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Sur d’autres sites (7038)

  • How to copy video duration to the output file with ffmpeg ? [closed]

    5 novembre 2024, par user28147375

    I want to copy the input's duration to the output. Is there even a way in ffmpeg to achieve this ?
There is nothing about this in the docs.

    


    I'm currently using these flags :

    


    const ffmpegProcess = cp.spawn(ffmpegPath, [
       '-i', `pipe:3`,
       '-i', `pipe:4`,
       '-map', '0:v:0',
       '-map', '1:a:0',
       '-c:v', 'copy',
       '-c:a', 'aac',
       '-crf', '27',
       '-pix_fmt', 'yuv420p',
       '-preset', 'veryfast',
       '-movflags', 'frag_keyframe+empty_moov',
       '-f', 'mp4',
       '-shortest',
        '-'
    ], {
        windowsHide: true,
        stdio: [
            'pipe', 'pipe', 'inherit', 'pipe', 'pipe'
        ],
    });


    


    The problem :

    


    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'pipe:3':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6avc1mp41
    creation_time   : 2024-10-05T10:39:09.000000Z
  Duration: 00:02:18.14, start: 0.000000, bitrate: N/A
Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 1 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default)


    


    Output #0, mp4, to 'pipe:':
  Metadata:
    major_brand     : dash
    minor_version   : 0
    compatible_brands: iso6avc1mp41
    encoder         : Lavf60.3.100
  ---> (DURATION MISSING) <---
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1 kb/s, 23.98 fps, 23.98 tbr, 24k tbn (default)


    


  • FFMPEG "buffer queue overflow, dropping" with trim and atrim filters

    11 décembre 2016, par Prasanna Mahendiran

    In FFMPEG I am actually trimming and concating a 24 FPS video. When I apply a complex filter

    ffmpeg -i sample.mp4 -filter_complex \
    
  "[0:v]setpts = PTS-STARTPTS[bv];
    
  [bv]split=6[v0][v1][v2][v3][v4][v5];
    
  [v0]trim=start_frame=1:end_frame=142,loop=1:1:1,setpts=N/FRAME_RATE/TB[0v];
    
  [v1]trim=start_frame=846:end_frame=878,loop=1:1:1,setpts=N/FRAME_RATE/TB[1v];
    
  [v2]trim=start_frame=57:end_frame=114,loop=1:1:1,setpts=N/FRAME_RATE/TB[2v];
    
  [v3]trim=start_frame=865:end_frame=885,loop=1:1:1,setpts=N/FRAME_RATE/TB[3v];
    
  [v4]trim=start_frame=70:end_frame=155,loop=1:1:1,setpts=N/FRAME_RATE/TB[4v];
    
  [v5]trim=start_frame=155:end_frame=909,loop=1:1:1,setpts=N/FRAME_RATE/TB[5v];
    
  [0:a]asplit=6[a0][a1][a2][a3][a4][a5];
    
  [a0]atrim=0.041666666666666664:5.917,asetpts=N/SR/TB[0a];
    
  [a1]atrim=35.256:36.603,asetpts=N/SR/TB[1a];
    
  [a2]atrim=2.379:4.767,asetpts=N/SR/TB[2a];
    
  [a3]atrim=36.024:36.859,asetpts=N/SR/TB[3a];
    
  [a4]atrim=2.93:6.438172,asetpts=N/SR/TB[4a];
    
  [a5]atrim=6.438172:37.895,asetpts=N/SR/TB[5a];
    
  [0v][0a][1v][1a][2v][2a][3v][3a][4v][4a][5v][5a]concat=n=6:v=1:a=1[vv][aa]"\
    
  -map "[vv]" -map "[aa]" output.mp4

    I am getting "buffer queue overflow, dropping" error. The resultant video and audio is still and not working properly.

    ffmpeg version 3.2-1~16.04.york1 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.4.1 (Ubuntu 5.4.1-3ubuntu1~ubuntu16.04.1york0) 20161019
    
  configuration: --prefix=/usr --extra-version='1~16.04.york1' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-libtesseract --disable-stripping --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librubberband --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-opengl --enable-sdl2 --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-openal --enable-frei0r --enable-libopencv --enable-libx264 --enable-chromaprint --enable-shared
    
  libavutil      55. 34.100 / 55. 34.100
    
  libavcodec     57. 64.100 / 57. 64.100
    
  libavformat    57. 56.100 / 57. 56.100
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'sample.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    track           : 0
    
    artist          : 
    
    album           : 
    
    date            : 0
    
    genre           : 
    
    lyrics          : 
    
    title           : 
    
    encoder         : Lavf56.36.100
    
  Duration: 00:00:37.90, start: 0.000000, bitrate: 951 kb/s
    
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 820 kb/s, 24 fps, 24 tbr, 12288 tbn, 48 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 126 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
File 'output.mp4' already exists. Overwrite ? [y/N] y
    
