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MAC M1系统编译ffmpeg-gl-transition

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MAC M1系统编译ffmpeg-gl-transition

    • 1. 本人系统
    • 2. 编译💰系统准备
      • 2.1. 下载【ffmpeg-gl-transition】到用户家目录下，并解压
      • 2.2 下载ffmpeg源码
      • 2.3. brew安装GLEW + glfw3
      • 2.4 复制vf_gltransition.c文件到ffmpeg
      • 2.5 修改ffmpeg源码文件
      • 2.6 设置库目录和头文件目录
    • 3. configure & make
    • 4. 结果验证
      • 4.1 使用方法

参考文档：
【gl-transitions配置】原项目dockerfile修改，为视频添加转场效果
【gitee】 ffmpeg-gl-transition

1. 本人系统

MAC M1系统编译ffmpeg-gl-transition插图

2. 编译💰系统准备

2.1. 下载【ffmpeg-gl-transition】到用户家目录下，并解压

(base)  ~/ffmpeg-gl-transition/ ll
total 88
-rw-rw-r--@ 1 admin  staff   2.8K  9  6  2019 Dockerfile
-rw-rw-r--@ 1 admin  staff   9.2K  9  6  2019 README.md
-rw-rw-r--@ 1 admin  staff   851B  9  6  2019 concat.sh
-rw-rw-r--@ 1 admin  staff   164B  9  6  2019 crosswarp.glsl
-rw-rw-r--@ 1 admin  staff   1.0K  9  6  2019 ffmpeg.diff
drwxrwxr-x@ 7 admin  staff   224B  9  6  2019 media
-rw-rw-r--@ 1 admin  staff    15K  9  6  2019 vf_gltransition.c

MAC M1系统编译ffmpeg-gl-transition插图(1)

2.2 下载ffmpeg源码

我看网上都是说的ffmpeg-4.2.2。因此我也是下载的ffmpeg-4.2.2

wget http://www.ffmpeg.org/releases/ffmpeg-4.2.2.tar.gz
tar -zxvf ffmpeg-4.2.2.tar.gz
cd ffmpeg-4.2.2

# get ffmpeg sources
(base)  ~/software/ffepeg/ wget http://www.ffmpeg.org/releases/ffmpeg-4.2.2.tar.gz
(base)  ~/software/ffepeg/ tar -zxvf ffmpeg-4.2.2.tar.gz
(base)  ~/software/ffepeg/ ll
total 26752
drwx------  45 admin  staff   1.4K  6 14 20:44 ffmpeg-4.2.2
-rw-r--r--   1 admin  staff    13M  1  1  2020 ffmpeg-4.2.2.tar.gz
(base)  ~/software/ffepeg/ 
(base)  ~/software/ffepeg/ cd ffmpeg-4.2.2
(base)  ~/software/ffepeg/ffmpeg-4.2.2/

2.3. brew安装GLEW + glfw3

(base)  ~/software/ffepeg/ brew install glew glfw
(base)  ~/software/ffepeg/ 
(base)  ~/software/ffepeg/ brew list glew                                
/opt/homebrew/Cellar/glew/2.2.0_1/bin/glewinfo
/opt/homebrew/Cellar/glew/2.2.0_1/bin/visualinfo
/opt/homebrew/Cellar/glew/2.2.0_1/include/GL/ (3 files)
/opt/homebrew/Cellar/glew/2.2.0_1/lib/libGLEW.2.2.0.dylib
/opt/homebrew/Cellar/glew/2.2.0_1/lib/cmake/ (4 files)
/opt/homebrew/Cellar/glew/2.2.0_1/lib/pkgconfig/glew.pc
/opt/homebrew/Cellar/glew/2.2.0_1/lib/ (3 other files)
/opt/homebrew/Cellar/glew/2.2.0_1/sbom.spdx.json
/opt/homebrew/Cellar/glew/2.2.0_1/share/doc/ (20 files)
(base)  ~/software/ffepeg/ 
(base)  ~/software/ffepeg/ brew list glfw
/opt/homebrew/Cellar/glfw/3.4/include/GLFW/ (2 files)
/opt/homebrew/Cellar/glfw/3.4/lib/libglfw.3.4.dylib
/opt/homebrew/Cellar/glfw/3.4/lib/cmake/ (4 files)
/opt/homebrew/Cellar/glfw/3.4/lib/pkgconfig/glfw3.pc
/opt/homebrew/Cellar/glfw/3.4/lib/ (3 other files)
/opt/homebrew/Cellar/glfw/3.4/sbom.spdx.json
/opt/homebrew/Cellar/glfw/3.4/share/doc/ (204 files)

2.4 复制vf_gltransition.c文件到ffmpeg

(base)  ~/software/ffepeg/ffmpeg-4.2.2/ cp ~/ffmpeg-gl-transition/vf_gltransition.c libavfilter/

