[FFmpeg-user] [FFMPEG]Mux audio video - delay issue

[Antonio Rolo]

Hi,
I would like to use the audio of video1.mp4 in video2.avi but can't manage to find the correct procedure. The 2 videos have exactly the same content but not the same duration. I tried to use "ffmpeg -i video2.avi -filter:v "setpts=0,996932336679635*PTS" -qscale:v 1 video2_a.avi" to change the duration or change the frame rate but at the end there is a delay issue when I apply the audio.

Below the output requested for ffmpeg -i video1.mp4 -i video2.avi. Thanks for your support.

ffmpeg version N-87871-g7480f232d2 Copyright (c) 2000-2017 the FFmpeg developers  built with gcc 7.2.0 (GCC)
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
  libavutil      55. 79.100 / 55. 79.100
  libavcodec     57.108.100 / 57.108.100
  libavformat    57. 84.100 / 57. 84.100
  libavdevice    57. 11.100 / 57. 11.100
  libavfilter     6.108.100 /  6.108.100
  libswscale      4.  9.100 /  4.  9.100
  libswresample   2. 10.100 /  2. 10.100
  libpostproc    54.  8.100 / 54.  8.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.56.101
  Duration: 00:44:57.52, start: 0.000000, bitrate: 9659 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/unknown/smpte170m), 640x480 [SAR 1:1 DAR 4:3], 9346 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 307 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'video2.avi':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.56.101
  Duration: 00:45:05.66, start: 0.000000, bitrate: 12585 kb/s
    Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, smpte170m/unknown/smpte170m), 720x480 [SAR 1:1 DAR 3:2], 12286 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 290 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
At least one output file must be specified

      De : Carl Eugen Hoyos <ceffmpeg at gmail.com>
 À : FFmpeg user questions <ffmpeg-user at ffmpeg.org> 
 Envoyé le : Vendredi 20 octobre 2017 0h35
 Objet : Re: [FFmpeg-user] [FFMPEG]Mux audio video - delay issue
   
2017-10-19 17:43 GMT+02:00 Antonio Rolo <antonio.rolo-at-yahoo.fr at ffmpeg.org>:

> Any clue about my issue below ?

Please start with "ffmpeg -i video1.mp4 -i video2.mp4" and provide
the complete, uncut console output, remember that only current
FFmpeg (git head) is supported here.

Carl Eugen
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