ffmpeg安装、转码及截图

利用yum安装ffmpeg,

然后将一个视频文件传到虚拟机中指定目录

 #视频截图命令：ffmpeg -i      dbfcf33026b99b098e08dda2ae9f1af6.mp4 -y -r 1 -t 1 test1.jpg   

#视频截图      命令 输入文件地址（文件名）文件名   覆盖文件而不询问  设置帧率为1   当用作输入选项（之前-i）时，限制从输入文件中读取的数据的持续时间       截图后的文件名

 

[root@localhost 视频]# ffmpeg -i dbfcf33026b99b098e08dda2ae9f1af6.mp4 -y -r 1 -t 1 test1.jpg    #视频截图

ffmpeg version 2.8.15 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-36)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-gnutls --enable-ladspa --enable-libass --enable-libcdio --enable-libdc1394 --enable-libfdk-aac --enable-nonfree --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dbfcf33026b99b098e08dda2ae9f1af6.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : www.aliyun.com - Media Transcoding
Duration: 00:00:08.09, start: 0.092880, bitrate: 1024 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 480x270 [SAR 1:1 DAR 16:9], 966 kb/s, 16 fps, 16 tbr, 16384 tbn, 32 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 64 kb/s (default)
Metadata:
handler_name : SoundHandler
[swscaler @ 0x14ad420] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to 'test1.jpg':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Stream #0:0(und): Video: mjpeg, yuvj420p(pc), 480x270 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 1 fps, 1 tbn, 1 tbc (default)
Metadata:
handler_name : VideoHandler
encoder : Lavc56.60.100 mjpeg
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
Press [q] to stop, [?] for help
frame= 1 fps=0.0 q=2.7 Lsize=N/A time=00:00:01.00 bitrate=N/A
video:10kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[root@localhost 视频]# ls
dbfcf33026b99b098e08dda2ae9f1af6.mp4 （文件名 ）    test1.jpg （所截图片名）

将MP4转化成m3u8文件，命令分解如下

ffmpeg -i dbfcf33026b99b098e08dda2ae9f1af6.mp4 -c copy -bsf h264_mp4toannexb -map 0 -f segment -segment_list test.m3u8 -segment_time 10 test%03d.ts 

命令        选择一个编码器（当在输出文件之前使用）或解码器（当在输入文件之前使用时）用于一个或多个流    复制    生成的文件                生成一个test000.ts文件

[root@localhost 视频]# ffmpeg -i dbfcf33026b99b098e08dda2ae9f1af6.mp4 -c copy -bsf h264_mp4toannexb -map 0 -f segment -segment_list test.m3u8 -segment_time 10 test%03d.ts      #将MP4文件转换为m3u8文件
ffmpeg version 2.8.15 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-36)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --extra-ldflags='-Wl,-z,relro ' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --disable-crystalhd --enable-gnutls --enable-ladspa --enable-libass --enable-libcdio --enable-libdc1394 --enable-libfdk-aac --enable-nonfree --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'dbfcf33026b99b098e08dda2ae9f1af6.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : www.aliyun.com - Media Transcoding
Duration: 00:00:08.09, start: 0.092880, bitrate: 1024 kb/s
Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 480x270 [SAR 1:1 DAR 16:9], 966 kb/s, 16 fps, 16 tbr, 16384 tbn, 32 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 64 kb/s (default)
Metadata:
handler_name : SoundHandler
[segment @ 0x16bc8a0] Codec for stream 0 does not use global headers but container format requires global headers
[segment @ 0x16bc8a0] Codec for stream 1 does not use global headers but container format requires global headers
Output #0, segment, to 'test%03d.ts':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 480x270 [SAR 1:1 DAR 16:9], q=2-31, 966 kb/s, 16 fps, 16 tbr, 90k tbn, 16 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 22050 Hz, mono, 64 kb/s (default)
Metadata:
handler_name : SoundHandler
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame= 128 fps=0.0 q=-1.0 Lsize=N/A time=00:00:08.12 bitrate=N/A
video:944kB audio:63kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[root@localhost 视频]# ls
dbfcf33026b99b098e08dda2ae9f1af6.mp4    test000.ts（自动生成的文件）     test1.jpg     test.m3u8（转换成的文件）
[root@localhost 视频]# echo $?
0

 将MP4文件转化为m3u8 文件，会自动生成*.ts 文件