How I Built a Stable 24/7 YouTube Livestream on a VPS Using FFmpeg

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Abdul Rahman built a self-hosted 24/7 YouTube livestream solution using FFmpeg on a VPS to avoid SaaS pricing and limitations; the initial stream suffered from instability due to high CPU usage.

Most live-streaming platforms present attractive pricing until continuous, long-duration streams are required, leading to significant costs or feature restrictions. Maintaining a stable livestream requires careful resource management, as CPU bottlenecks can quickly degrade stream quality and lead to viewer disruption.

Key Insights

• CPU Load & Stability: High CPU usage (98-100%) in FFmpeg directly impacts encoding stability and stream health.
• Bitrate Control: Predictable bitrate control (-b:v, -maxrate, -bufsize) is more important than maximizing resolution for consistent streaming.
• FFmpeg Tuning: Optimizing FFmpeg parameters like -preset, -g, and -keyint_min significantly improves CPU efficiency and stream reliability.

Working Example

ffmpeg -re -stream_loop -1 -i video.mp4 \
-vf scale=1280:-2 \
-c:v libx264 -preset superfast -profile:v high \
-b:v 2000k -maxrate 2000k -bufsize 4000k \
-g 60 -keyint_min 60 -r 30 -pix_fmt yuv420p \
-c:a aac -b:a 128k -ar 44100 \
-f flv rtmp://a.rtmp.youtube.com/live2/STREAM_KEY

Practical Applications

• Independent Creators: Streamers wanting to avoid SaaS fees and maintain full control over their broadcast.
• Pitfall: Neglecting CPU usage monitoring can lead to stream instability and viewer drop-off, even with sufficient bandwidth.

References:

• https://dev.to/devlobb/how-i-built-a-stable-247-youtube-livestream-on-a-vps-using-ffmpeg-no-saas-required-1bid