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• When generating a video from images and adding audio the video isn't playable

  1er août 2017, par randommman

  So I have a bunch of images in a folder, with the following structure :

  image-0.png
  
  image-1.png
  
  image-2.png

  Sometimes the folder can have just 1 image which will be saved as :

  image-0.png

  My code to generate the video and to add the audio

  // create the file
  
  using (WaveFileReader wf = new WaveFileReader(Audio))
  
  {
  
      // the files
  
      OldVideo = "old.avi";
  
      NewVideo = "video.avi";
  
      Audio = "sound.wav";
  
  
  
      // Get the time of the audio and divide by images
  
      time = wf.TotalTime.TotalSeconds;
  
      mimtime = time / imagescount;
  
  
  
      ffmpegPath = "ffmpeg.exe";
  
      ffmpegParams = " -r 1/" + mimtime + " -i " + ImagesFolder + "image-%d.png -t " + time + " -y -vf scale=1280:-2 " + OldVideo;
  
      ffmaudioParams = " -i " + OldVideo + " -i " + Audio + " -c copy -shortest " + NewVideo;
  
  }
  
  
  
  
  
  using (Process ffmpeg = new Process())
  
  {
  
      //Generate video
  
      ffmpegstartInfo = new ProcessStartInfo();
  
      ffmpegstartInfo.FileName = ffmpegPath;
  
      ffmpegstartInfo.Arguments = ffmpegParams;
  
      ffmpegstartInfo.RedirectStandardOutput = true;
  
      ffmpegstartInfo.RedirectStandardError = true;
  
      ffmpegstartInfo.UseShellExecute = false;
  
      ffmpegstartInfo.CreateNoWindow = true;
  
  
  
      ffmpeg.StartInfo.FileName = ffmpegPath;
  
      ffmpeg.StartInfo.Arguments = ffmpegParams;
  
      ffmpeg.StartInfo = ffmpegstartInfo;
  
      ffmpeg.Start();
  
      ffmpeg.WaitForExit(30000);
  
  
  
  
  
      /*ffmpeg.StartInfo.FileName = "cmd.exe";
  
      ffmpeg.StartInfo.Arguments = "/k " + ffmpegPath + " " + ffmpegParams;
  
      ffmpeg.Start();
  
      ffmpeg.WaitForExit(30000);*/
  
  }
  
  
  
  using (Process ffmaudio = new Process())
  
  {
  
      //Add audio to video
  
      ffmaudiostartInfo = new ProcessStartInfo();
  
      ffmaudiostartInfo.FileName = ffmpegPath;
  
      ffmaudiostartInfo.Arguments = ffmaudioParams;
  
      ffmaudiostartInfo.RedirectStandardOutput = true;
  
      ffmaudiostartInfo.RedirectStandardError = true;
  
      ffmaudiostartInfo.UseShellExecute = false;
  
      ffmaudiostartInfo.CreateNoWindow = true;
  
  
  
      ffmaudio.StartInfo.FileName = ffmpegPath;
  
      ffmaudio.StartInfo.Arguments = ffmaudioParams;
  
      ffmaudio.StartInfo = ffmaudiostartInfo;
  
      ffmaudio.Start();
  
      ffmaudio.WaitForExit(30000);
  
  
  
      /*ffmaudio.StartInfo.FileName = "cmd.exe";
  
      ffmaudio.StartInfo.Arguments = "/k " + ffmpegPath + " " + ffmaudioParams;
  
      ffmaudio.Start();
  
      ffmaudio.WaitForExit(30000);*/
  
  }

  So, what my code does, with the wavfilereader it gets the total length of my audio file, and then splits that time up by the number of images I have, so I can generate a video with the images split equally. Then I generate the video to a file called ’old.avi’, which is then used with my wav file to generate a new file called video.avi (which I am trying to have the generated video and audio together)

  My problem is when I generate the video it becomes uplayable. It claims to be (for example) 1 minute 50 seconds long, but once I click it, it won’t play. It just becomes unplayable, as you can see below

  http://i.imgur.com/tsck2NX.gifv

  I am using C# with process and Winforms, which opens the cmd line to run ffmpeg, with the 2 commands called above with the named variables below :

  ffmpegParams;
  
  ffmaudioParams;

  Which has all the commands I am using

  -r 1/ (audio length /divided by total images) so they're equal
  
  -t (to limit to the total time which is the audio's total seconds)
  
  ... I am using more as you can see in my code above

  How can I fix my problem, that I have described ?

