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• FFmpeg On iOS can’t find delogo

  8 mai 2018, par Y.Y.Doe

  I integrated FFmpeg on iOS，and use “delogo” to clean watermark，but it does not work.
  And it logs :

  No such filter:delogo

  I don’t know why,and I need help

  it’s my iOS code to use FFmpeg

  dispatch_async(dispatch_get_global_queue(0, 0), ^{
  
      char *outPic = (char *)[DocumentPath(@"delogo.mp4") UTF8String];
  
      char *movie = (char *)[BundlePath(@"logo.mp4") UTF8String];
  
      char *a[] = {
  
          "ffmpeg",
  
          "-i",
  
          movie,
  
          "-vf",
  
          "delogo=x=10:y=10:w=250:h=120:show=1",
  
          outPic
  
      };
  
      ffmpeg_main(sizeof(a)/sizeof(*a),a);
  
  });

  my total log

  ffmpeg version 3.0 Copyright (c) 2000-2016 the FFmpeg developers
 built with Apple LLVM version 7.3.0 (clang-703.0.31)
 configuration: --target-os=darwin --arch=arm64 --cc='xcrun -sdk iphoneos clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch arm64 -mios-version-min=6.0 -fembed-bitcode' --extra-ldflags='-arch arm64 -mios-version-min=6.0 -fembed-bitcode' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/arm64
 WARNING: library configuration mismatch
 avutil      configuration: --target-os=darwin --arch=x86_64 --cc='xcrun -sdk iphonesimulator clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch x86_64 -mios-simulator-version-min=6.0' --extra-ldflags='-arch x86_64 -mios-simulator-version-min=6.0' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/x86_64
 avcodec     configuration: --target-os=darwin --arch=x86_64 --cc='xcrun -sdk iphonesimulator clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch x86_64 -mios-simulator-version-min=6.0' --extra-ldflags='-arch x86_64 -mios-simulator-version-min=6.0' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/x86_64
 avformat    configuration: --target-os=darwin --arch=x86_64 --cc='xcrun -sdk iphonesimulator clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch x86_64 -mios-simulator-version-min=6.0' --extra-ldflags='-arch x86_64 -mios-simulator-version-min=6.0' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/x86_64
 avdevice    configuration: --target-os=darwin --arch=x86_64 --cc='xcrun -sdk iphonesimulator clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch x86_64 -mios-simulator-version-min=6.0' --extra-ldflags='-arch x86_64 -mios-simulator-version-min=6.0' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/x86_64
 avfilter    configuration: --target-os=darwin --arch=x86_64 --cc='xcrun -sdk iphonesimulator clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch x86_64 -mios-simulator-version-min=6.0' --extra-ldflags='-arch x86_64 -mios-simulator-version-min=6.0' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/x86_64
 swscale     configuration: --target-os=darwin --arch=x86_64 --cc='xcrun -sdk iphonesimulator clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch x86_64 -mios-simulator-version-min=6.0' --extra-ldflags='-arch x86_64 -mios-simulator-version-min=6.0' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/x86_64
 swresample  configuration: --target-os=darwin --arch=x86_64 --cc='xcrun -sdk iphonesimulator clang' --enable-cross-compile --disable-debug --disable-programs --disable-doc --enable-pic --extra-cflags='-arch x86_64 -mios-simulator-version-min=6.0' --extra-ldflags='-arch x86_64 -mios-simulator-version-min=6.0' --prefix=/Users/lxh/Desktop/FFmpeg-iOS-build-script-master/thin/x86_64
 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
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/Users/daiyangyang/Library/Developer/CoreSimulator/Devices/02A8BC3F-5E46-453A-A3B4-A42563C518EA/data/Containers/Bundle/Application/4E0BB47F-5D3E-42A3-BC76-2D7D03657870/去水印.app/logo.mp4':
 Metadata:
   major_brand     : isom
   minor_version   : 512
   compatible_brands: isomiso2mp41
   encoder         : Lavf57.25.100
 Duration: 00:02:31.37, start: 0.023220, bitrate: 472 kb/s
   Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x352 [SAR 1:1 DAR 20:11], 338 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 24k tbc (default)
   Metadata:
     handler_name    : VideoHandler
   Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 129 kb/s (default)
   Metadata:
     handler_name    : SoundHandler
[AVFilterGraph @ 0x7fbabb519e00] No such filter: 'delogo'
Error opening filters!

  I integrated FFmpeg by "FFmpeg-iOS-build-script"(https://github.com/kewlbear/FFmpeg-iOS-build-script)

• How to save udp stream to TS files with FFMPEG while keeping timecode ?

  20 août 2014, par vlatkozelka

  I need to record a live udp stream containing multiple TV programs ( up to 30 ) to .ts files .To do so i’m using FFMPEG .

  I have a muxer at work , but i dont go there everyday so im using a sample .ts file containing 15 minutes recording of all the tv channels , but i tried on both and i got same results so i guess thats not a problem .The TS file is basically the same as udp , but just as a file . Same timebase , encoding , programs

  here is the code i am using :

  ffmpeg -i "d:\record ts\PBR_REC_20140426094852_485.ts" -f segment -segment_time 300 -acodec copy -vcodec copy -map 0:p:1202 "file:C:\Users\vlatkozelka\Desktop\TEST\%date:~10%%date:~7,2%%date:~4,2%%time:~0,2%%time:~3,2%%03d.ts"

  this is extracting one tv channel , program 1202 , and recording files in this format : DateTime001 ,DateTime002 .... 5 minutes each.

  now when i run these in a player i made in JAVA, which is the purpose of these, ... i can see the timestamp is reset to 00:00:00 for each file beginning. I know its not a problem in the player itself cuz i tried with other files and the timestamps are ok.

  I tried adding -copyts which for some strange reason seems to segment to 1 second long files , i tried -copytb 1 , 0 , -1 , all failed , tried -vsync passthrough , also failed (i also tried cominations of these ) And from what ive read FFMPEG guards timecode as it is by default , the build im using is fairly new i downloaded it like a month ago . And i know also that FLV requires resetting timecode , but TS is used for transport so shouldnt do this ... any ideas ?Also is there a way to slow down the copying from file to file , cuz its too fast its killing my HDD ( i mean from the .ts to the .ts not the actual udp ) ?
  thanks

• Bulk audio watermarking with ffmpeg

  19 novembre 2022, par Джанкарло Шатунов

  I have about 10,000 audio files that I need to overlay with copyright sound. How can this be done with ffmpeg ? Maybe there is a script for mass combining audio into one track ?

  


  If there is a simpler solution, I will be very grateful, since several days of googling did not lead to anything. Either I found programs without a job description, or solutions that only do one file at a time.