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• Android FFMPEG build for arm64 failed with error ?

  26 août 2019, par bharat aghera

  I have made ffmpeg build with following build script.
  https://github.com/Free-Syj/ffmpeg-build-script/blob/master/build-android-ffmpeg.sh

  It worked for armv7.
  when I tried to make for arm64 architecture, it gave me following error.

  NDK/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64/bin/aarch64-linux-android-gcc is unable to create an executable file.

  Edited : -

  Following build script has been used to make the build.

  NDK=/Users/tapansodha/Documents/Softwares/AndroidStudio/adt-bundle-mac-x86_64-20140702/android-ndk-r10e
  
  function build_one
  
  {
  
  ./configure --target-os=linux \
  
  --prefix=$PREFIX \
  
  --enable-cross-compile \
  
  --extra-libs="-lgcc" \
  
  --arch=arm \
  
  --cc=$CC \
  
  --cross-prefix=$PREBUILT/bin/aarch64-linux-android- \
  
  --nm=$NM \
  
  --sysroot=$PLATFORM \
  
  --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
  
  --enable-shared \
  
  --disable-static \
  
  --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
  
  --disable-everything \
  
  --disable-debug \
  
  --disable-programs \
  
  --disable-doc \
  
  --enable-decoder=h264 \
  
  --enable-decoder=mjpeg \
  
  --enable-decoder=mpeg4 \
  
  --enable-decoder=mxpeg \
  
  --enable-decoder=aac \
  
  $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  make clean
  
  make  -j4 install
  
  }
  
  
  
  #arm arm64-v8a
  
  PLATFORM=$NDK/platforms/android-21/arch-arm64/
  
  PREBUILT=$NDK/toolchains/aarch64-linux-android-4.9/prebuilt/darwin-x86_64
  
  CC=$PREBUILT/bin/aarch64-linux-android-gcc
  
  NM=$PREBUILT/bin/aarch64-linux-android-nm
  
  CPU=arm64
  
  PREFIX=./android_arm64n/$CPU
  
  ADDITIONAL_CONFIGURE_FLAG=
  
  build_one

• Android : mp4 file plays when downloaded but when choosing "Video" player gets "Cannot play video"

  11 juillet 2019, par gview

  I’ve converted the video to an mp4 with ffmpeg using the h264 codec and AAC, and used the baseline profile.

  Videos are 540x360x250kbps

  I then ran qt-faststart on the file to move the atoms into the right order.

  I’ve stuck the file up on a wiki we use and created a link to it.

  My test phone is a Samsung Galaxy S3.

  When I browse to the page that has links to the mp4’s on it, and I click on them, I get a popup window with 2 options : Internet and Video.

  If I download the videos using the "Internet" option, I can play them on the phone without issue.

  I’ve done other encodings with the main profile as well, and these also play fine. I thought that a powerful phone like the s3 would be able to handle the more advanced compression schemes available in h264, however I’ve also browsed the Android docs in regards to supported video formats, and it seems to state that only the "baseline" compression profile is supported.

  Regardless, what doesn’t work is trying to use the "Video" option which I assume tries to stream the video.

  For the wiki in question, clicking on the link reveals that the content-type and content-length headers are being set :

  Content-Length  6175996
  
  Content-Type    video/mp4;charset=UTF-8

  Clicking on the link with a browser invokes a player (Quicktime in most cases) that can play the mp4’s.

  Is there more to having the file HTTP streamable beyond making a link to it ? Why won’t my Android 4 play these files ?

  UPDATE :
  I decided to make a quick HTML5 page using the video tag, and the videos do play on both my Galaxy S3 and the latest IOS.

• Android cannot play a video, but PC can [duplicate]

  6 juin 2018, par CoXier

  This question already has an answer here :

  • flvEncoder .flv output won’t convert to .mp4 with ffmpeg [duplicate]
    
    1 answer
    
  • FFPLAY shows video, but FFMPEG just shows black
    
    1 answer
    
  • FFmpeg converting image sequence to video results in blank video [closed]
    
    1 answer
    
  • ffmpeg file conversion unreadable [closed]
    
    1 answer
    

  I use ffmpeg to convert gif to mp4 on Android. And part of configuration is :

   --disable-encoders \
  
   --disable-decoders \
  
   --enable-small \
  
   --enable-encoder=libx264 \
  
   --enable-encoder=flv \
  
   --enable-encoder=opus \
  
   --enable-encoder=gif \
  
   --enable-decoder=h264 \
  
   --enable-decoder=flv \
  
   --enable-decoder=opus \
  
   --enable-decoder=gif \

  However I can not play the output mp4 on Android. But pc can play it.

  ffmpeg -i output.mp4

  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.12.100
  
    Duration: 00:00:09.73, start: 0.000000, bitrate: 330 kb/s
  
      Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv444p, 280x174, 328 kb/s, 11 fps, 11 tbr, 11264 tbn, 22 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler

  Is there anything wrong ?