  CMD line when generating the video :

  ffmpeg version N-86848-g03a9e6f Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 7.1.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 68.100 / 55. 68.100
  
    libavcodec     57.102.100 / 57.102.100
  
    libavformat    57. 76.100 / 57. 76.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 95.100 /  6. 95.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, image2, from 'C:\Users\Laptop\Documents\program/images/image-%d.png':
  
    Duration: 00:00:00.04, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba(pc), 800x800, 25 tbr, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> mpeg4 (native))
  
  Press [q] to stop, [?] for help
  
  [mpeg4 @ 00000000024f44a0] bitrate tolerance 4000000 too small for bitrate 200000, overriding
  
  Output #0, avi, to 'C:\Users\Laptop\Documents\program/old.avi':
  
    Metadata:
  
      ISFT            : Lavf57.76.100
  
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 1280x1280, q=2-31, 200 kb/s, 0.01 fps, 0.01 tbn, 0.01 tbc
  
      Metadata:
  
        encoder         : Lavc57.102.100 mpeg4
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
  
  frame=    1 fps=0.0 q=6.8 Lsize=      46kB time=00:01:37.57 bitrate=   3.9kbits/s speed=1.43e+003x
  
  video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 13.641467%

  When adding the audio to the video

  ffmpeg version N-86848-g03a9e6f Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 7.1.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    libavutil      55. 68.100 / 55. 68.100
  
    libavcodec     57.102.100 / 57.102.100
  
    libavformat    57. 76.100 / 57. 76.100
  
    libavdevice    57.  7.100 / 57.  7.100
  
    libavfilter     6. 95.100 /  6. 95.100
  
    libswscale      4.  7.101 /  4.  7.101
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Input #0, avi, from 'C:\Users\Laptop\Documents\program/old.avi':
  
    Metadata:
  
      encoder         : Lavf57.76.100
  
    Duration: 00:01:37.58, start: 0.000000, bitrate: 3 kb/s
  
      Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 1280x1280 [SAR 1:1 DAR 1:1], 0.01 fps, 0.01 tbr, 0.01 tbn, 40 tbc
  
  Guessed Channel Layout for Input Stream #1.0 : mono
  
  Input #1, wav, from 'C:\Users\Laptop\Documents\program/audio.wav':
  
    Duration: 00:01:37.57, bitrate: 352 kb/s
  
      Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 352 kb/s
  
  Output #0, avi, to 'C:\Users\Laptop\Documents\program/video.avi':
  
    Metadata:
  
      ISFT            : Lavf57.76.100
  
      Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 1280x1280 [SAR 1:1 DAR 1:1], q=2-31, 0.01 fps, 0.01 tbr, 0.01 tbn, 0.01 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 352 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #1:0 -> #0:1 (copy)
  
  Press [q] to stop, [?] for help
  
  frame=    1 fps=0.0 q=-1.0 Lsize=      55kB time=00:01:37.57 bitrate=   4.6kbits/s speed=1.95e+005x
  
  video:41kB audio:4kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 21.946869%

• FFmpeg - Concatenating videos with different resolutions

  7 août 2017, par Jill

  I currently have an android app where the videos get combined using ffmpeg’s concat. That works fine. However, when I add text (using drawtext) to one of the videos, after combining the videos again, the combined video gets distorted. The video with the drawtext shows up fine, but then the videos without text switches orientation.

  I think the problem roots from the fact that a vertical video on my android phone has the resolution of 1920x1080, however if I use that for the scale when executing drawtext, it becomes horizontal.

  I think an example might help explain this better. Let’s say I have 2 vertically recorded videos, and I combine them with concat. The combined video shows up fine. Then if I add text to the 1st video using drawtext, the combined video will then show the first video (with text) at normal orientation (vertical). However, when it transitions to the next video, it first stalls for a couple seconds and then the 2nd video is shown at a horizontal orientation.

  Also, I tried this also with having the aspect ratio as 1:1 so it wouldn’t matter, but the second video’s orientation still changed counter clockwise.

  Thanks for the help, and happy to add more clarification if needed.

  This is for adding the text :

  ffmpeg -i input.mp4 -vf drawbox=y=ih-200:color=black@0.5:width=iw:height=200:t=max
  
      ,drawtext=fontfile=RobotoRegular.ttf:text='Text':x=(w-text_w)/2:y=(h-text_h)-100:fontsize=70:fontcolor=white
  
      -c:v libx264 -b:v 17000k -r 30 -preset ultrafast -y output.mp4

  Output :

  ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
                                                         built with gcc 4.8 (GCC)
  
                                                         configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
                                                         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
  
                                                         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 '/storage/emulated/0/Android/data/com.me.app/files/65/VID_20170802_111518.mp4':
  
                                                         Metadata:
  
                                                           major_brand     : mp42
  
                                                           minor_version   : 0
  
                                                           compatible_brands: isommp42
  
                                                           creation_time   : 2017-08-02 18:15:20
  
                                                           com.android.version: 7.0
  
                                                         Duration: 00:00:00.93, start: 0.000000, bitrate: 16415 kb/s
  
                                                           Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080, 16408 kb/s, SAR 1:1 DAR 16:9, 28.94 fps, 30 tbr, 90k tbn, 180k tbc (default)
  
                                                           Metadata:
  
                                                             rotate          : 90
  
                                                             creation_time   : 2017-08-02 18:15:20
  
                                                             handler_name    : VideoHandle
  
                                                           Side data:
  
                                                             displaymatrix: rotation of -90.00 degrees
  
                                                       [libx264 @ 0xeab7ec00] using SAR=1/1
  
                                                       [libx264 @ 0xeab7ec00] using cpu capabilities: none!
  