2.5 修改ffmpeg源码文件

  1. 修改点
    通过cat ~/ffmpeg-gl-transition/ffmpeg.diff我们可以看到有两个文件要改。
    libavfilter/Makefile
    libavfilter/allfilters.c
    这个我就不说了，git大家应该都熟悉。
(base)  ~/ffmpeg-gl-transition/ cat ffmpeg.diff 
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index a90ca30ad7..c0fc73be46 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -367,6 +367,7 @@ OBJS-$(CONFIG_YADIF_FILTER)                  += vf_yadif.o
 OBJS-$(CONFIG_ZMQ_FILTER)                    += f_zmq.o
 OBJS-$(CONFIG_ZOOMPAN_FILTER)                += vf_zoompan.o
 OBJS-$(CONFIG_ZSCALE_FILTER)                 += vf_zscale.o
+OBJS-$(CONFIG_GLTRANSITION_FILTER)           += vf_gltransition.o
 
 OBJS-$(CONFIG_ALLRGB_FILTER)                 += vsrc_testsrc.o
 OBJS-$(CONFIG_ALLYUV_FILTER)                 += vsrc_testsrc.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 6eac828616..0570c1c2aa 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -357,6 +357,7 @@ extern AVFilter ff_vf_yadif;
 extern AVFilter ff_vf_zmq;
 extern AVFilter ff_vf_zoompan;
 extern AVFilter ff_vf_zscale;
+extern AVFilter ff_vf_gltransition;
 
 extern AVFilter ff_vsrc_allrgb;
 extern AVFilter ff_vsrc_allyuv;
(base)  ~/ffmpeg-gl-transition/

2.6 设置库目录和头文件目录

export CPATH=/opt/homebrew/include
export LIBRARY_PATH=/opt/homebrew/lib

3. configure & make

./configure --enable-libx264 --enable-gpl --enable-opengl \
            --enable-filter=gltransition --extra-libs='-lGLEW -lglfw'
make

不指定库目录，configure会抛错ffmpeg gcc is unable to create an executable file C compiler test failed。如下。其实从ffbuild/config.log文件可以看到是无法连接到GLEW

gcc is unable to create an executable file.
If gcc is a cross-compiler, use the --enable-cross-compile option.
Only do this if you know what cross compiling means.
C compiler test failed.

If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file “ffbuild/config.log” produced by configure as this will help
solve the problem.

不指定头文件目录，make会抛错fatal error: 'GLFW/glfw3.h' file not found
MAC M1系统编译ffmpeg-gl-transition插图(2)

4. 结果验证

make没有异常后，可以看到只有二进制文件生成的。
MAC M1系统编译ffmpeg-gl-transition插图(3)
./ffmpeg -v 0 -filters | grep gltransition

(base)  ~/software/ffepeg/ffmpeg-4.2.2/ ./ffmpeg -v 0 -filters | grep gltransition
 T.. gltransition      VV->V      OpenGL blend transitions
(base)  ~/software/ffepeg/ffmpeg-4.2.2/ 
(base)  ~/software/ffepeg/ffmpeg-4.2.2/ 
(base)  ~/software/ffepeg/ffmpeg-4.2.2/ 
(base)  ~/software/ffepeg/ffmpeg-4.2.2/ cp -r ~/ffmpeg-gl-transition ./
(base)  ~/software/ffepeg/ffmpeg-4.2.2/ ll
...
drwxr-xr-x    18 admin  staff   576B  1  1  2020 compat
-rw-r--r--     1 admin  staff    77K  6 14 20:22 config.h
-rwxr-xr-x     1 admin  staff   246K  1  1  2020 configure
drwxr-xr-x   149 admin  staff   4.7K  6 14 20:40 doc
drwxr-xr-x    13 admin  staff   416B  6 14 20:22 ffbuild
-rwxr-xr-x     1 admin  staff    17M  6 14 20:40 ffmpeg
drwxr-xr-x@   10 admin  staff   320B  6 14 20:42 ffmpeg-gl-transition
-rwxr-xr-x     1 admin  staff    20M  6 14 20:40 ffmpeg_g
-rwxr-xr-x     1 admin  staff    17M  6 14 20:40 ffprobe
-rwxr-xr-x     1 admin  staff    20M  6 14 20:40 ffprobe_g
drwxr-xr-x    29 admin  staff   928B  6 14 20:40 fftools
drwxr-xr-x  3152 admin  staff    99K  6 14 20:40 libavcodec
...

4.1 使用方法

  1. 默认选项：
    ./ffmpeg -i ffmpeg-gl-transition/media/0.mp4 -i ffmpeg-gl-transition/media/1.mp4 -filter_complex gltransition -y out.mp4
(base)  ~/software/ffepeg/ffmpeg-4.2.2/ ./ffmpeg -i ffmpeg-gl-transition/media/0.mp4 -i ffmpeg-gl-transition/media/1.mp4 -filter_complex gltransition -y out.mp4
ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple clang version 13.0.0 (clang-1300.0.29.30)
  configuration: --enable-libx264 --enable-gpl --enable-opengl --enable-filter=gltransition --extra-libs='-lglew -lglfw'
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
...
  1. 自定义选项：

./ffmpeg -i media/0.mp4 -i media/1.mp4 -filter_complex "gltransition=duration=4:offset=1.5:source=crosswarp.glsl" -y out.mp4

MAC M1系统编译ffmpeg-gl-transition插图(4)

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