[libx264 @ 0x55650097a540] using SAR=1/1
    
[libx264 @ 0x55650097a540] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x55650097a540] profile High, level 3.0
    
[libx264 @ 0x55650097a540] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    track           : 0
    
    artist          : 
    
    album           : 
    
    date            : 0
    
    genre           : 
    
    lyrics          : 
    
    title           : 
    
    encoder         : Lavf57.56.100
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 24 fps, 12288 tbn, 24 tbc (default)
    
    Metadata:
    
      encoder         : Lavc57.64.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc57.64.100 aac
    
Stream mapping:
    
  Stream #0:0 (h264) -> setpts
    
  Stream #0:1 (aac) -> asplit
    
  concat:out:v0 -> Stream #0:0 (libx264)
    
  concat:out:a0 -> Stream #0:1 (aac)
    
Press [q] to stop, [?] for help
    
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 471.5kbits/s speed=4.94x    
    
    Last message repeated 201 times
    
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 522.9kbits/s speed=3.89x    
    
    Last message repeated 1266 times
    
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 557.0kbits/s speed=3.28x    
    
    Last message repeated 48 times
    
[output stream 0:1 @ 0x556500947e20] 100 buffers queued in output stream 0:1, something may be wrong.
    
[Parsed_concat_33 @ 0x55650097b420] Buffer queue overflow, dropping. 718.6kbits/s speed=3.46x    
    
    Last message repeated 19 times
    
[output stream 0:0 @ 0x5565009785c0] 100 buffers queued in output stream 0:0, something may be wrong.
    
frame= 1091 fps=117 q=-1.0 Lsize=    2795kB time=00:00:45.51 bitrate= 503.1kbits/s dup=475 drop=0 speed=4.88x    
    
video:2455kB audio:316kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.861779%
    
[libx264 @ 0x55650097a540] frame I:8     Avg QP:19.26  size: 24207
    
[libx264 @ 0x55650097a540] frame P:409   Avg QP:21.33  size:  4108
    
[libx264 @ 0x55650097a540] frame B:674   Avg QP:27.46  size:   949
    
[libx264 @ 0x55650097a540] consecutive B-frames: 10.3% 13.9% 24.5% 51.3%
    
[libx264 @ 0x55650097a540] mb I  I16..4:  9.9% 57.0% 33.1%
    
[libx264 @ 0x55650097a540] mb P  I16..4:  3.6%  7.6%  2.9%  P16..4: 33.0% 10.6%  3.0%  0.0%  0.0%    skip:39.2%
    
[libx264 @ 0x55650097a540] mb B  I16..4:  0.4%  0.8%  0.4%  B16..8: 24.5%  2.6%  0.2%  direct: 0.5%  skip:70.5%  L0:55.5% L1:41.8% BI: 2.7%
    
[libx264 @ 0x55650097a540] 8x8 transform intra:53.8% inter:66.7%
    
[libx264 @ 0x55650097a540] coded y,uvDC,uvAC intra: 44.6% 50.0% 14.8% inter: 6.2% 7.7% 0.2%
    
[libx264 @ 0x55650097a540] i16 v,h,dc,p: 22% 28% 17% 33%
    
[libx264 @ 0x55650097a540] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 23% 28%  3%  4%  3% 11%  3%  5%
    
[libx264 @ 0x55650097a540] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 26% 26% 16%  2%  5%  3% 16%  3%  3%
    
[libx264 @ 0x55650097a540] i8c dc,h,v,p: 60% 22% 13%  6%
    
[libx264 @ 0x55650097a540] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x55650097a540] ref P L0: 72.6%  8.4% 15.1%  3.9%
    
[libx264 @ 0x55650097a540] ref B L0: 88.5% 10.7%  0.8%
    
[libx264 @ 0x55650097a540] ref B L1: 93.3%  6.7%
    
[libx264 @ 0x55650097a540] kb/s:442.30
    
[aac @ 0x556500979280] Qavg: 3215.870

    I tried with other stackoverflow questions but none of them worked. Also I think it is partially because the trim timings are mixed. That is start time can be anywhere between 0-end. When I make it strictly increasing it is working fine.

