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  • Flutter FFmpeg | Concat Multiple Videos From TXT File And Save As A Video

    7 mai 2023, par Muhammad Hassan

    I have a text file with all path of video files that I want to concat using
https://pub.dev/packages/ffmpeg_kit_flutter in my flutter app.

    


    For this purpose, I write a file my_file.txt with the below data...

    


    /data/user/0/com.example.video_merger/cache/75f72300-1203-4e2c-93cf-65777152f1d16524788775537818173.mp4
/data/user/0/com.example.video_merger/cache/318d5ea7-3e0c-4453-903b-06966aa86f348487775694692938421.mp4


    


    Now I am using the below code to merge all the upper videos.

    


    String outputPath = "/data/user/0/com.example.video_merger/app_flutter/output.mp4";
String commandToExecute = '-f concat -i $rawDocumentPath/my_file.txt -c copy $outputPath';
FFmpegKit.execute(commandToExecute).then((session) async {
  final returnCode = await session.getReturnCode();
  print("FFmpeg Process Exited With ReturnCode = $returnCode");
  GallerySaver.saveVideo(outputPath).then((_) {
    print("Merged Video Saved");
  });
  if (ReturnCode.isSuccess(returnCode)) {
    // SUCCESS
  } else if (ReturnCode.isCancel(returnCode)) {
    // CANCEL
  } else {
    // ERROR
  }
});


    


    But it is giving me error as shown below...

    


    FFmpeg Process Exited With ReturnCode = 1 
E/GallerySaver(31493): /data/user/0/com.example.video_merger/app_flutter/output.mp4: open failed: ENOENT (No such file or directory)


    


    But when I use the below ffmpeg command directly without reading from text file works fine and save my video.

    


    String commandToExecute = '-y -i ${_storedVideoOne!.path} -i ${_storedVideoTwo!.path} -r 24000/1001 -filter_complex \'[0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1[out]\' -map \'[out]\' $outputPath';


    


    Now my question is that I will have dynamic number of videos to concat so I want to use text file where I will write all paths then will make merged video from them. So what is the error in my ffmpeg command...???

    


    Log Report :

    


    I used the log reporting as follows to get the below output of errors...

    


        FFmpegKit.executeAsync(
      commandToExecute2,
          (session) async {
            final returnCode = await session.getReturnCode();
            print("FFmpeg Process Exited With ReturnCode = $returnCode");
            GallerySaver.saveVideo(outputPath).then((_) async {
              print("Merged Video Saved");
            });
            if (ReturnCode.isSuccess(returnCode)) {
              // SUCCESS
            } else if (ReturnCode.isCancel(returnCode)) {
              // CANCEL
            } else {
              // ERROR
            }
          },
          (log) {
        print("XXXXXXXXXXXX fFmpeg XXXXXXXXXX ${log.getMessage()}");
      },
    );


    


    And here is the Log Output...

    


    I/flutter ( 5432): Text On File: /data/user/0/com.example.video_merger/cache/75f72300-1203-4e2c-93cf-65777152f1d16524788775537818173.mp4
I/flutter ( 5432): /data/user/0/com.example.video_merger/cache/318d5ea7-3e0c-4453-903b-06966aa86f348487775694692938421.mp4
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX ffmpeg version n5.1.2
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX Copyright (c) 2000-2022 the FFmpeg developers
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  configuration: --cross-prefix=aarch64-linux-android- --sysroot=/files/android-sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/home/taner/Projects/ffmpeg-kit/prebuilt/android-arm64/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --target-os=android --enable-neon --enable-asm --enable-inline-asm --ar=aarch64-linux-android-ar --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --ranlib=aarch64-linux-android-ranlib --strip=aarch64-linux-android-strip --nm=aarch64-linux-android-nm --extra-libs='-L/home/taner/Projects/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-static --enable-shared --enable-pthreads --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-t
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  libavutil      57. 28.100 / 57. 28.100
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  libavcodec     59. 37.100 / 59. 37.100
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  libavformat    59. 27.100 / 59. 27.100
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  libavdevice    59.  7.100 / 59.  7.100
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  libavfilter     8. 44.100 /  8. 44.100
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  libswscale      6.  7.100 /  6.  7.100
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX  libswresample   4.  7.100 /  4.  7.100
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX [concat @ 0xb400007d62447910] Line 1: unknown keyword '/data/user/0/com.example.video_merger/cache/75f72300-1203-4e2c-93cf-65777152f1d16524788775537818173.mp4'
I/flutter ( 5432): XXXXXXXXXXXX fFmpeg XXXXXXXXXX /data/user/0/com.example.video_merger/app_flutter/my_file.txt: Invalid data found when processing input
I/flutter ( 5432): FFmpeg Process Exited With ReturnCode = 1


