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• After scaled video, it convert transparent background to white

  8 mars 2017, par Sohaib Raza

  I scaled video using ffmpeg. When i scaled video, the output video having white background ,while the input video having transparent background.
  below command using for scaled video.

  ffmpeg -i inputVideo.mp4 -vf scale=100:100 outputVideo.mp4

  you can see the image below that is take from my video,for more understanding my problem.

  image from input video
  

  you can see the above image from input video having no white background.

  image from output video
  

  you can see the above image from output video having white backgournd.

  please give me your valuable answer regarding this question.
  any answer will be very appreciate.

  D: onProgress:   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=
D: onProgress:   libavutil      55. 17.103 / 55. 17.103
D: onProgress:   libavcodec     57. 24.102 / 57. 24.102
D: onProgress:   libavformat    57. 25.100 / 57. 25.100
D: onProgress:   libavdevice    57.  0.101 / 57.  0.101
D: onProgress:   libavfilter     6. 31.100 /  6. 31.100
D: onProgress:   libswscale      4.  0.100 /  4.  0.100
D: onProgress:   libswresample   2.  0.101 /  2.  0.101
D: onProgress:   libpostproc    54.  0.100 / 54.  0.100
D: onProgress: Input #0, gif, from '/storage/emulated/0/Pictures/eye.gif':
D: onProgress:   Duration: N/A, bitrate: N/A
D: onProgress:     Stream #0:0: Video: gif, bgra, 480x190, 5 fps, 10 tbr, 100 tbn, 100 tbc
D: onProgress: Output #0, gif, to '/storage/emulated/0/GIF/REV20170308_101145.gif':
D: onProgress:   Metadata:
D: onProgress:     encoder         : Lavf57.25.100
D: onProgress:     Stream #0:0: Video: gif, bgr8, 125x56, q=2-31, 200 kb/s, 10 fps, 100 tbn, 10 tbc
D: onProgress:     Metadata:
D: onProgress:       encoder         : Lavc57.24.102 gif
D: onProgress: Stream mapping:
D: onProgress:   Stream #0:0 -> #0:0 (gif (native) -> gif (native))
D: onProgress: Press [q] to stop, [?] for help
D: onProgress: frame=   11 fps=0.0 q=-0.0 Lsize=      17kB time=00:00:02.90 bitrate=  48.8kbits/s speed=14.8x<br />
D: onProgress: video:16kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.287261%
D: Started command : ffmpeg [Ljava.lang.String;@422f62d0
D: onSuccess: 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, gif, from '/storage/emulated/0/Pictures/eye.gif':
    Duration: N/A, bitrate: N/A
      Stream #0:0: Video: gif, bgra, 480x190, 5 fps, 10 tbr, 100 tbn, 100 tbc
  Output #0, gif, to '/storage/emulated/0/GIF/REV20170308_101145.gif':
    Metadata:
      encoder         : Lavf57.25.100
      Stream #0:0: Video: gif, bgr8, 125x56, q=2-31, 200 kb/s, 10 fps, 100 tbn, 10 tbc
      Metadata:
        encoder         : Lavc57.24.102 gif
  Stream mapping:
    Stream #0:0 -> #0:0 (gif (native) -> gif (native))
  Press [q] to stop, [?] for help
  frame=   11 fps=0.0 q=-0.0 Lsize=      17kB time=00:00:02.90 bitrate=  48.8kbits/s speed=14.8x<br />
  video:16kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.287261%

• Ffmpeg run in background and can't be stopped [closed]

  5 septembre 2024, par user27207735

  Why does ffmpeg run these services even when I'm not running anything that uses ffmpeg ? And when I turn those services off, it starts again. Can someone tell me how to stop those services and remove them completely ?

  


  OS : Ubuntu 24.04 LTS

  


  htop image

  


  What I have tried :

  


  

  • kill these processes

  


  • check startup for anything related to ffmpeg

  


  


• Can not add images after add background to audio

  16 mars 2017, par Thanh Dao

  I use below command to concat background to an audio file :

  "ffmpeg" -i /path/to/image.png -i /path/to/audio.mp3 -vsync vfr -pix_fmt yuv420p /path/to/video-1.mp4 2>&1

  Next, I use that command to add other images to created video :

  "ffmpeg" -f concat -safe 0 -i /path/to/text.txt -i /path/to/video-1.mp4 /path/to/video-2.mp4 2>&1

  Content of my text.txt file :

  /path/to/img1.jpg
  
  duration 6
  
  /path/to/img2.jpg
  
  duration 6
  
  /path/to/img3.jpg
  
  duration 6
  
  /path/to/img4.jpg
  
  duration 6

  Obtained video display only background image. Other images have not been shown.

  What are my wrong in these commands ? And how to set the display position of other images in video ? To display images by position, I use below command, but after it ran, my machine was crashed :

  "ffmpeg" -f concat -safe 0 -i /path/to/text.txt -i /path/to/video-1.mp4 -filter_complex "overlay=0:0, scale=640:640" /path/to/video-2.mp4 2>&1

  Update :

  I do follow order by below steps and got video with text and images, but the position is incorrect. I can’t find any solution for custom :

  "ffmpeg" -f concat -safe 0 -i /path/to/text.txt -i /path/to/audio.mp3 -vsync vfr -pix_fmt yuv420p /path/to/tmp-video-1.mp4 2>&1
  
  
  
  "ffmpeg" -i /path/to/background.png -i /path/to/tmp-video-1.mp4 -filter_complex "overlay=0:0" /path/to/tmp-video-2.mp4 2>&1
  
  
  
  "ffmpeg" -i /path/to/tmp-video-2.mp4 -vf "[in]<define texts="texts" and="and" duration="duration">[out]" -codec:a copy /path/to/endvideo.mp4 2>&amp;1
  
  </define>

  Please take a look my video : http://184.171.170.45/cron/tmp/funny-1489648654.mp4
  I tried to set overlay property in second command : -640:0, let images in horizontal center of background, but its not working