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• Compile FFMpeg for Xcode 5 without GCC ?

  9 janvier 2014, par Joseph Toronto

  I'm trying to compile FFMpeg to add to my iOS app project in Xcode5, however since GCC is no longer included the ./configure script included with FFMpeg doesn't work. Unix/Linux is NOT my strong suit so I'm pretty much at a loss as to what to do next. I know I can install GCC manually, but if FFMpeg is compiled with GCC and the rest of my project is compiled with LLVC/Clang/whatever won't it cause problems. I did manage to install FFmpeg with Brew but I'm not sure what that even accomplished since it wasn't done using options flags like below :

  ./configure --prefix=armv7 --disable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --enable-avresample --enable-cross-compile --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk" --target-os=darwin --cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" --extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-min=6.1" --extra-ldflags="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk -miphoneos-version-min=6.1" --arch=arm --cpu=cortex-a9 --enable-pic

  None of the scripts/fixes I've tried work, even if they're advertised as working in IOS7/Xcode 5, because they all use GCC. What should I do ?

• AAC ffmpeg encoding iOS [closed]

  16 avril 2013, par HighFlyingFantasy

  So I have spent most of the day writing an FFMPEG client for iOS, and I ran into a problem when trying to convert my hardware encoded h.264/aac mov file to h.264/aac flv. I borrowed the muxing.c example code and converted it to modern objective-c. I'm having problems with the aac encoder, which says...

  

  I would like to know if it's possible to either add the -strict -2 command at runtime, or compile the library with experimental encoders enabled ?
  Also, my library seems to be missing some encoders (i only tried speex and mp3). I compiled them with :

  ./configure \
  
  --prefix=armv7 \
  
  --disable-ffmpeg \
  
  --disable-ffplay \
  
  --disable-ffprobe \
  
  --disable-ffserver \
  
  --enable-avresample \
  
  --enable-cross-compile \
  
  --sysroot="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk" \
  
  --target-os=darwin \
  
  --cc="/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc" \
  
  --extra-cflags="-arch armv7 -mfpu=neon -miphoneos-version-min=6.1" \
  
  --extra-ldflags="-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS6.1.sdk -miphoneos-version-min=6.1" \
  
  --arch=arm \
  
  --cpu=cortex-a9 \
  
  --enable-pic 

  and other variations, depending on the architecture. If someone can offer insight to either of my problems, it would be greatly appreciated !

• Couldn't open file with iFrameExtractor

  21 octobre 2012, par why

  I has built ffmpeg and iFrameExtractor with ios5.1 successful, But when I play the video, the log shows "Couldn't open file"

  // Register all formats and codecs
  
      avcodec_register_all();
  
      av_register_all();
  
  
  
      // Open video file
  
      if(avformat_open_input(&pFormatCtx, [moviePath cStringUsingEncoding:NSASCIIStringEncoding], NULL, NULL) != 0) {
  
          av_log(NULL, AV_LOG_ERROR, "Couldn't open file\n");
  
          goto initError;
  
      }

  This is my configure file for ffmpeg 0.11.1 :

  #!/bin/tcsh -f
  
  
  
  rm -rf compiled/*
  
  
  
  ./configure \
  
  --cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc \
  
  --as='/usr/local/bin/gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc' \
  
  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk \
  
  --target-os=darwin \
  
  --arch=arm \
  
  --cpu=cortex-a8 \
  
  --extra-cflags='-arch armv7' \
  
  --extra-ldflags='-arch armv7 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk' \
  
  --prefix=compiled/armv7 \
  
  --enable-cross-compile \
  
  --enable-nonfree \
  
  --disable-armv5te \
  
  --disable-swscale-alpha \
  
  --disable-doc \
  
  --disable-ffmpeg \
  
  --disable-ffplay \
  
  --disable-ffprobe \
  
  --disable-ffserver \
  
  --enable-decoder=h264 \
  
  --enable-decoder=svq3 \
  
  --disable-asm \
  
  --disable-bzlib \
  
  --disable-gpl \
  
  --disable-shared \
  
  --enable-static \
  
  --disable-mmx \
  
  --disable-neon \
  
  --disable-decoders \
  
  --disable-muxers \
  
  --disable-demuxers \
  
  --disable-devices \
  
  --disable-parsers \
  
  --disable-encoders \
  
  --enable-protocols \
  
  --disable-filters \
  
  --disable-bsfs \
  
  --disable-postproc \
  
  --disable-debug