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• FFmpeg creates empty palette, for better quality GIF conversion

  16 mars 2018, par 1234567

  FFmpeg creates empty palette, for better quality GIF conversion

  I have referred to

  https://ffmpeg.org/ffmpeg-filters.html#palettegen-1

  https://superuser.com/a/556031/724432

  but it creates an empty pallete file

  I am trying it on android

  the command used is

  {"-y", "-i", j, "-ss", 10, "-t",3,"-vf","fps=15,scale=300:-1:flags=lanczos,palettegen", palette};

  and the error that is shown is

  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/sdcard0/try/Videos/2018-03-13-15-47-29.mp4.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2018-03-13 15:47:33
  
    Duration: 00:00:03.39, start: 0.000000, bitrate: 615 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x540, 637 kb/s, SAR 1:1 DAR 16:9, 22.95 fps, 60 tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        creation_time   : 2018-03-13 15:47:33
  
        handler_name    : VideoHandle
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 12 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-03-13 15:47:33
  
        handler_name    : SoundHandle
  
  Output #0, image2, to '/storage/sdcard0/try/Gifs//2018-03-16-11-36-48.png':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      encoder         : Lavf57.25.100
  
      Stream #0:0(eng): Video: png, rgba, 16x16 [SAR 1:1 DAR 1:1], q=2-31, 200 kb/s, 10 fps, 10 tbn, 10 tbc (default)
  
      Metadata:
  
        creation_time   : 2018-03-13 15:47:33
  
        handler_name    : VideoHandle
  
        encoder         : Lavc57.24.102 png
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> png (native))
  
  Press [q] to stop, [?] for help
  
  frame=    0 fps=0.0 q=0.0 size=N/A time=00:00:00.00 bitrate=N/A speed=   0x    
  
  frame=    0 fps=0.0 q=0.0 size=N/A time=00:00:00.00 bitrate=N/A speed=   0x    
  
  [Parsed_palettegen_2 @ 0xac96ed80] 255(+1) colors generated out of 3594 colors; ratio=0.070952
  
  [Parsed_palettegen_2 @ 0xac96ed80] Dupped color: FF5F5F5F
  
  frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=   0x    
  
  video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  any help would be useful

• Concat different video file types with different fps and resolutions using FFmpeg

  10 juillet 2018, par 1234567

  This is the command I am using :

  {"-y", "-i", file1.toString(), "-i", file2.toString(), "-strict", "experimental", "-filter_complex",
  
                  "[0:v]scale=480x640,setsar=1:1[v0];[1:v]scale=480x640,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1",
  
                  "-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "480x640", "-vcodec", "libx264","-crf","27","-q","4","-preset", "ultrafast", rootPath + "/output.mp4"};

  When file types are similar, in my case mp4, and with same fps 30 and same resolution, 720 x 980, they do merge properly. But when I try different file types, say AVI, 3gp, mp4, then all with different fps and resolution and the AVI file with no audio, I get following error :

  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/sdcard0/tyry/Videos/1.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2018-03-14 16:22:27
  
    Duration: 00:01:06.07, start: 0.000000, bitrate: 10775 kb/s
  
      Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x540, 10757 kb/s, SAR 1:1 DAR 16:9, 47.06 fps, 90k tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        creation_time   : 2018-03-14 16:22:27
  
        handler_name    : VideoHandle
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 12 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-03-14 16:22:27
  
        handler_name    : SoundHandle
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/sdcard0/tyry/Videos/2018-03-17-11-33-07.mp4.mp4':
  
    Metadata:
  
      major_brand     : mp42
  
      minor_version   : 0
  
      compatible_brands: isommp42
  
      creation_time   : 2018-03-17 11:33:15
  
    Duration: 00:00:06.63, start: 0.000000, bitrate: 1030 kb/s
  
      Stream #1:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 426x240, 1013 kb/s, SAR 1:1 DAR 71:40, 33.65 fps, 90k tbr, 90k tbn, 180k tbc (default)
  
      Metadata:
  
        creation_time   : 2018-03-17 11:33:15
  
        handler_name    : VideoHandle
  
      Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 16000 Hz, mono, fltp, 12 kb/s (default)
  
      Metadata:
  
        creation_time   : 2018-03-17 11:33:15
  
        handler_name    : SoundHandle
  
  [Parsed_concat_0 @ 0xacb60d40] Input link in1:v0 parameters (size 426x240, SAR 1:1) do not match the corresponding output link in0:v0 parameters (960x540, SAR 1:1)
  
  [Parsed_concat_0 @ 0xacb60d40] Failed to configure output pad on Parsed_concat_0
  
  Error configuring complex filters.
  
  Invalid argument

  What is the proper command to concat different file types, with different fps, and different resolution and map audio properly to a set fps and resolution, output being mp4 file ?

• creating a video using ffmpeg command with image name pattern [duplicate]

  21 mars 2018, par Junaid Farooq

  This question already has an answer here :

  • ffmpeg img to video = Could find no file with path
    
    2 answers
    

  I am coming from this question
  https://askubuntu.com/questions/610903/how-can-i-create-a-video-file-from-a-set-of-jpg-images

  Everything is working fine and I can create a video, I am only struggling with the image name pattern. Each time, I had to rename all files first to a specific pattern.

  Can we create a video using the same command written below but with this kind of image name pattern ?

  2018-01-19-11-55-00.jpg  2018-01-19-17-00-00.jpg  2018-01-22-10-10-00.jpg  2018-01-22-13-25-00.jpg  2018-01-22-16-40-00.jpg
  
  2018-01-19-12-00-00.jpg  2018-01-19-17-05-00.jpg  2018-01-22-10-15-00.jpg  2018-01-22-13-30-00.jpg  2018-01-22-16-45-00.jpg

  I want to use this command

  ffmpeg -framerate 25 -i image-%04d.jpg -c:v libx264 -profile:v high -crf 20 -pix_fmt yuv420p output.mp4

  but this one using

  image-2000.jpg  image-2400.jpg  image-2800.jpg

  above image pattern.

  Is there any possibility to use the above pattern of files which are being named as a date. also, all these images are in a folder. Can FFMPEG address them ?