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• FFMPEG performance on remote server

  9 avril 2022, par Haider Ali

  I am experiencing a completely different performance for FFMPEG on server as compare to development machine. Parameters used are

  


  ffmpeg -i input.mp4 -ss 00:00 -to 02:20 -codec:v libx264 -preset ultrafast -force_key_frames 'expr:gte(t,n_forced*4)' -hls_time 4 -hls_playlist_type vod -hls_segment_type mpegts output.mp4


  


  Development Machine Specs

  


  MacBook Pro (15-inch, 2019)
  
Processor 2.6 GHz 6-Core Intel Core i7
  
Memory 16 GB 2400 MHz DDR4
  
Graphics Intel UHD Graphics 630 1536 MB

  


  Remote Server Specs
  
8 VCPU
  
32 GB

  


  Does ffmpeg need to have special specs to run on server ?

  


  Same above command can take 15 to 20 minute on server while on development machine it only takes 2 minutes.

  


• Révision 23382 : Intégration du plugin Menus Prive Alpha (suite et fin)

  5 février 2017, par marcimat@rezo.net

  Dans le bandeau, on indique par une classe CSS les entrées favorites,
  et s’il y a des favoris dans un menu, les entrées non favorites (pour aider à styler aucazou).
  On décore un peu.
  On passe aussi en 2 colonnes lorsqu’il y a plus de 20 entrées dans un menu.

• ffmpeg is making my audio and video frozen and I don't know why

  17 avril 2024, par Sdpro

  I'm using bunjs runtime to execute ffmpeg as terminal code but I don't know if my code is typescript code is wrong or ffmpeg is wrong
and I'm using json file to get the clips correctly

  


      let videos = 0;
    let stepsTrim = "";
    let concatInputs = "";

    for (let i = 0; i < 40; i++) {
        if (unwantedWords[i].keepORdelete === true) {
            stepsTrim += `[0:v]trim=0:${
                unwantedWords[i].start
            },setpts=PTS[v${i}];[0:a]atrim=0:${
                unwantedWords[i].start
            },asetpts=PTS-STARTPTS[a${i}];[0:v]trim=${unwantedWords[i].start}:${
                unwantedWords[i].end
            },setpts=PTS[v${unwantedWords.length + i + 1}];[0:a]atrim=${
                unwantedWords[i].start
            }:${unwantedWords[i].end},asetpts=PTS-STARTPTS[a${
                unwantedWords.length + i + 1
            }];`;

            concatInputs += `[v${i}][a${i}][v${unwantedWords.length + i + 1}][a${
                unwantedWords.length + i + 1
            }]`;
            videos += 2; 
        }
    }

    stepsTrim = stepsTrim.slice(0, -1);

    await $`ffmpeg -hide_banner -i ${videoRequirements.output} -filter_complex "${stepsTrim},${concatInputs} concat=n=${videos}:v=1:a=1[outv][outa]" -map "[outv]" -map "[outa]" -c:v libopenh264 -preset slow -c:a mp3 -vsync 1 -y ${removedUnwantedWords}/fastAf.mp4`;


  


  at the end after everything was done :

  


  warning
[vost#0:0/libopenh264 @ 0x558f80ea1dc0] More than 1000 frames duplicated.9kbits/s dup=110 drop=1 speed=0.831x    
[out_0_0 @ 0x558f8100a880] 100 buffers queued in out_0_0, something may be wrong. dup=1064 drop=1 speed=1.43x    
[out_0_1 @ 0x558f8100af80] 100 buffers queued in out_0_1, something may be wrong.
[out_0_1 @ 0x558f8100af80] 1000 buffers queued in out_0_1, something may be wrong.
I can't figure out why ffmpeg is sometimes making the audio + video work and sometimes not
[enter image description here](https://i.stack.imgur.com/PicaA.png)


  


  [
  {
    "word": "Hello",
    "id": 0,
    "keepORdelete": false,
    "start": 0,
    "end": 9.06
  },
  {
    "word": "guys,",
    "id": 1,
    "keepORdelete": false,
    "start": 9.06,
    "end": 10.2
  },
  {
    "word": "there",
    "id": 2,
    "keepORdelete": false,
    "start": 11.76,
    "end": 12.06
  },
...


  


  I have tried commands from many types of ffmpeg commands changing the code and I can't seem to get the audio and video right