Newest 'ffmpeg' Questions - Stack Overflow
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Unknown encoder 'libfaac' ubuntu 12.04 and ruby on rails 3
5 novembre 2013, par hyperrjasI'm using carrierwave-video to upload video with my ruby on rails app. But I have this problem when try enconde the video:
Unknown encoder 'libfaac' Errors: no output file created.I have tried with:
sudo apt-get install libfaac-devbut I get the same error.
Updated:
After compile ffmpeg, I get the same error:
Metadata: major_brand : mp42 minor_version : 0 compatible_brands: mp42isomavc1 creation_time : 2011-10-13 18:54:50 encoder : HandBrake 0.9.5 2011010300 Duration: 00:06:43.28, start: 0.000000, bitrate: 380 kb/s Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x600 [SAR 1:1 DAR 8:5], 279 kb/s, 9.25 fps, 25 tbr, 90k tbn, 180k tbc Metadata: creation_time : 2011-10-13 18:54:50 handler_name : Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, mono, s16, 97 kb/s Metadata: creation_time : 2011-10-13 18:54:50 handler_name : Please use -q:a or -q:v, -qscale is ambiguous Unknown encoder 'libfaac' Errors: no output file created. -
FFMpeg build -lavdevice error on mac [on hold]
5 novembre 2013, par Ilya KharlamovI'm trying to build ffmpeg for kxmovie, but in the end I get the message here is:
Build settings from command line: ARCHS = armv7s SDKROOT = iphoneos7.0 SYMROOT = tmp/build === BUILD TARGET kxmovie OF PROJECT kxmovie WITH CONFIGURATION Release === Check dependencies Libtool tmp/build/Release-iphoneos/libkxmovie.a normal armv7s cd /Volumes/Files/Kharlamov/Desktop/kxtorrent/submodules/kxmovie setenv IPHONEOS_DEPLOYMENT_TARGET 7.0 setenv PATH "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin:/Applications/Xcode.app/Contents/Developer/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin" /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool -static -arch_only armv7s -syslibroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk -L/Volumes/Files/Kharlamov/Desktop/kxtorrent/submodules/kxmovie/tmp/build/Release-iphoneos -L/Volumes/Files/Kharlamov/Desktop/kxtorrent/submodules/kxmovie/libs -filelist /Volumes/Files/Kharlamov/Desktop/kxtorrent/submodules/kxmovie/tmp/build/kxmovie.build/Release-iphoneos/kxmovie.build/Objects-normal/armv7s/kxmovie.LinkFileList -ObjC -all_load -framework Foundation -framework CoreGraphics -lavcodec -lavdevice -lavformat -lavutil -lswresample -lswscale /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/usr/lib/libz.dylib -framework MediaPlayer -framework CoreAudio -framework AudioToolbox -framework Accelerate -framework QuartzCore -framework OpenGLES -o /Volumes/Files/Kharlamov/Desktop/kxtorrent/submodules/kxmovie/tmp/build/Release-iphoneos/libkxmovie.a /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: -dynamic not specified, -all_load invalid /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: -dynamic not specified the following flags are invalid: -ObjC /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: can't locate file for: -lavdevice /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: file: -lavdevice is not an object file (not allowed in a library) /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: file: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/usr/lib/libz.dylib is a dynamic library, not added to the static library /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: file: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/usr/lib/libz.dylib is a dynamic library, not added to the static library /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: file: /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk/usr/lib/libz.dylib is a dynamic library, not added to the static library Command /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool failed with exit code 1 ** BUILD FAILED ** The following build commands failed: Libtool tmp/build/Release-iphoneos/libkxmovie.a normal armv7s (1 failure) rake aborted! ******** Build failed ********Help please, what is the problem and how to fix it? P.S. I'm sorry for my english, I'm just learning :)
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ffmpeg unique frames only
5 novembre 2013, par WilliamI have a video sequence (MPEG1) of 30 fps that is decoded in two ways:
opencv_ffmpeg returns 30 images per second, but only 5 of them are unique, while all others are clones of the unique ones.
proprietary players (MediaPlayer) returns only the 5 unique frames and "holds" them for (1/5) sec each.
Is there a way to grab only the unique frames that the coder knows and not the total amount the ffmpeg decoder produces to fulfill the fps rate?
I'm developing a tracker and my tracker is forced to run 6 times slower and do many mistakes due to these "cloned frames".
Does anyone know any technical term to the problem? Unfortunately, ffmpeg is a black box for an opencv user and the documentation is sparse.
