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• FFmpeg file not found exception

  26 mai 2018, par Sagar Hudge

  I am getting following exception on video trimming.

  video path : /storage/emulated/0/Pictures/Instagram/Fast & Furious 7 - Get Low Extended Version Video.mp4

  file name : Fast & Furious 7 - Get Low Extended Version Video.mp4

  and ffmpeg searching for only Fast in

  /storage/emulated/0/Pictures/Instagram/Fast: No such file or directory

  I have found the issue ,it is causing due to the file name having spaces in between them you can check in above mentioned path and in exception.

  after changing file name its working but changing name of every file from device its not the right way so how can I solve this exception

  FAILED with output : WARNING: linker: /data/user/0/com.example.SeekBarActivity/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
  
    /storage/emulated/0/Pictures/Instagram/Fast: No such file or directory

• Camera2 video recording with custom resolutions ?

  14 avril 2020, par Chitrang

  Currently, I am following google's sample code in Kotlin for Camera2 API. Everything seems working fine in terms of video recording. However, I do have different requirements for my project as listed below.

  



  I need to record a video in three possible ways 640 x 640(square), Y x 640(portrait), or 640 x Y(landscape) in portrait screen where Y is a number less than 640. 

  



  640 x 640(square) :
I have Samsung S9+ which supports only one resolution with 1:1 aspect ration which is 384x384, but when I post on Instagram they create a video with 720 x 720 resolution with good quality. So the question is how Instagram is enlarging a low-resolution video without losing quality ?

  



  W ? x 640(portrait) :
I need to find out an equal or high resolution with the closest matching aspect ratio and later on, I can run the FFmpeg command to match with the required size, right ?

  



  640 x H ?(landscape) :
I can follow the same thing as in the portrait use case. However, the real question is how to record a video in the landscape if your screen is in Portrait orientation ?

  



  I have already researched a lot on each use case and now open for any possible solutions like FFMpeg, OpenGL, MediaMuxer, MediaCodec or anything else ?

  



  Any hint, links or suggestion would be highly appreciated. Thanks in advance.

  


• ffmpeg convert 2tb of video from dropbox on EC2 instance

  30 juillet 2021, par Misha

  My dropbox account is full and I need to convert from uncompressed video to mpeg-4 format. I´ve used ffmpeg for this earlier and the compression works quite fine and provides an impressive file reduction allowing for reasonable quality. All my video files are stored in my dropbox account in multiple folders each having 5-20 uncompressed files of approx 1-2 Gb each that I stich together and generate a final file (1-10hrs long) for each folder. Previously I´ve downloaded each folder to my local harddrive and done the conversion locally, but it takes a long time. I can set up my EC2 instance for dropbox integration, but the question is :

  


  


  • How can I just transfer one folder at a time from dropbox to my ec2 instance and can I transfer the resulting compressed file back to a
another dropbox folder containing just the compressed files while
also deleting the uncompressed folder ?

    


  


  • Any suggestions for a suitable instance that provides sufficient disk, memory and CPU resources for this ?