    


  • ffmpeg : cannot copy data stream

    31 mars 2023, par darkshine — , , ,

    I've got the video file captured by DJI drone. The file contains the video stream and two data streams of unknown format. I would like to convert the video from to and also save the both data streams. Unfortunately, I cannot force to copy the data streams from input to the output.

    


    Here is the mp4 file :

    


    ffprobe DJI_0019.MP4

    


    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5631004c2730] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'DJI_0019.MP4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : replaced_timestamp
    encoder         : DJIMavic3
  Duration: 00:01:05.66, start: 0.000000, bitrate: 128915 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160, 127648 kb/s, 29.41 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    Metadata:
      creation_time   : replaced_timestamp
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Data: none (djmd / 0x646D6A64), 13 kb/s
    Metadata:
      creation_time   : replaced_timestamp
      handler_name    : DJI meta
  Stream #0:2(und): Data: none (dbgi / 0x69676264), 1190 kb/s
    Metadata:
      creation_time   : replaced_timestamp
      handler_name    : DJI dbgi
  Stream #0:3: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 960x540 [SAR 1:1 DAR 16:9], 90k tbr, 90k tbn, 90k tbc (attached pic)
Unsupported codec with id 0 for input stream 1
Unsupported codec with id 0 for input stream 2


    


    I tried the command below :

    


    ffmpeg -i DJI_0019.MP4 -map 0 -c:v libx265 -crf 25 -c:d copy -copy_unknown DJI_0019.v2.MP4

    


    The command fails with the following error. The output file is empty.

    


    [mp4 @ 0x556d0180ced0] Could not find tag for codec none in stream #1, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:0 --


    


    Note that for "-c:d" option I tried different suggested values, none of them succeeded :

    


    copy
none
bin
bin_data
data
null
file


    


    In the meantime an attempt to save the data streams to separate files succeeds for the both of them with the commands :

    


    ffmpeg -i DJI_0019.MP4 -map 0:d:0 -c copy -copy_unknown -f data DJI_0019.data0.bin

    


    ffmpeg -i DJI_0019.MP4 -map 0:d:1 -c copy -copy_unknown -f data DJI_0019.data1.bin

    


    How to force to copy the data streams from input to output ?

    


    This is the ffmpeg's info :

    


