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• Can't maintain desired fps with ffmpeg live stream when overlay is added

  1er avril 2019, par jawsware

  I’m attempting to produce a 4K live stream for YouTube.

  I’m capturing 2160p30 frames from a BlackMagic Design DeckLink Mini Recorder. I’m passing those frames to ffmpeg in their raw 8-bit 4:2:2 format. I’m able to achieve 30 fps encoding ( 16kbits/s and q= in the high 20s to low 30s) with my current parameters which are :

  ffmpeg -threads:v 2 -threads:a 8 -filter_threads 2
  
  -f rawvideo -framerate 30 -pixel_format uyvy422 -video_size 3840x2160 -i \\.\pipe\videopipe
  
  -f s16le -ac 2 -ar 44100 -i \\.\pipe\audiopipe
  
  -r 30 -g 60 -c:v h264_nvenc -pix_fmt yuv420p -preset fast -profile main
  
  -b:v 16000K -maxrate 24000k -bufsize 6000k
  
  -f flv "rtmp://a.rtmp.youtube.com/live2/xxxx-xxxx-xxxx-xxxx"

  I’m dilemma is that once I introduce an overlay graphic, my encoding fps drops to 28 at best. Which leads me to believe I’m barley achieving the 30 fps without the overlay. I’m only adding these parameters to include the overlay :

  -i logo.png
  
  
  
  -filter_complex "overlay=100:100"

  I further diminish the encoding fps (20 fps max) when I introduce a dynamic overlay which I feed to ffmpeg through an additional pipe.

  My questions are 1.) is there a better set a parameters I could be using to encode the 4K stream ? 2.) is there a better way to include the overlay ?

• Cannot play video in TextureView Android

  26 octobre 2014, par Billda

  I have a problem with playing video on some devices. I am using textureview with mediaplayer, every methods of SurfaceTextureView are called but when I just call mediaPlayer.start(), immediately the listener with completition of playing is called. In log is this error :

  E/MediaPlayer﹕ error (1, -2147483648)

  When I list log from all applications, I can see some errors and I dont know if it is somehow related http://pastebin.com/rRxxQgdJ

  This log is from CyanogenMod with Android 4.3.1 but on some other devices like Samsung Galaxy S3 mini this error is happening.

  On my Nexus 4 everything works fine. I’ve tried convert that video with mp4 codec for android H.264 and even with ffmpeg but the result is still the same. I am using TextureVideoView implementation from here :
  https://github.com/dmytrodanylyk/video-crop/blob/master/library/src/com/dd/crop/TextureVideoView.java

  Thanks for any advice

• ffmpeg for Android build shows error

  2 avril 2015, par Jamal

  I would like to build ffmpeg for Android so I am following a steps from this tutorial http://www.roman10.net/how-to-build-ffmpeg-with-ndk-r9/

  What I tried

  1. downloaded android-ndk-r10d-darwin-x86_64.bin for Mac 64 bit OS
  2. decompressed/extract the NDK archieve file
  3. downloaded ffmpeg 2.6.1
  4. decompressed/extract the `ffmpeg 2.6.1 file
  5. copied the ffmpeg 2.6.1 extracted folder and pasted into android-ndk-r10d/sources/ location

  6. Opened the ffmpeg-2.6.1/configure file and replaced this code

     SLIBNAME_WITH_MAJOR=’$(SLIBNAME).$(LIBMAJOR)’
     LIB_INSTALL_EXTRA_CMD=’$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"’
     SLIB_INSTALL_NAME=’$(SLIBNAME_WITH_VERSION)’
     SLIB_INSTALL_LINKS=’$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)’

  with

  SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
  
  LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
  
  SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
  
  SLIB_INSTALL_LINKS='$(SLIBNAME)'

  7.Created the build_android.shfile inside ffmpeg-2.6.1 folder so now it be like this ffmpeg-2.6.1/build_android.sh.
  instead of this NDK=$HOME/Desktop/adt/android-ndk-r9 line I set current NDK location
  8. executed this sudo chmod +x build_android.sh command

  9. while executing this command ./build_android.sh got below error

  Hubs-Mac-mini:ffmpeg-2.6.1 hubmaci7$ ./build_android.sh
  Configured with : —prefix=/Applications/Xcode.app/Contents/Developer/usr —with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1
  Configured with : —prefix=/Applications/Xcode.app/Contents/Developer/usr —with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/c++/4.2.1
  /hubmaci7/Pictures/Hubino/Jamal/android-ndk-r10d/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86_64/bin/arm-linux-androideabi-gcc is unable to create an executable file.
  C compiler test failed.

  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solve the problem.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Makefile:2: config.mak: No such file or directory
  
  Makefile:59: /common.mak: No such file or directory
  
  Makefile:100: /libavutil/Makefile: No such file or directory
  
  Makefile:100: /library.mak: No such file or directory
  
  Makefile:102: /doc/Makefile: No such file or directory
  
  Makefile:185: /tests/Makefile: No such file or directory
  
  make: *** No rule to make target `/tests/Makefile'.  Stop.
  
  Hubs-Mac-mini:ffmpeg-2.6.1 hubmaci7$ 

  please provide a needed solution for me to solve this errors