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    <p>You need to cross Compile FFMPEG for android support. create <code>jni</code> folder inside your project and put <code>FFMPEG</code> folder inside jni. setup <code>android NDK</code>. </p> <p>Here is a copy of Config.sh which i have used to cross compile ffmpeg for android.</p> <pre><code>Config.sh #!/bin/sh PLATFORM=/home/nishant/Desktop/android/android-ndk-r5b/platforms/android-8/arch-arm PREBUILT=/home/nishant/Desktop/android/android-ndk-r5b/toolchains/arm-eabi-4.4.0/prebuilt/linux-x86 LIBX264=/home/nishant/Desktop/android/workspace/DemoProject/jni/x264 LIB=/home/nishant/Desktop/android/workspace/DemoProject/jni EXTRA_LIBS="-lgcc -lm -ldl -lz -lc" #EXTRA_EXE_LDFLAGS="$PLATFORM/usr/lib/crtbegin_dynamic.o $PLATFORM/usr/lib/crtend_android.o" ./configure --target-os=linux \ --arch=arm \ --enable-version3 \ --enable-gpl \ --enable-nonfree \ --disable-stripping \ --disable-ffmpeg \ --disable-ffplay \ --disable-ffserver \ --disable-ffprobe \ --enable-encoders \ --enable-libfaac \ --disable-muxers \ --disable-devices \ --disable-protocols \ --enable-protocol=file \ --enable-avfilter \ --disable-network \ --disable-mpegaudio-hp \ --disable-avdevice \ --enable-cross-compile \ --cc=$PREBUILT/bin/arm-eabi-gcc \ --nm=$PREBUILT/bin/arm-eabi-nm \ --prefix=/home/nishant/Desktop/android/workspace/DemoProject/jni \ --cross-prefix=$PREBUILT/bin/arm-eabi- \ --enable-postproc \ --extra-libs="$EXTRA_LIBS" \ --extra-cflags="-I$PLATFORM/usr/include/ -I$LIB/include/ -I/home/admin1/x264 -std=gnu99 -fPIC -DANDROID -fpic -mthumb-interwork -ffunction-sections -funwind-tables -fstack-protector -fno-short-enums -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ -Wno-psabi -march=armv5te -mtune=xscale -msoft-float -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing -finline-limit=64 -DANDROID -Wa,--noexecstack -MMD -MP" \ --disable-asm \ --enable-neon \ --enable-armv5te \ --enable-static \ --disable-shared \ --extra-ldflags="-Wl,-rpath-link=$LIB/lib -L$LIB/lib -nostdlib -Bdynamic -Wl,--no-undefined -Wl,-z,noexecstack -Wl,-z,nocopyreloc -Wl,-soname,/system/lib/libz.so -Wl,-rpath-link=$PLATFORM/usr/lib,-dynamic-linker=/system/bin/linker -L/usr/lib -L$PLATFORM/usr/lib -nostdlib $PLATFORM/usr/lib/crtbegin_dynamic.o $PLATFORM/usr/lib/crtend_android.o" </code></pre> <p>You can use this Config file to cross compile ffmpeg with some modifications in it.</p> <p>Compile <code>config.sh</code> using the <code>ndk-build</code> command. </p> <p>EDIT :</p> <p>FFMPEG is Bundled with all Audio Encoders and Decoders. For AAC Encoding and Decoding use <code>libfaac</code> and <code>libfaad</code>. You can find Audio Decoding example in <code>libavcodecs</code> <code>api-example.c</code> file. You need to create a <code>JNI Wrapper Class</code> to manipulate the codecs. One of the decoding example from that file i am posting here.</p> <pre><code>static void audio_decode_example(const char *outfilename, const char *filename) { AVCodec *codec; AVCodecContext *c= NULL; int out_size, len; FILE *f, *outfile; uint8_t *outbuf; uint8_t inbuf[AUDIO_INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE]; AVPacket avpkt; av_init_packet(&amp;avpkt); printf("Audio decoding\n"); /* find the mpeg audio decoder */ codec = avcodec_find_decoder(CODEC_ID_MP2); if (!codec) { fprintf(stderr, "codec not found\n"); exit(1); } c= avcodec_alloc_context(); /* open it */ if (avcodec_open(c, codec) &lt; 0) { fprintf(stderr, "could not open codec\n"); exit(1); } outbuf = malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE); f = fopen(filename, "rb"); if (!f) { fprintf(stderr, "could not open %s\n", filename); exit(1); } outfile = fopen(outfilename, "wb"); if (!outfile) { av_free(c); exit(1); } /* decode until eof */ avpkt.data = inbuf; avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f); while (avpkt.size &gt; 0) { out_size = AVCODEC_MAX_AUDIO_FRAME_SIZE; len = avcodec_decode_audio3(c, (short *)outbuf, &amp;out_size, &amp;avpkt); if (len &lt; 0) { fprintf(stderr, "Error while decoding\n"); exit(1); } if (out_size &gt; 0) { /* if a frame has been decoded, output it */ fwrite(outbuf, 1, out_size, outfile); } avpkt.size -= len; avpkt.data += len; if (avpkt.size &lt; AUDIO_REFILL_THRESH) { /* Refill the input buffer, to avoid trying to decode * incomplete frames. Instead of this, one could also use * a parser, or use a proper container format through * libavformat. */ memmove(inbuf, avpkt.data, avpkt.size); avpkt.data = inbuf; len = fread(avpkt.data + avpkt.size, 1, AUDIO_INBUF_SIZE - avpkt.size, f); if (len &gt; 0) avpkt.size += len; } } fclose(outfile); fclose(f); free(outbuf); avcodec_close(c); av_free(c); } </code></pre> <p>Hope it will help you.</p>
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    1. POHow to build + include FFMPEG into an existing Android project
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    1. COThanks, once the FFMPEG lib has been built into the folder, where do I go from there? I think I understand that I have to create some sort of wrapper around the native functions. Where do I find the functions that I need? What do I do after this? Cheers
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    2. COi have edited my answer.
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