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• FFmpeg has text relocation's.This is wasting memory and prevents security hardening

  6 février 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

  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

• Grafika and OpenGL to record a video on android in square shape

  3 octobre 2015, par Cédric Portmann

  I am currently trying to record a video in square shape and create a output as .mp4. It seems to be really challenging. I tried diffrent approches including : OnPreviewFrame and FFMpeg. But never got a satisfing result. Today i found Grafika. And it seems to be the right way. But because of the complextity of the Code i am stuck now. Using the Example : CameraCaptureActivity.java i managed to record a video. But its shape is rectangluar and not square. Furthermore the camera is rotated by 90 degrees. I was already trying to manipulate certain parameters but never got a good video. Some where squeezed and so on.

  Does anybody know what parameters i need to change inside Grafikas example to get the right result ?
  In the end the camera of my android phone should record Videos like Vine or Instagram.

  Thanks for your help !

• adaptive bitrate, Is it better to reduce the resolution of a video or just reduce it's bitrate ?

  29 janvier 2018, par loki

  I must provide my videos in adaptive bitrate (HLS). To do this I need to provide several videos at different bitrate. Using ffmpeg :

  1. I can make several variants of the video at the same resolution but at different bitrate.
  2. I can make several variants of the video at different resolutions resulting in different bitrate.

  So what is the way to go ? What settings does other services like youtube/instagram/facebook use ?