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  • 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

    


  • lavc/hevc_refs : exclude current frame from long term refs

    15 juillet 2022, par Xu Guangxin
    lavc/hevc_refs : exclude current frame from long term refs

    suppose
    
a. You have 3 frames, 0, 1, 4096.
    
b. The ltMask is 0xfff and use_msb is 0.
    
c. The 0, 1 are lt refs for 4096.
    
d. you are decoding frame 4096, and get the 0 frame.
    
Since 4096 & ltMask is 0 too, even you want get 0, find_ref_idx may give you 4096.
    
add_candidate_ref will report an error for this
    

    Tested-by : Fei Wang <fei.w.wang@intel.com>
    
Signed-off-by : Xu Guangxin <guangxin.xu@intel.com>
    • [DH] libavcodec/hevc_refs.c

  • lavc/vaapi_encode_h264 : disable B frames in baseline profile

    8 janvier 2017, par Jun Zhao
    lavc/vaapi_encode_h264 : disable B frames in baseline profile

    Disable B frames when using baseline/constrained baseline profile,
    
following H.264 spec Annex A.2.1.
    

    Signed-off-by : Jun Zhao <jun.zhao@intel.com>
    
Signed-off-by : Yi A Wang <yi.a.wang@intel.com>
    
Signed-off-by : Mark Thompson <sw@jkqxz.net>
    • [DH] libavcodec/vaapi_encode_h264.c

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