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• How to convert mp4 file to y4m file ?

  25 novembre 2014, par user3752324

  I want to convert .mp4 formatted video to .y4m formatted video . Can I do this using ffmpeg ? or If there is/are some other way then please tell me.
  Thanks in Advance.

• ffmpeg error "No such file or directory" while compiling a video file compression

  13 janvier 2016, par Abraham Gharyali

  Firstly I have checked many questions and answers related to my question, but unfortunately none of them solves my problem.

  I have implemented ffmpeg library in my project, using it for 2 tasks :

  1). adding watermark on video.

  2). video compression.

  I am able to apply watermark on recorded video successfully using this command :

  {"-y" ,"-i", "/storage/emulated/0/Booms/Videos/video1122150738.mp4","-strict","experimental", "-vf", "movie="
  
  + watermarkFile + " [watermark]; [in][watermark] overlay=main_w-overlay_w-10:10 [out]","-s", "320x240","-r", "30", "-b", "15496k", "-vcodec", "mpeg4","-ab", "48000", "-ac", "2", "-ar", "22050", "/storage/emulated/0/Shared/Videos/video.mp4"}

  "watermarkFile" is the location of .png watermark file

  Now I need to compress video, for that i used this command :

  "ffmpeg -i "+"/storage/emulated/0/Booms/Videos/video1122150738.mp4"+" -vcodec mpeg4 -s 320x240 -r 25 -y "+"/storage/emulated/0/Shared/Videos/video.mp4";

  It gives error "No such file or directory". please see the logs.

  01-11 15:32:39.283 28027-28027/ I/FFmpeg: Loading FFmpeg for armv7-neon CPU
  
  01-11 15:32:39.439 28027-28027/ D/FFMPEG: onSuccess.
  
  01-11 15:32:39.440 28027-28027/ D/FFMPEG: onFinish.
  
  01-11 15:32:55.584 28027-28027/ D/FFMPEG compress: input path: /storage/emulated/0/Booms/Videos/video1122150738.mp4
  
  01-11 15:32:55.585 28027-28027/ D/FFMPEG compress: output path: /storage/emulated/0/Shared/Videos/video.mp4
  
  01-11 15:32:55.587 28027-28027/ D/FFMPEG compress: Started.
  
  01-11 15:32:55.618 28027-28089/ D/FFmpeg: Running publishing updates method
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress: WARNING: linker: /data/data/packge_name/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress: ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavutil      54.  7.100 / 54.  7.100
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavcodec     56.  1.100 / 56.  1.100
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavformat    56.  4.101 / 56.  4.101
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavdevice    56.  0.100 / 56.  0.100
  
  01-11 15:32:55.662 28027-28027/ D/FFMPEG compress: Progress:   libavfilter     5.  1.100 /  5.  1.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress:   libswscale      3.  0.100 /  3.  0.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress:   libswresample   1.  1.100 /  1.  1.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress:   libpostproc    53.  0.100 / 53.  0.100
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Progress: ffmpeg -i /storage/emulated/0/Booms/Videos/_video1122150738.mp4 -vcodec mpeg4 -s 320x240 -r 25 -y /storage/emulated/0/Shared/Videos/video.mp4: No such file or directory
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Failure: WARNING: linker: /data/data/package_name/files/ffmpeg has text relocations. This is wasting memory and prevents security hardening. Please fix.
  
                                                                                ffmpeg version n2.4.2 Copyright (c) 2000-2014 the FFmpeg developers
  
                                                                                  built on Oct  7 2014 15:08:46 with gcc 4.8 (GCC)
  
                                                                                  configuration: --target-os=linux --cross-prefix=/home/sb/Source-Code/ffmpeg-android/toolchain-android/bin/arm-linux-androideabi- --arch=arm --cpu=cortex-a8 --enable-runtime-cpudetect --sysroot=/home/sb/Source-Code/ffmpeg-android/toolchain-android/sysroot --enable-pic --enable-libx264 --enable-libass --enable-libfreetype --enable-libfribidi --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/sb/Source-Code/ffmpeg-android/ffmpeg-pkg-config --prefix=/home/sb/Source-Code/ffmpeg-android/build/armeabi-v7a-neon --extra-cflags='-I/home/sb/Source-Code/ffmpeg-android/toolchain-android/include -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all -mfpu=neon' --extra-ldflags='-L/home/sb/Source-Code/ffmpeg-android/toolchain-android/lib -Wl,-z,relro -Wl,-z,now -pie' --extra-libs='-lpng -lexpat -lm' --extra-cxxflags=
  
                                                                                  libavutil      54.  7.100 / 54.  7.100
  
                                                                                  libavcodec     56.  1.100 / 56.  1.100
  
                                                                                  libavformat    56.  4.101 / 56.  4.101
  
                                                                                  libavdevice    56.  0.100 / 56.  0.100
  
                                                                                  libavfilter     5.  1.100 /  5.  1.100
  
                                                                                  libswscale      3.  0.100 /  3.  0.100
  
                                                                                  libswresample   1.  1.100 /  1.  1.100
  
                                                                                  libpostproc    53.  0.100 / 53.  0.100
  
                                                                                ffmpeg -i /storage/emulated/0/Booms/Videos/video1122150738.mp4 -vcodec mpeg4 -s 320x240 -r 25 -y /storage/emulated/0/Shared/Videos/video.mp4: No such file or directory
  
  01-11 15:32:55.663 28027-28027/ D/FFMPEG compress: Finished.

  for both operations i input .mp4 file and need .mp4 file in output.

  Same process works for watermarking and not working for compression.

  My compress command is correct because I checked the same command compressing video in my windows pc using command prompt.

  I don’t understand what i am doing wrong.

  Any help would be appreciated.

• avconv : use file:stream instead of file.stream in log messages.

  6 novembre 2011, par Anton Khirnov

  avconv : use file:stream instead of file.stream in log messages.