how to get the smallest possible delay on a live HLS stream to a Google cast?

Question

I am streaming a live HLS buffer with ffmpeg and I want to play it back on a Chromecast device with the lowest latency possible.

Best result I have so far is with that command:
ffmpeg -y -f x11grab -video_size 1280x720 -i :99 -f alsa -ac 2 -i pulse -fflags nobuffer -vcodec libx264 -r 24 -preset superfast -pix_fmt yuv420p -g 6 -hls_list_size 5 -hls_time 0 -strict -2 video/test.m3u8

The main issue I have is that it seems that my Google cast has a bigger buffer than when I try with VLC with a buffer of size 0, 3 seconds difference. Is there a way to make sure the device uses the smallest buffer size as possible?

I looked at the Cast reference and I haven't found anything yet.

Answer 1

Based from this blog, if videos are choppy or suffering from constant buffering interruptions, it is recommended that you reduce your video playback settings. This can be done in the Chromecast options in the upper-right-hand corner of your Chrome browser. Click the box, select Options, and reduce your streaming to Standard (480p). The video quality will take a small hit, but it should be watchable, with little to no interruption. You may also check this page for more recommendations.