Can I specify how many frames to read?

[zengqingfa]

Hello, I want to save the video every half an hour, may I ask how to achieve?

[aler9]

Hello, this library doesn't support decoding H264 (only receiving it), in order to do so you can use ffmpeg inside a loop:

while true; do
    ffmpeg -re -i rtsp://... -vframes 1 -q:v 2 output.jpg
    sleep 1800
done