    ffmpeg version 4.4.3 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 11.3.0 (Gentoo 11.3.0 p5)
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 
--docdir=/usr/share/doc/ffmpeg-4.4.3/html --mandir=/usr/share/man --enable-shared 
--cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar 
--nm=x86_64-pc-linux-gnu-nm --strip=x86_64-pc-linux-gnu-strip 
--ranlib=x86_64-pc-linux-gnu-ranlib --pkg-config=x86_64-pc-linux-gnu-pkg-config 
--optflags='-O2 -pipe -march=native' --disable-static --enable-avfilter --enable-avresample 
--disable-stripping --disable-optimizations --disable-libcelt --disable-indev=oss 
--disable-indev=jack --disable-indev=sndio --disable-outdev=oss --disable-outdev=sndio 
--enable-nonfree --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-gcrypt 
--enable-gnutls --disable-gmp --enable-gpl --disable-hardcoded-tables --enable-iconv 
--disable-libxml2 --disable-lzma --enable-network --disable-opencl --disable-openssl 
--enable-postproc --disable-libsmbclient --enable-ffplay --enable-sdl2 --disable-vaapi 
--disable-vdpau --disable-vulkan --enable-xlib --enable-libxcb --enable-libxcb-shm 
--enable-libxcb-xfixes --enable-zlib --enable-libcdio --disable-libiec61883 
--disable-libdc1394 --enable-libcaca --disable-openal --disable-opengl --enable-libv4l2 
--disable-libpulse --disable-libdrm --disable-libjack --disable-libopencore-amrwb 
--disable-libopencore-amrnb --disable-libcodec2 --enable-libdav1d --enable-libfdk-aac 
--disable-libopenjpeg --disable-libbluray --disable-libgme --disable-libgsm 
--disable-libaribb24 --disable-mmal --disable-libmodplug --disable-libopus 
--disable-libilbc --disable-librtmp --disable-libssh --disable-libspeex --disable-libsrt 
--disable-librsvg --disable-ffnvcodec --disable-libvorbis --disable-libvpx --disable-libzvbi 
--disable-appkit --disable-libbs2b --disable-chromaprint --disable-cuda-llvm 
--disable-libflite --disable-frei0r --disable-libvmaf --disable-libfribidi 
--disable-fontconfig --disable-ladspa --enable-libass --disable-libtesseract 
--disable-lv2 --disable-libfreetype --disable-libvidstab --disable-librubberband 
--disable-libzmq --disable-libzimg --disable-libsoxr --enable-pthreads --disable-amf 
--disable-libvo-amrwbenc --disable-libkvazaar --disable-libaom --enable-libmp3lame 
--disable-libopenh264 --disable-librav1e --disable-libsnappy --disable-libsvtav1 
--disable-libtheora --disable-libtwolame --disable-libwebp --enable-libx264 --enable-libx265 
--enable-libxvid --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-neon 
--disable-vfp --disable-vfpv3 --disable-armv8 --disable-mipsdsp --disable-mipsdspr2 
--disable-mipsfpu --disable-altivec --disable-vsx --disable-power8 --disable-amd3dnow 
--disable-amd3dnowext --disable-aesni --disable-avx --disable-avx2 --disable-fma3 
--disable-fma4 --disable-sse3 --disable-ssse3 --disable-sse4 --disable-sse42 --disable-xop 
--cpu=host --disable-doc --disable-htmlpages --enable-manpages
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100


    


  • FFmpeg - Copy a (not A/V) data stream from input MP4 file [closed]

    31 mars 2023, par darkshine

    I've got an MP4 video file captured by DJI drone. The file contains the video stream (H.264) and also two data streams of unknown format. I would like to convert the video from h.264 to h.265 and also save both of the included data streams. Unfortunately, I cannot force FFmpeg to copy the data streams across from the input file into the output file.

    


    Here is the mp4 file :

    


    ffprobe DJI_0019.MP4

    


    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5631004c2730] stream 0, timescale not set
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'DJI_0019.MP4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : replaced_timestamp
    encoder         : DJIMavic3
  Duration: 00:01:05.66, start: 0.000000, bitrate: 128915 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 3840x2160, 127648 kb/s, 29.41 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    Metadata:
      creation_time   : replaced_timestamp
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Data: none (djmd / 0x646D6A64), 13 kb/s
    Metadata:
      creation_time   : replaced_timestamp
      handler_name    : DJI meta
  Stream #0:2(und): Data: none (dbgi / 0x69676264), 1190 kb/s
    Metadata:
      creation_time   : replaced_timestamp
      handler_name    : DJI dbgi
  Stream #0:3: Video: mjpeg (Baseline), yuvj420p(pc, bt470bg/unknown/unknown), 960x540 [SAR 1:1 DAR 16:9], 90k tbr, 90k tbn, 90k tbc (attached pic)
Unsupported codec with id 0 for input stream 1
Unsupported codec with id 0 for input stream 2


    


    I tried the command below :

    


    ffmpeg -i DJI_0019.MP4 -map 0 -c:v libx265 -crf 25 -c:d copy -copy_unknown DJI_0019.v2.MP4

    


    The command fails with the following error. The output file is empty.

