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• Android Camera App Performance Increases [closed]

  5 novembre 2012, par Spentak

  I am writing a video recording app but am finding it quite impossible to match the frames per second that are on the native Android device video camera app (on Samsung Galaxy sIII). On the native app I can record at 1920x1080 with effects on at an amazing FPS (not sure exactly what it is but it looks like 25+ fps).

  In my app on the sIII my video recording is incredibly unstable and choppy even at 640x480. My FPS drops to 7 when recording at 640x480. When I add effects the FPS drops to 3-5.

  Can someone help me figure out how to get an FPS that is equal to the native Android camera app (specifically on the sIII) ?

  At this point I'm not sure where to optimize.

  And for reference, I am just doing the standard video recording stuff as in :
  How can I capture a video recording on Android ?

  Thanks !

• Use build_libstagefright in ffmpeg to build file .so for android

  21 décembre 2014, par OneGuilty

  In order to use ffmpeg in android , I tried to build ffmpeg by using build_libstagefright in

  ffmpeg/tools/lib_stagefright

  but it alwalys appear a error which i coundn’t solve it.

  the message in the bottom of ffmpeg/config.log is

  arm-linux-androideabi-g++ -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -DPIC -I../android-source/frameworks/base/include -I../android-source/system/core/include -I../android-source/frameworks/base/media/libstagefright -I../android-source/frameworks/base/include/media/stagefright/openmax -I/home/user/android-ndk/sources/cxx-stl/gnu-libstdc++/include -I/home/user/android-ndk/sources/cxx-stl/gnu-libstdc++/libs/armeY-›v7a/include -march=armv7-a -mfloat-abi=softfp -mfpu=neon -march=armv7-a -std=c99 -fomit-frame-pointer -fPIC -marm -Wno-multichar -fno-exceptions -fno-rtti -D__STDC_CONSTANT_MACROS -c -o /tmp/ffconf.6ZzEMs87.o /tmp/ffconf.5jbfvJxK.cpp

  ./configure : line 701 : /home/user/android-ndk/toolchains/arm-linux-androideabi-4.4.3/prebuilt/linux-x86/bin/arm-linux-androideabi-g++ : cannot execute binary file

  ERROR : libstagefright_h264 not found

  Anyone have the solution of this ??

  my Build Environment is

  1. Window 7
  2. Cygwin
  3. android-NDK-r8b linux version

• Restreaming video containing two languages live with ffmpeg

  9 novembre 2012, par user1810837

  I have a project where i need to restream a live stream which has two languages setup on the audio.
  Spanish on left and English on right

  The stream mapping is :

  Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p, 512x288 [SAR 1:1 DAR 16:9], q=2-31, 1k tbn, 1k tbc
  
  Stream #0:1: Audio: mp3 ([2][0][0][0] / 0x0002), 44100 Hz, stereo, s16, 18 kb/s

  I need to restream this back live with just the English from the right side or just spanish from the left side, I tried looking everywhere but did not find any type of solution .

  Since this needs to be done live, I can't be using other programs to separate video and audio to get it done.

  This needs to be done through ffmpeg and I wonder if it even capable of doing so with original built or it would need some custom modification.