FFmpeg - Gcore Documentation

FFmpeg can push a live stream to Gcore Video Streaming over RTMP. Configure it with the server URL and stream key from the Gcore Customer Portal, then run FFmpeg with the recommended encoding settings for live ingest.

Setup

Install FFmpeg. Download instructions are available on ffmpeg.org.
In the Gcore Customer Portal, navigate to Streaming → Live Streaming, then open the live stream settings for the target stream. In the URLs for encoder section, select RTMP and copy the Server URL and Stream Key values.

Live stream settings page showing the URLs for encoder section with Server and Stream Key fields

Append the Stream Key to the Server URL to form the full RTMP URL:

rtmp://vp-push-ed2.gvideo.co/in/400448?cdf2a7ccf990e464c2b…

Open a terminal and run FFmpeg with the input source and the RTMP URL:

ffmpeg {INPUT_OPTIONS} \
  -c:v libx264 -preset veryfast -b:v 2000k \
  -profile:v baseline -vf format=yuv420p \
  -r 30 -g 60 \
  -c:a aac -b:a 128k -ar 48000 -ac 2 \
  -f flv {RTMP_URL}

Replace {INPUT_OPTIONS} with the FFmpeg input flags for the camera, screen capture, or media file. Replace {RTMP_URL} with the URL formed in step 2.

Recommended encoding settings

Setting	Value	FFmpeg flag
Video encoder	H.264	`-c:v libx264`
Video bitrate	2000 Kbps (720p) or 4000 Kbps (1080p)	`-b:v 2000k` or `-b:v 4000k`
CPU preset	veryfast	`-preset veryfast`
Profile	Baseline	`-profile:v baseline -vf format=yuv420p`
Frame rate	30 fps	`-r 30`
Keyframe interval	60 frames (2 seconds at 30 fps)	`-g 60`
Audio encoder	AAC	`-c:a aac`
Audio bitrate	128 Kbps	`-b:a 128k`
Sample rate	48 kHz	`-ar 48000`
Channels	Stereo	`-ac 2`

Downscale resolution (optional)

To reduce the source resolution, replace -vf format=yuv420p in the main command with a combined filter chain that applies both scaling and pixel format conversion:

-vf "scale=1280:720:flags=bicubic,format=yuv420p"

Keep the rest of the command unchanged.