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• convert m3u8 to mp4 and simultaneously downloadable using http protocol

  12 juin 2020, par akshaybhuradia

  I want to convert m3u8 to mp4 and i would like to do conversion as well as download on same time. for download i have used http protocol of ffmpeg.

  



  I am running this command

  



  ffmpeg -i ultra.m3u8 -c copy -listen 1 -seekable 1 -f mp4 http://0.0.0.0:8080/test.mp4

  



  when i trigger this url("http://0.0.0.0:8080/test.mp4"), then file start's download, but i am not able to play video.

  



  and i get error when all chunks are read:

    [hls @ 0x55da053b4100] Opening 'ultra177.ts' for reading
    [tcp @ 0x55da0540f940] Connection to tcp://0.0.0.0:8080 failed: Connection refused
    [tcp @ 0x55da05520480] Connection to tcp://0.0.0.0:8080 failed: Connection refused
    [tcp @ 0x55da053ca780] Connection to tcp://0.0.0.0:8080 failed: Connection refused
    [tcp @ 0x55da05485f80] Connection to tcp://0.0.0.0:8080 failed: Connection refused
    [tcp @ 0x55da053ced40] Connection to tcp://0.0.0.0:8080 failed: Connection refused
    [tcp @ 0x55da054255c0] Connection to tcp://0.0.0.0:8080 failed: Connection refused
    [tcp @ 0x55da0540f940] Connection to tcp://0.0.0.0:8080 failed: Connection refused
    [tcp @ 0x55da05435380] Connection to tcp://0.0.0.0:8080 failed: Connection refused

frame=53236 fps=7939 q=-1.0 Lsize=  476447kB time=00:29:36.30 bitrate=2197.3kbits/s speed= 265x
video:446847kB audio:28278kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.278083%


  


• How to add multiple audio files at specific times, on a silence audio file using ffmpeg ?

  11 février 2020, par boblapointe

  I need to overlay audio files at specific times, on an existing silence.mp3. Something like that :

  [----[...audio1...]----------[...audio2...]---------------]

  I’ve tried the following but it doesn’t work :

  ffmpeg -y -i silence.mp3 -itsoffset 4 -i audio1.mp3 -itsoffset 30 -i audio2.mp3 -c:a copy final.mp3

  Any help would be appriciated. Thank you.

• Assistance required with filter graph construction(fast motion between times)

  6 janvier 2023, par D-MAN

  I am trying to re-create the following video, using ffmpeg.
https://youtu.be/eVQ9ysp0Pj0. "please check 0.19 minute for examples"
I have the following line of code which has most of the elements, except the part where is applies fast motion for 1s at certain outputs([vfr1][vfr2][vfr3])/times. currently it is only setpts=0.5*PTS[vboom] for the entire length of the video.

  


  exe = "-i " + file + " -i " + frame + " -i " + framestart + " -i " + frameEnd + " -i " + audioOverlay + " -filter_complex \"[0:v]pad="+mVideoWidth+":"+mVideoHeight+":576:0[vpad]; [vpad][1]overlay[vframed]; [vframed]split=3[vfr1][vfr2][vfr3]; [vfr1]reverse[vrev]; [vfr2][vrev][vfr3]concat=n=3,setpts=0.5*PTS[vboom]; [vboom][2]overlay=enable='lte(t,2)'[vpreout]; [vpreout][3]overlay=enable='gte(t,"+msec+"*3*0.5-2)' \" -map 4:a -b:v 8000k -shortest -preset ultrafast -crf 23 " + file2.getAbsolutePath();

  


  i have tried the following code snippets in various sections of the filter graph, with no luck !

  


  //[0:v]trim=0:2,setpts=PTS-STARTPTS[v1] ;[0:v]trim=2:5,setpts=2*(PTS-STARTPTS)[v2] ;[0:v]trim=5,setpts=PTS-STARTPTS[v3] ;
//[0:v]trim=0:10,setpts=PTS-STARTPTS[vfr1] ;[0:v]trim=10:30,setpts=PTS-STARTPTS[vfr2] ;[0:v]trim=start=30,setpts=PTS-STARTPTS[vfr3] ;
//[0:v]trim=2:3,setpts=0.75*(PTS-STARTPTS) ; [0:v]trim=4:5,setpts=0.75*(PTS-STARTPTS) ; [0:v]trim=7:8,setpts=0.75*(PTS-STARTPTS) ;
//[0:v]select='between(t,1,4)+between(t,4,6)',setpts=0.87*PTS ;