs keys as per their docs and then send a request ala:

{
    "live_stream": true,
    "region": "us-central-gce",
    "output": [
        {
            "label": "livestream-name",
            "size": "480x270",
            "video_bitrate": 300,
            "url": "gcs://some-bucket",
            "credentials": "credentials-nickname-in-zencoder",
            "type": "segmented",
            "live_stream": true,
            "headers":{
                "x-goog-acl": "public-read"
            }
        }
    ]
}

this responds with rtmp info, you can then make stream from a mac's webcam:

ffmpeg -f avfoundation -i "default" -s 284x164 -vcodec libx264 -preset ultrafast -tune stillimage -f flv <zencoder-rtmp-path>/<zencoder-key>

bitmovin

• they have a nice tutorial but you need a paid plan to try it out

on efficiency

• ffmpeg's streaming guide
• zencoder's recommendations
• one fellow's experiences
• notes on wowza