Howto Repaire or fix the duration of a mp4 video

Question

I'm having a film that's ffmpeg and other progs claims to be 07:03:52 long, but the real playtime is actually more like 2:35:00

ffprobe video.mp4
ffprobe version 3.0.2 Copyright (c) 2007-2016 the FFmpeg developers
  built with gcc 5.3.1 (Debian 5.3.1-17) 20160429
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libtesseract --libdir=/usr/lib/x86_64-linux-gnu --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mipsdsp --disable-mips32r2 --disable-msa --disable-mipsfpu --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libbs2b --enable-libilbc --enable-libopenh264 --enable-libkvazaar --enable-libsnappy --enable-libsoxr --enable-libiec61883 --enable-vaapi --enable-opencl --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/x86_64-linux-gnu
  libavutil      55. 17.103 / 55. 17.103
  libavcodec     57. 24.102 / 57. 24.102
  libavformat    57. 25.100 / 57. 25.100
  libavdevice    57.  0.101 / 57.  0.101
  libavfilter     6. 31.100 /  6. 31.100
  libavresample   3.  0.  0 /  3.  0.  0
  libswscale      4.  0.100 /  4.  0.100
  libswresample   2.  0.101 /  2.  0.101
  libpostproc    54.  0.100 / 54.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'video.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 1
    compatible_brands: isomavc1
    creation_time   : 2012-12-12 07:03:52
  Duration: 07:13:45.09, start: 0.000000, bitrate: 274 kb/s
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x528 [SAR 1:1 DAR 80:33], 601 kb/s, 23.98 fps, 23.98 tbr, 96k tbn, 47.95 tbc (default)
    Metadata:
      creation_time   : 2012-12-12 07:03:52
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 92 kb/s (default)
    Metadata:
      creation_time   : 2012-12-12 07:04:15
      handler_name    : GPAC ISO Audio Handler

Is there any one who can help me fix the playtime / duration with a terminal command on debian/centos

I have HandBrake-cli + FFmpeg installed

UPDATE Thought: since the video plays perfectly in various players and the frame-rate is right, how comes, that encoders like HandBrake and ffmpeg can't calculate the right duration?

UPDATE 2 - Solution I duckduckgo.com it and found a usable solution on a well.. torrent site

ffmpeg -i video.mp4 -t 2:09:39 -c:v copy -c:a copy -c:s copy out.mp4

How ever, this is not an repairing or any acclimatisation of the job, but it worked.

So summon up what this does

• ffmpeg - Video encoder
• -i source video
• -t When used as an input option (before -i), limit the duration of data read from the input file.
• -c:v + -c:a copy video+audio from source
• output file

Any optimization or acclimatisation of this workload is still welcome

Answer 1

Joakin, what you have suggested in your Update 2 is remuxing. Alternatively to what you have suggested atom manual editing can be utilized.

Manual editing is

(a) much faster - just the metadata is modified

(b) can be applied both ways - to scale up and to scale down. I have persinally succeeded in decreasing length by remuxing, but i failed in increasing it.

Answer 2

I had the same problem. I solved that by removing the audio from video. This is why the video seems frozen but it continues to play it, due to audio duration.

For that reason, you may remove entire audio from video file using "-an" ffmpeg option. When it removed, no incorrect time in video exists. You may extract audio from the initial video file, match its duration time with the video duration, and then, you encode video and audio files together, resulting no frozen video frames play.

eg.

ffmpeg -i video_to_encode.MP4  -r 16 -crf 18  -vcodec libx264 -vb 10M -an  video_output.avi

Answer 3

I also faced with this issue and I had to add -vcodec libx264 in addition to -an. Cutting a video:

ffmpeg -ss {sec2time(start)} -to {sec2time(end)} -i {video_path} -c copy -vcodec libx264 -an {save_path}