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Building x264 on a Mac for android “No working C compiler found”
20 novembre 2015, par LostPuppyI am trying to build x264 and eventually use it to build ffmpeg the following is my script:
#!/bin/bash NDK="/Users/account/Documents/FFmpeg/android-ndk-r10e" TOOL_DIR_ARM="/Users/account/Documents/FFmpeg/android-ndk-r10e/sources/ffmpeg-2.8.2/my-android-toolchain" SYSROOT=$NDK/platforms/platforms/android-21/arch-arm echo "removing tool chain directory if it exists" rm -r $TOOL_DIR_ARM $NDK/build/tools/make-standalone-toolchain.sh \ --platform=android-21 \ --arch=arm \ --install-dir=$TOOL_DIR_ARM \ --toolchain=arm-linux-androideabi-clang3.6\ --llvm-version=3.6 \ --system=darwin-x86_64 if [ -d $SYSROOT ]; then echo "$SYSROOT is a valid directory" fi function build_x264 { cd x264 # another build for phone ./configure \ --cross-prefix=arm-linux-androideabi- \ --sysroot=$SYSROOT \ --host=arm-linux \ --enable-static \ --enable-pic \ --disable-cli make -j4 make install cd ../ } function build_one { cd # another build for phone ./configure \ --sysroot=$SYSROOT \ --target-os=linux \ --arch=arm \ --cross-prefix=$TOOL_DIR_ARM/bin/arm-linux-androideabi- \ --cc=$TOOL_DIR_ARM/bin/clang \ --enable-cross-compile \ --enable-encoder=mpeg4 \ --enable-pthreads \ --enable-gpl \ --enable-libx264 \ --enable-pic \ --extra-cflags='-I/usr/local/include' \ --extra-ldflags='-L/usr/local/lib' make clean make -j4 make install } echo "Building x_264 library" build_x264 echo "Building FFmpeg" build_oneI get an error saying
No working C compiler found. Makefile:3: config.mak: No such file or directoryThe following is the output from the config.log file
checking for -mdynamic-no-pic... yes checking for -arch x86_64... yes x264 configure script checking whether gcc works... yes checking whether gcc supports for( int i = 0; i < 9; i++ ); with -std=gnu99... yes checking for -mpreferred-stack-boundary=5... no Failed commandline was: -------------------------------------------------- gcc conftest.c -m64 -Qunused-arguments -Wall -I. -I$(SRCPATH) -mdynamic-no-pic -arch x86_64 -std=gnu99 -mpreferred-stack-boundary=5 -m64 -lm -arch x86_64$ clang: error: unknown argument: '-mpreferred-stack-boundary=5' -------------------------------------------------- Failed program was: -------------------------------------------------- int main (void) { return 0; } -------------------------------------------------- checking whether yasm supports vpmovzxwd ymm0, xmm0... yesSolutions that I tried:
I made sure I have a working GCC
I have the update to date version of clang
I have the update to date version of LLVM
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FFMPEG-jpg sequence to H.264 generate best result
18 octobre 2015, par ZikiI have a jpg sequence which I need to convert to mp4, and I need to get the best result.
As I understood, I need to supply the 'ffmpeg' cmdln the following: bitrate, minrate, maxrate and bufsize.
The only thing that I found about calculating the above params, is if I have the final output file size. But considering I want the best quality, I don't know the final output file size, and I don't care what it will be.
Of course I have the framerate and the total frames.
Here's my ffmpeg cmdln:
ffmpeg -r 24 -start_number 0 -i "C:\pathToSequence\%06d.jpg" -c copy -vframes 792 -threads 16 -pix_fmt yuv420p -c:v libx264 "C:\pathToOutput\result.mp4"The total size of the sequence is 128MB, 792 frames, 24 framerate, resolution 1280x720.
Until now I used to add the following to the ffmpeg cmdln:
-b:v 10000k -minrate 10000k -maxrate 10000k -bufsize 10000kAnd if it was 1080p:
-b:v 20000k -minrate 20000k -maxrate 20000k -bufsize 20000kAnd I figured that if I put the max value that ffmpeg can handle (2147480) it will generate almost the same result as the above. But I think it's a bad approach(correct me if I'm wrong).
So if I need to get the best result, how do I calculate it(or I can simply put the max value)?
Also I would like if you have another helpful flags to add to make the best final result.