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how to play mp3 using ffmpeg
5 novembre 2013, par AriI'm trying to play audio mp3 file using ffmpeg in android but I'm facing a problem in the below mentioned code
how to play mp3 using ffmpeg
void JNICALL Java_com_music_MainActivity_loadFile(JNIEnv* env, jobject obj,jstring file,jbyteArray array) { jboolean isfilenameCopy; const char * filename = (*env)->GetStringUTFChars(env, file, &isfilenameCopy); 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; jclass cls = (*env)->GetObjectClass(env, obj); jmethodID play = (*env)->GetMethodID(env, cls, "playSound", "([BI)V");//At the begining of your main function av_init_packet(&avpkt); printf("Audio decoding\n"); __android_log_print(ANDROID_LOG_INFO, DEBUG_TAG, "inside load file"); /* find the mpeg audio decoder */ codec = avcodec_find_decoder(CODEC_ID_MP3); if (!codec) { fprintf(stderr, "codec not found\n"); exit(1); } c= avcodec_alloc_context(); /* open it */ if (avcodec_open(c, codec) < 0) { fprintf(stderr, "could not open codec\n"); exit(1); } __android_log_print(ANDROID_LOG_INFO, DEBUG_TAG, "open avcode"); outbuf = malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE); __android_log_print(ANDROID_LOG_INFO, DEBUG_TAG, "open %s",outbuf); f = fopen(filename, "rb"); if (!f) { fprintf(stderr, "could not open %s\n", filename); exit(1); } /* decode until eof */ avpkt.data = inbuf; avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f); __android_log_print(ANDROID_LOG_INFO, DEBUG_TAG, "data =%s and size %d",avpkt.data,avpkt.size); while (avpkt.size > 0) { out_size = AVCODEC_MAX_AUDIO_FRAME_SIZE; len = avcodec_decode_audio3(c, (short *)outbuf, &out_size, &avpkt); __android_log_print(ANDROID_LOG_INFO, DEBUG_TAG, "length =%d",len); if (len < 0) { fprintf(stderr, "Error while decoding\n"); __android_log_print(ANDROID_LOG_INFO, DEBUG_TAG, " failed length =%d",errno); exit(1); } if (out_size > 0) { /* if a frame has been decoded, output it */ jbyte *bytes = (*env)->GetByteArrayElements(env, array, NULL); memcpy(bytes, outbuf, out_size); // (*env)->ReleaseByteArrayElements(env, array, bytes, 0); (*env)->CallVoidMethod(env, obj, play, array, out_size); } avpkt.size -= len; avpkt.data += len; if (avpkt.size < 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 > 0) avpkt.size += len; } } fclose(f); free(outbuf); avcodec_close(c); av_free(c); }i am getting the len = - 1 in
len = avcodec_decode_audio3(c, (short *)outbuf, &out_size, &avpkt);what am i doing wrong??
please help
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compile FFmpeg error on windows when run ./configure
5 novembre 2013, par user1325717I want to use FFmpeg to decode mp3 and acc on android, I use android-ndk-r7 and the newest cygwin.
I wrote a shell config.sh, which content is:
TMPDIR=/cygdrive/c/temp PREBUILT=/cygdrive/c/android-ndk-r7/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows PLATFORM=/cygdrive/c/android-ndk-r7/platforms/android-8/arch-arm ./configure --target-os=linux --arch=arm --enable-version3 --enable-gpl --enable-nonfree --disable-stripping --disable-ffmpeg --disable-ffplay --disable-ffserver --disable-ffprobe --disable-encoders --disable-muxers --disable-devices --disable-protocols --enable-protocol=file --enable-avfilter --disable-network --disable-mpegaudio-hp --disable-avdevice --enable-cross-compile --cc=$PREBUILT/bin/arm-linux-androideabi-gcc --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- --nm=$PREBUILT/bin/arm-linux-androideabi-nm --extra-cflags="-fPIC -DANDROID" --disable-asm --enable-neon --enable-armv5te --extra-ldflags="-Wl,-T,$PREBUILT/arm-eabi/lib/ldscripts/armelf_linux_eabi.x -Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/crtbegin.o $PREBUILT/lib/gcc/arm-linux-androideabi/4.4.3/crtend.o -lc -lm -ldl"
I open cmd and do bash to open cygwin shell, then do ./config, the problem is appeared: "/cygdrive/c/android-ndk-r7/toolchains/arm-linux-androideabi-4.4.3/prebuilt/windows/bin/arm-linux-androideabi-gcc is unable to create an executable file..."
the config.log is:
check_ld check_cc BEGIN /cygdrive/c/temp/ffconf.SFJc3t92.c 1 int main(void){ return 0; } END /cygdrive/c/temp/ffconf.SFJc3t92.c gcc -fPIC -DANDROID -std=c99 -c -o /cygdrive/c/temp/ffconf.YKRv5TSp.o /cygdrive/c/temp/ffconf.SFJc3t92.c /cygdrive/c/temp/ffconf.SFJc3t92.c:1:0: warning: -fPIC ignored for target (all code is position independent) gcc -Wl,-rpath-link=/cygdrive/c/android-ndk-r7/platforms/android-4/arch-arm/usr/lib -L/cygdrive/c/android-ndk-r7/platforms/android-4/arch-arm/usr/lib -nostdlib /cygdrive/c/android-ndk-r7/platforms/android-4/arch-arm/usr/lib/crtbegin_static.o /cygdrive/c/android-ndk-r7/platforms/android-4/arch-arm/usr/lib/crtend_android.o -lc -lm -ldl -o /cygdrive/c/temp/ffconf.Yf1Ftjmo /cygdrive/c/temp/ffconf.YKRv5TSp.o /usr/lib/gcc/i686-pc-cygwin/4.5.3/../../../../i686-pc-cygwin/bin/ld: /cygdrive/c/android-ndk-r7/platforms/android-4/arch-arm/usr/lib/crtbegin_static.o: Relocations in generic ELF (EM: 40) /cygdrive/c/android-ndk-r7/platforms/android-4/arch-arm/usr/lib/crtbegin_static.o: could not read symbols: File in wrong format collect2: ld returned 1 exit status C compiler test failed.I don't know what is happened, is there someone who know what is happened, thanks.
