FFmpeg添加了对流行hevc编码器x265的支持极大的方便了编解码场景的融合应用。以下记录说明在windows下编译带libx265编码器的FFmpeg。
环境
Windows7 + VisualStudio2015
FFmpeg编译环境搭建
请参考我的博文Windows下编译FFmpeg
X265编译
请参考我的博文Windows下编译x265
libx265环境配置
由于FFmpeg的Configure是采用pkg-config来查找依赖库libs和头文件includes的，因此需要配置x265的pc文件让configure找到所依赖的环境。
启动msys.bat（编译FFmpeg搭建MinGW环境命令行），在/local/lib/pkgconfig文件夹下创建文件x265.pc
prefix=/local/
exec_prefix=${prefix}
libdir=${exec_prefix}/lib
includedir=${prefix}/include
Name: x265
Description: H.265/HEVC video encoder
Version: 2.8
Libs: -L${libdir} -lx265
Libs.private:
Cflags: -I${includedir}1. 配置依赖库libs
拷贝x265编译结果中的libx265.lib和x265-static.lib至/local/lib文件夹下。并复制libx265.lib为x265.lib
2. 配置头文件
拷贝x265.h和x265_config.h至/local/include文件夹下
3. 配置动态链接库
拷贝libx265.dll和x265.exe至/local/bin文件夹下
编译安装
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/local/lib/pkgconfig
执行pkg-config --list-all确保已经正确查找到x265
./configure --toolchain=msvc --enable-gpl --enable-libx265
make -j4
make install
使用测试
测试264 ts流转265 ts流， 采用默认参数
ffmpeg -i bq.ts -vcodec hevc h265.ts
打印如下：
x265 [info]: HEVC encoder version 2.8+21-gccd9e41ba
x265 [info]: build info [Windows][MSVC 1900][32 bit] 8bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX FMA3 B
MI2 AVX2
x265 [info]: Main profile, Level-3 (Main tier)
x265 [info]: Thread pool created using 4 threads
x265 [info]: Slices : 1
x265 [info]: frame threads / pool features : 2 / wpp(9 rows)
x265 [warning]: Source height < 720p; disabling lookahead-slices
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge : hex / 57 / 2 / 2
x265 [info]: Keyframe min / max / scenecut / bias: 25 / 250 / 40 / 5.00
x265 [info]: Lookahead / bframes / badapt : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb : 1 / 1 / 0
x265 [info]: References / ref-limit cu / depth : 3 / on / on
x265 [info]: AQ: mode / str / qg-size / cu-tree : 1 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 rskip signhide tmvp strong-intra-smoothing
x265 [info]: tools: deblock sao
Output #0, mpegts, to 'h265_2.ts':
Metadata:
encoder : Lavf58.17.100
Stream #0:0: Video: hevc (libx265), yuv420p, 528x576 [SAR 16:11 DAR 4:3], q=
2-31, 25 fps, 90k tbn, 25 tbc
Metadata:
encoder : Lavc58.20.102 libx265
Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
Metadata:
encoder : Lavc58.20.102 mp2
frame= 29 fps= 27 q=-0.0 size= 32kB time=00:00:01.35 bitrate= 191.6kbits/
frame= 32 fps= 17 q=-0.0 size= 51kB time=00:00:01.50 bitrate= 276.4kbits/
frame= 33 fps= 13 q=-0.0 size= 57kB time=00:00:01.50 bitrate= 309.4kbits/frame= 34 fps= 11 q=-0.0 size= 65kB time=00:00:01.52 bitrate= 349.9kbits/