  • merge (video and sound) with (background music)

    27 novembre 2016, par Nir di

    i have video file vid.mpg that contain video and audio(speaking) and audio file aud.wav that contain background music.

    now, i want to merge them together.

    here is the command that i use :

    ffmpeg -i vid.mpg -i aud.mp3 -c:v copy  -filter_complex "[0:a]aformat = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a][1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg

    and this is the error that i get as response :

    [Parsed_amerge_4 @ 00000000003a36e0] No channel layout for input 1
    
[Parsed_amerge_4 @ 00000000003a36e0] Input channel layouts overlap: output layou
    
t will be determined by the number of distinct input channels
    
[mpeg @ 000000000289a4e0] VBV buffer size not set, using default size of 130KB
    
If you want the mpeg file to be compliant to some specification
    
Like DVD, VCD or others, make sure you set the correct buffer size

    in addition i add the full log :

    C:\bina\ffmpeg\bin>ffmpeg -i vid.mpg -i
    
aud.mp3 -c:v copy  -filter_complex "[1:a]aform
    
at = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a]
    
[1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg
    
ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
    
ibilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopenc
    
ore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --ena
    
ble-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable
    
-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --ena
    
ble-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx
    
264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable
    
-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 19.100 / 55. 19.100
    
  libavcodec     57. 27.101 / 57. 27.101
    
  libavformat    57. 28.100 / 57. 28.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 39.100 /  6. 39.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mpeg, from 'vid.mpg':
    
  Duration: 00:00:33.62, start: 0.529978, bitrate: 22407 kb/s
    
    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 1920x1080 [SAR 1:
    
1 DAR 16:9], max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s
    
[mp3 @ 00000000003e3c20] Skipping 0 bytes of junk at 253.
    
Input #1, mp3, from 'aud.mp3':
    
  Metadata:
    
    encoder         : Lavf57.28.100
    
  Duration: 00:01:03.03, start: 0.025057, bitrate: 128 kb/s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc57.27
    
File 'out.mpg' already exists. Overwrite
    
 ? [y/N] y
    
[Parsed_amerge_4 @ 00000000003a36e0] No channel layout for input 1
    
[Parsed_amerge_4 @ 00000000003a36e0] Input channel layouts overlap: output layou
    
t will be determined by the number of distinct input channels
    
[mpeg @ 000000000289a4e0] VBV buffer size not set, using default size of 130KB
    
If you want the mpeg file to be compliant to some specification
    
Like DVD, VCD or others, make sure you set the correct buffer size
    
Output #0, mpeg, to 'out.mpg':
    
  Metadata:
    
    encoder         : Lavf57.28.100
    
    Stream #0:0: Video: mpeg2video, yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-3
    
1, max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
    
    Stream #0:1: Audio: mp2, 44100 Hz, stereo, s16, 384 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc57.27.101 mp2
    
Stream mapping:
    
  Stream #1:0 (mp3) -> aformat
    
  Stream #1:0 (mp3) -> aformat
    
  Stream #0:0 -> #0:0 (copy)
    
  amerge -> Stream #0:1 (mp2)
    
Press [q] to stop, [?] for help
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=234676 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=234676 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=236705 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=236705 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=238746 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=238746 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=240787 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=240787 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=242828 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=242828 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=244869 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=244869 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=246910 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=246910 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=248951 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=248951 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=250992 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=250992 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=253033 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=253033 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=255074 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=255074 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=257115 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=257115 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=259156 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=259156 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=261197 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=261197 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=263238 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=263238 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=265279 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=265279 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=267320 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=267320 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=269361 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=269361 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=271402 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=271402 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=273443 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=273443 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=275484 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=275484 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=277525 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=277525 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=279566 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=279566 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=281607 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=281607 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=283648 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=283648 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=285689 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=285689 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=287730 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=287730 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=289771 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=289771 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=291812 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=291812 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=293853 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=293853 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=295894 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=295894 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=297935 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=297935 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=299976 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=299976 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=302017 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=302017 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=304058 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=304058 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=306099 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=306099 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=308140 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=308140 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=310181 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=310181 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=312222 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=312222 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=314263 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=314263 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=316304 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=316304 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=318345 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=318345 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=320386 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=320386 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=322427 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=322427 size=322616
    
frame=    1 fps=0.0 q=-1.0 Lsize=     318kB time=00:00:00.00 bitrate=N/A speed=
    
  0x
    
video:315kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o
    
verhead: 0.934858%
    

    
C:\bina\ffmpeg\bin>ffmpeg -i vid.mpg -i
    
aud.mp3 -c:v copy  -filter_complex "[0:a]aform
    
at = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a]
    
[1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg

    what am i doing wrong ? and how can i solve it ?

    please help.

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