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• Can't use ffmpeg 3.2 in Android project

  21 novembre 2016, par world2ashish

  Tried almost everything, spent almost 4-5 days trying and still counting.

  The reason I want to compile recent version of ffmpeg is because https://github.com/WritingMinds/ffmpeg-android-java doesn’t work for video rotation. For this also I tried multiple answers, different versions of answer (transpose=1, transpose=dir=cclock, etc)

  Somewhere it was mentioned that rotate command wont work with previous versions of ffmpeg, so after a lot of trials, I started working on compilation of new ffmpeg. But all the tutorials for ffmpeg belong to earlier versions (of Android NDk, ffmpeg) which wont work with ffmpeg 3.2 and NDK r13b (I also tried with NDK downloaded by studio itself but no luck). In case it worked for you, please help.

  After a lot of frustrating experience I am writing this. Please help with a workflow or a clear direction. Thanks

  Wasnt able to tag ffmpeg3.2 because of reputation.

• Compiling ffmpeg for android using cygwin-x86

  11 mai 2015, par VEP10

  I’d like to test ijkplayer (android) project.
  During compiling ffmpeg libs (./compile-ffmpeg.sh) usin Cygwin in WIN7 environment I faced the following error message :

  "build on CYGWIN_NT-6.1 x86_64
  Host system ’cygwin-x86’ is not supported by the source NDK !
  Try —system= with one of : windows-x86_64"

  The suggested ’system’ command doesn’t solve the problem.
  Axtually I use android-ndk-r10c

  If I try the same process using MINGW32 I get a lot of syntax error.
  Please help !

• FFmpeg mp4 encoder for android html

  24 mai 2017, par Dell Watson

  Hello I’m trying to put video .mp4 auto-captured by my webcam using ffmpeg into HTML, and then activated my localhost so my android could see it.

  the video in my android WAS ABLE to play BUT it’s all white and pixels error, so it’s a fail.

  I thought because android has difference surface because in my desktop it runs perfectly, then i keep searching and trying with ogv/webm.

  In the end, I just use a downloaded mp4 and it runs perfectly tho.
  now I think the problem was coming from my mp4-webcam created by ffmpeg(run in cmd)

  I compare a mp4-webcam vs mp4-downloaded

  5sec vs 1min,

  Data-rate : 16477kbps vs 613kbps

  framerate : 30frm/s vs 23frm/s

  size : 9MB vs 5 MB

  even tho it’s only 5sec video by webcam, it still has larger data than a 1min video-downloaded maybe it was because without conversion.

  but the question, is that the reason of the problem ? android-html(google chrome) wasn’t able to display and make a dead pixels since in desktop it runs. it shouldn’t be the problem right ?

  I really need to transfer webcam-record into android-surface (my web-app).

  I have no idea to fix it, any advice ? I’ve been searching a lot. Maybe there was another problem I do not know yet.

  EDIT : my cmd ffmpeg run : ffmpeg -y -f v4l2 -i /dev/video1 -codec:v libx264 -qp 0 -t 0:00:05 hss.mp4

  EDIT 2 : my 2nd thought because ffmpeg encoder that I used(libx264) isnot support for android. but i still no idea