                                                       [libx264 @ 0xeab7ec00] profile Constrained Baseline, level 4.1
  
                                                       [libx264 @ 0xeab7ec00] 264 - core 148 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=abr mbtree=0 bitrate=17000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
  
                                                       Output #0, mp4, to '/storage/emulated/0/Android/data/com.me.app/files/65/temp.mp4':
  
                                                         Metadata:
  
                                                           major_brand     : mp42
  
                                                           minor_version   : 0
  
                                                           compatible_brands: isommp42
  
                                                           com.android.version: 7.0
  
                                                           encoder         : Lavf57.25.100
  
                                                           Stream #0:0(eng): Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1080x1920 [SAR 1:1 DAR 9:16], q=-1--1, 17000 kb/s, 30 fps, 15360 tbn, 30 tbc (default)
  
                                                           Metadata:
  
                                                             handler_name    : VideoHandle
  
                                                             creation_time   : 2017-08-02 18:15:20
  
                                                             encoder         : Lavc57.24.102 libx264
  
                                                           Side data:
  
                                                             unknown side data type 10 (24 bytes)
  
                                                       Stream mapping:
  
                                                         Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
                                                       Press [q] to stop, [?] for help
  
                                                       frame=    6 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=1 drop=0 speed=   0x    
  
                                                       frame=   10 fps=8.8 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A dup=1 drop=0 speed=   0x    
  
                                                       frame=   14 fps=8.4 q=15.0 size=     155kB time=00:00:00.03 bitrate=38067.5kbits/s dup=1 drop=0 speed=0.0201x    
  
                                                       frame=   18 fps=8.0 q=22.0 size=     744kB time=00:00:00.16 bitrate=36592.5kb

  ffmpeg -f concat -safe 0 -i input.mp4 -c copy -y output.mp4

  Output :

  ffmpeg version n3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
                                                          built with gcc 4.8 (GCC)
  
                                                          configuration: --target-os=linux --cross-prefix=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --enable-libmp3lame --enable-fontconfig --enable-pthreads --disable-debug --disable-ffserver --enable-version3 --enable-hardcoded-tables --disable-ffplay --disable-ffprobe --enable-gpl --enable-yasm --disable-doc --disable-shared --enable-static --pkg-config=/home/vagrant/SourceCode/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/vagrant/SourceCode/ffmpeg-android/build/armeabi-v7a --extra-cflags='-I/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all' --extra-ldflags='-L/home/vagrant/SourceCode/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
                                                          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
  
                                                          libswscale      4.  0.100 /  4.  0.100
  
                                                          libswresample   2.  0.101 /  2.  0.101
  
                                                          libpostproc    54.  0.100 / 54.  0.100
  
                                                        [mov,mp4,m4a,3gp,3g2,mj2 @ 0xe762a600] Auto-inserting h264_mp4toannexb bitstream filter
  
                                                        Input #0, concat, from '/storage/emulated/0/Android/data/com.me.app/files/64/TXT_20170802_110325.txt':
  
                                                          Duration: N/A, start: 0.000000, bitrate: 23403 kb/s
  
                                                            Stream #0:0(eng): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1080x1920 [SAR 1:1 DAR 9:16], 23403 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc
  
                                                            Metadata:
  
                                                              handler_name    : VideoHandler
  
                                                        Output #0, mp4, to '/storage/emulated/0/Android/data/com.me.app/files/64/VID_20170802_110325concat.mp4':
  
                                                          Metadata:
  
                                                            encoder         : Lavf57.25.100
  
                                                            Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1080x1920 [SAR 1:1 DAR 9:16], q=2-31, 23403 kb/s, 30 fps, 30 tbr, 15360 tbn, 15360 tbc
  
                                                            Metadata:
  
                                                              handler_name    : VideoHandler
  
                                                        Stream mapping:
  
                                                          Stream #0:0 -> #0:0 (copy)
  
                                                        Press [q] to stop, [?] for help
  
                                                        [mov,mp4,m4a,3gp,3g2,mj2 @ 0xe762a600] Auto-inserting h264_mp4toannexb bitstream filter
  
                                                        frame=   64 fps=0.0 q=-1.0 Lsize=    5218kB time=00:00:12.30 bitrate=3474.5kbits/s speed= 122x    
  
                                                        video:5217kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.025721%

• how to install "dynaudnorm" audio filter for ffmpeg

  8 janvier 2019, par FranGar

  I am running linux Mint 17 64 bits-kernel 3.13-generic, with the ffmpeg version :

  ffmpeg version 2.4.3-1ubuntu1 trusty6 Copyright (c) 2000-2014

  I need to run the ’Dynaudnorm’ audio to compress audio files in a daily basis. But launching

  ffmpeg.exe -i "in_original.wav" -af dynaudnorm "out_normalized.wav"

  gives :

  [AVFilterGraph @ 0x1efe820] No such filter : ’dynaudnorm’

  The filter developer site explains that the integration in ffmpeg it’s already done for the latest binaries, but in my version (update yesterday) doesn’t show.

  It’s only Windows available ?