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• What is a good/simple way to obtain a stream of song metadata from an online radio station ?

  29 juin 2022, par esp

  What is a good/simple way to obtain a stream of song metadata (artist names and song titles etc.) from an online radio station ? Just the metadata, not the data (media). On bash command-line for now, thinking of getting it to a database (eg MySQL) in future.

  


  I have had success using FFMpeg to do this (simply FFMpeg -i <streamurl></streamurl>). However it only reports the song playing once - when it is run. If I specify an outputfile (e.g. -f null -) then it continues to run but does not report any updates to the "now playing" metadata. If I do not specify an output file then, after reporting that metadata, it quits (which in my case is more useful !).

  


  I can imagine one way round this would be to make a polling-loop, say every 10 seconds, only reporting when the metadata has changed (since the previous time). Does anyone have a battle-tested example ?

  


  But is there a better (or cooler way) to achieve this ?

  


• Extract thumbnail from video in amazon s3 and store it in amazon s3 [closed]

  24 juin 2021, par Kanav Raina

  I want to extract thumbnail from video and store it on s3.

  


  import ffmpeg

url="https://link_to_s3_video.mp4"

(
    ffmpeg
    .input(url, ss='00:00:03')  
    .output("frame.png", pix_fmt='rgb24', frames='1')  
    .overwrite_output()
    .run()
)


  


  I am able to extract image but now how should I pass this image to file_upload function and store it on s3

  


  def file_upload(file, filename):
    link = f"https://{PUBLIC_BUCKET_NAME}.s3.us-east-2.amazonaws.com/images/{filename}"
    try:
        s3.Object(PUBLIC_BUCKET_NAME, f"images/{filename}").load()
    except ClientError as e:
        if e.response['Error']['Code'] == "404":
            try:
                s3_client.upload_fileobj(
                    file,
                    PUBLIC_BUCKET_NAME,
                    f"images/{filename}",
                    ExtraArgs={'ACL': 'public-read'}
                )

                return 200, link
            except ClientError as e:
                logging.error(e)
                return 500, ""
        else:
            return 500, ""
    else:
        return 409, link


  


  Thanks

  


• ffmpeg stucks after each song

  11 juin 2017, par Halfbax

  When I start to stream to youtube, it works fine. Until the first song is over. After it the stream is in a loop of the last 20 seconds. I dont know why. The next song wont ever streamed.

  The audio stream is lag-free. <- tested

  case $1 in
  
                  start)
  
                          # VLC audio stream
  
                          su vlc -c "screen -dmS $VLC_PID_NAME cvlc --random /home/music/chill/*.mp3 --sout '#transcode{vcodec=none,acodec=mp3,ab=128}:standard{access=http,mux=raw,dst=localhost:8080/live.ogg}'"
  
  
  
                          sleep 2
  
                          # FFMPEG
  
                          # Static image + vlc audio stream
  
                          screen -dmS $FFMPEG_PID_NAME ffmpeg -loop 1 -framerate 2 -i '/home/forest.jpg' -i 'http://localhost:8080/live.ogg' -s "$INRES" -r "$FPS" -f alsa -ac 2 -vcodec libx264 -s "$OUTRES" -g 2 -acodec libmp3lame -b:a 128k -b:v 200k -ar 44100 -threads 0 -preset:v "$QUAL" -f flv "rtmp://a.rtmp.youtube.com/live2/$STREAM_KEY"
  
                          ;;