--EDIT--
Here's the updated command:
O:\tools\ffmpeg -framerate 24 -start_number 0 -i "C:\share\localProcess\test\%05d.jpg" -vframes 54 -pix_fmt yuv420p -c:v libx264 -preset veryslow -qp 1 "C:\share\localProcess\result\result.mp4"And this is the ouptout:
ffmpeg version N-72383-g7206b94 Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.9.2 (GCC) configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib libavutil 54. 26.100 / 54. 26.100 libavcodec 56. 41.100 / 56. 41.100 libavformat 56. 33.101 / 56. 33.101 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 16.101 / 5. 16.101 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Input #0, image2, from 'C:\share\localProcess\test\%05d.jpg': Duration: 00:00:02.25, start: 0.000000, bitrate: N/A Stream #0:0: Video: mjpeg, yuvj444p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 24 fps, 24 tbr, 24 tbn, 24 tbc [swscaler @ 0000000004d6bf60] deprecated pixel format used, make sure you did set range correctly [libx264 @ 0000000004d7a9e0] using SAR=1/1 [libx264 @ 0000000004d7a9e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2 [libx264 @ 0000000004d7a9e0] profile High, level 5.0 [libx264 @ 0000000004d7a9e0] 264 - core 146 r2538 121396c - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=16 deblock=1:0:0 analyse=0x3:0x133 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=24 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=8 b_pyramid=2 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=24 scenecut=40 intra_refresh=0 rc=cqp mbtree=0 qp=1 ip_ratio=1.40 pb_ratio=1.30 aq=0 Output #0, mp4, to 'C:\share\localProcess\result\result.mp4': Metadata: encoder : Lavf56.33.101 Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=-1--1, 24 fps, 12288 tbn, 24 tbc Metadata: encoder : Lavc56.41.100 libx264 Stream mapping: Stream #0:0 -> #0:0 (mjpeg (native) -> h264 (libx264)) Press [q] to stop, [?] for help frame= 54 fps= 38 q=-1.0 Lsize= 542kB time=00:00:02.16 bitrate=2050.0kbits/s video:541kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.251171% [libx264 @ 0000000004d7a9e0] frame I:1 Avg QP: 0.00 size: 23629 [libx264 @ 0000000004d7a9e0] frame P:22 Avg QP: 1.00 size: 16146 [libx264 @ 0000000004d7a9e0] frame B:31 Avg QP: 2.81 size: 5623 [libx264 @ 0000000004d7a9e0] consecutive B-frames: 16.7% 29.6% 16.7% 0.0% 9.3% 0.0% 13.0% 14.8% 0.0% [libx264 @ 0000000004d7a9e0] mb I I16..4: 74.9% 20.2% 4.9% [libx264 @ 0000000004d7a9e0] mb P I16..4: 0.3% 0.1% 1.2% P16..4: 2.7% 0.4% 0.8% 0.2% 0.1% skip:94.2% [libx264 @ 0000000004d7a9e0] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 3.0% 0.4% 0.5% direct: 0.3% skip:95.7% L0:56.0% L1:40.5% BI: 3.5% [libx264 @ 0000000004d7a9e0] 8x8 transform intra:16.5% inter:18.4% [libx264 @ 0000000004d7a9e0] direct mvs spatial:54.8% temporal:45.2% [libx264 @ 0000000004d7a9e0] coded y,uvDC,uvAC intra: 33.9% 49.8% 49.5% inter: 1.3% 2.9% 2.9% [libx264 @ 0000000004d7a9e0] i16 v,h,dc,p: 79% 13% 4% 4% [libx264 @ 0000000004d7a9e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 12% 22% 48% 2% 4% 6% 3% 1% 2% [libx264 @ 0000000004d7a9e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 13% 43% 5% 6% 4% 5% 5% 6% [libx264 @ 0000000004d7a9e0] i8c dc,h,v,p: 78% 12% 7% 3% [libx264 @ 0000000004d7a9e0] Weighted P-Frames: Y:0.0% UV:0.0% [libx264 @ 0000000004d7a9e0] ref P L0: 65.7% 2.4% 8.9% 4.5% 2.3% 3.0% 2.8% 3.9% 3.5% 0.8% 0.3% 0.5% 0.3% 0.5% 0.2% 0.3% [libx264 @ 0000000004d7a9e0] ref B L0: 76.9% 12.0% 3.4% 0.7% 3.6% 0.5% 2.1% 0.4% 0.1% 0.0% 0.1% 0.0% 0.1% 0.1% [libx264 @ 0000000004d7a9e0] ref B L1: 98.2% 1.8% [libx264 @ 0000000004d7a9e0] kb/s:1966.80 -
Is there any good documentation of **x264** internals ?
18 octobre 2015, par firoozgI want a to study about x264 internals?
Is there any good resource about the algorithms and code structure?
Or at least a resource to study about the intra prediction algorithms used in x264.
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What does ' wpredp' parameter do in x264 (or FFmpeg) ?
9 octobre 2015, par AlexandrI don't understand what 'wpredp' do? I've tried to find the description of 'wpredp' parameter but without success. Can somebody explain what it do?
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Error on compilation of x264 on qnap
3 octobre 2015, par user2060812We are facing issues on compiling x264 on qnap.
We need to compile ffmpeg with x264 library, qnap packages have the built-in x264 0.66 library but ffmpeg-0.9.2 doesn't support too old version of x264 and produces the following error on compiling x264 from source.[/share/MD0_DATA/.qpkg/x264-snapshot-20130208-2245] # make gcc -Wshadow -O3 -ffast-math -m32 -Wall -I. -I. -march=i686 -mfpmath=sse -msse -std=gnu99 -I/opt/include -I/opt/include -fomit-frame-pointer -fno-tree-vectorize -c -o x264.o x264.c x264.c: In function 'help': x264.c:401: error: 'X264_VERSION' undeclared (first use in this function) x264.c:401: error: (Each undeclared identifier is reported only once x264.c:401: error: for each function it appears in.) make: *** [x264.o] Error 1 [/share/MD0_DATA/.qpkg/x264-snapshot-20130208-2245] # cat /proc/version Linux version 2.6.33.2 (root@NasX86-4) (gcc version 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2)) #1 SMP Wed Dec 5 06:48:23 CST 2012Can someone assist me on that ?