    


    [mp4 @ 0x556d0180ced0] Could not find tag for codec none in stream #1, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:0 --


    


    Note that for "-c:d" option I tried different suggested values, none of them succeeded :

    


    copy
none
bin
bin_data
data
null
file


    


    In the meantime an attempt to save the data streams to separate files succeeds for the both of them with the commands :

    


    ffmpeg -i DJI_0019.MP4 -map 0:d:0 -c copy -copy_unknown -f data DJI_0019.data0.bin

    


    ffmpeg -i DJI_0019.MP4 -map 0:d:1 -c copy -copy_unknown -f data DJI_0019.data1.bin

    


    Question :

    


    How to force FFmpeg to copy the data streams from input to output ?

    


    This is the ffmpeg's info :

    


    ffmpeg version 4.4.3 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 11.3.0 (Gentoo 11.3.0 p5)
  configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 
--docdir=/usr/share/doc/ffmpeg-4.4.3/html --mandir=/usr/share/man --enable-shared 
--cc=x86_64-pc-linux-gnu-gcc --cxx=x86_64-pc-linux-gnu-g++ --ar=x86_64-pc-linux-gnu-ar 
--nm=x86_64-pc-linux-gnu-nm --strip=x86_64-pc-linux-gnu-strip 
--ranlib=x86_64-pc-linux-gnu-ranlib --pkg-config=x86_64-pc-linux-gnu-pkg-config 
--optflags='-O2 -pipe -march=native' --disable-static --enable-avfilter --enable-avresample 
--disable-stripping --disable-optimizations --disable-libcelt --disable-indev=oss 
--disable-indev=jack --disable-indev=sndio --disable-outdev=oss --disable-outdev=sndio 
--enable-nonfree --enable-bzlib --disable-runtime-cpudetect --disable-debug --disable-gcrypt 
--enable-gnutls --disable-gmp --enable-gpl --disable-hardcoded-tables --enable-iconv 
--disable-libxml2 --disable-lzma --enable-network --disable-opencl --disable-openssl 
--enable-postproc --disable-libsmbclient --enable-ffplay --enable-sdl2 --disable-vaapi 
--disable-vdpau --disable-vulkan --enable-xlib --enable-libxcb --enable-libxcb-shm 
--enable-libxcb-xfixes --enable-zlib --enable-libcdio --disable-libiec61883 
--disable-libdc1394 --enable-libcaca --disable-openal --disable-opengl --enable-libv4l2 
--disable-libpulse --disable-libdrm --disable-libjack --disable-libopencore-amrwb 
--disable-libopencore-amrnb --disable-libcodec2 --enable-libdav1d --enable-libfdk-aac 
--disable-libopenjpeg --disable-libbluray --disable-libgme --disable-libgsm 
--disable-libaribb24 --disable-mmal --disable-libmodplug --disable-libopus 
--disable-libilbc --disable-librtmp --disable-libssh --disable-libspeex --disable-libsrt 
--disable-librsvg --disable-ffnvcodec --disable-libvorbis --disable-libvpx --disable-libzvbi 
--disable-appkit --disable-libbs2b --disable-chromaprint --disable-cuda-llvm 
--disable-libflite --disable-frei0r --disable-libvmaf --disable-libfribidi 
--disable-fontconfig --disable-ladspa --enable-libass --disable-libtesseract 
--disable-lv2 --disable-libfreetype --disable-libvidstab --disable-librubberband 
--disable-libzmq --disable-libzimg --disable-libsoxr --enable-pthreads --disable-amf 
--disable-libvo-amrwbenc --disable-libkvazaar --disable-libaom --enable-libmp3lame 
--disable-libopenh264 --disable-librav1e --disable-libsnappy --disable-libsvtav1 
--disable-libtheora --disable-libtwolame --disable-libwebp --enable-libx264 --enable-libx265 
--enable-libxvid --disable-armv5te --disable-armv6 --disable-armv6t2 --disable-neon 
--disable-vfp --disable-vfpv3 --disable-armv8 --disable-mipsdsp --disable-mipsdspr2 
--disable-mipsfpu --disable-altivec --disable-vsx --disable-power8 --disable-amd3dnow 
--disable-amd3dnowext --disable-aesni --disable-avx --disable-avx2 --disable-fma3 
--disable-fma4 --disable-sse3 --disable-ssse3 --disable-sse4 --disable-sse42 --disable-xop 
--cpu=host --disable-doc --disable-htmlpages --enable-manpages
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100


    


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