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• HLS Client using FFMPEG

  20 août 2013, par Omkar

  I am a beginner to FFMPEG. Currently building a client application for HLS (Http Live Streaming) using FFMPEG. For this I find some useful functions in /libavformat/hlsproto.c and other hls related files. But not sure what are the APIs which are for clients use and how to access them for a simple HLS client. Any small examples or documents will help a lot for this.

  Thanks.

• Monitoring for failure and quickly restarting systemd service

  16 février 2024, par mzrt

  I am running a 24/7 youtube stream on Ubuntu. My ffmpeg command is wrapped in a systemd service. On several occasions the ffmpeg command has failed and systemd has not restarted quickly enough to keep the youtube stream alive. When this happens I need to daemon-reload and restart the systemd service.

  


  To counter this I have written a bash script that checks the log for stream ending errors, however, it does not seem to be working. I have had failures since implementing this script, and it did not seem to have been triggered.

  


  two questions :

  


  

  1. is there a more efficient way to do what I am doing ?

  


  2. if not, can anyone identify what I am doing wrong ?

  


  


  #!/bin/bash

RESET=0

while true; do
    # Get the current time minus 1 minute
    LAST_1_MINUTE=$(date -d '1 minute ago' '+%b %e %H:%M:%S')
    
    # Run the command to check for the error within the last minute
    if journalctl --since "$LAST_1_MINUTE" | grep -qi "Error writing trailer"; then
        if [ $RESET -lt 1 ]; then
            # Perform actions if error is detected
            sudo systemctl daemon-reload && \
            echo "Restarting master.service by monitor.sh script at $(date)" >> /var/log/monitor.log && \
            sudo systemctl restart master.service
            RESET=2
        fi
    else
        RESET=$((RESET - 1))
    fi

    # Wait for 20 seconds before the next iteration
    sleep 20
done


  


• ffmpeg - how to add multiple overlay gifs on top of video + command generator runs forever

  7 juin 2021, par عبدالله لبيب

  the user will choose multiple gifs, scale them, put them in the desired position on screen, then they will be overlayed on top of a video ..

  


  in simple case where user choose only one gif to overlay .. this line was working very well for me, but now it runs forever !! :

  


  '-i video.mp4 -ignore_loop 0 -i gif1.gif -b:v 1M '
'-filter_complex [1:v]scale=${width - 30}:${height - 30}[ovrl],'
'[0:v][ovrl]overlay=${x -30}:${y - 30}:shortest=1 output.mp4';


  


  I used shortest=1 to prevent it from running forever, but now even with shortest=1 it runs forever .. when I remove it and ignore_loop 0 the running forever problem stops, but gif works only once then stop !!

  


  how to make it work for 3 or more gifs and how to stop it from running forever when I want to make gif looping ?