ffmpeg 截取清晰 jpg 图片 (VIDEO or RTSP)
1. 视频截取
ffmpeg -i "yongqiang.mp4" -y -r 0.5 -q:v 2 "yongqiang_20191212_%06d.jpg"
strong@foreverstrong:~/dev_temp/videos/foreverstrong$ ffmpeg -i "yongqiang.mp4" -y -r 0.5 -q:v 2 "yongqiang_20191212_%06d.jpg"
ffmpeg version 2.8.15-0ubuntu0.16.04.1 Copyright (c) 2000-2018 the FFmpeg developersbuilt with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencvlibavutil 54. 31.100 / 54. 31.100libavcodec 56. 60.100 / 56. 60.100libavformat 56. 40.101 / 56. 40.101libavdevice 56. 4.100 / 56. 4.100libavfilter 5. 40.101 / 5. 40.101libavresample 2. 1. 0 / 2. 1. 0libswscale 3. 1.101 / 3. 1.101libswresample 1. 2.101 / 1. 2.101libpostproc 53. 3.100 / 53. 3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'yongqiang.mp4':Metadata:major_brand : isomminor_version : 0compatible_brands: mp41avc1creation_time : 2019-12-02 08:19:36encoder : vlc 3.0.8 stream outputencoder-eng : vlc 3.0.8 stream outputDuration: 00:01:04.75, start: 0.160000, bitrate: 914 kb/sStream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 912 kb/s, 14.75 fps, 30 tbr, 90k tbn, 60 tbc (default)Metadata:creation_time : 2019-12-02 08:19:36handler_name : VideoHandler
[swscaler @ 0x1c7e560] deprecated pixel format used, make sure you did set range correctly
Output #0, image2, to 'yongqiang_20191212_%06d.jpg':Metadata:major_brand : isomminor_version : 0compatible_brands: mp41avc1encoder : Lavf56.40.101Stream #0:0(eng): Video: mjpeg, yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 0.50 fps, 0.50 tbn, 0.50 tbc (default)Metadata:creation_time : 2019-12-02 08:19:36handler_name : VideoHandlerencoder : Lavc56.60.100 mjpeg
Stream mapping:Stream #0:0 -> #0:0 (h264 (native) -> mjpeg (native))
Press [q] to stop, [?] for help
frame= 34 fps=3.3 q=2.0 Lsize=N/A time=00:01:08.00 bitrate=N/A dup=0 drop=921
video:11528kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
strong@foreverstrong:~/dev_temp/videos/foreverstrong$
2. RTSP 流截取
ffplay -i 'rtsp://username:password@IP:554/cam/realmonitor?channel=1&subtype=0'
ffmpeg -rtsp_transport tcp -hide_banner -i "rtsp://username:password@IP:554/cam/realmonitor?channel=1&subtype=0" -y -r 0.5 -t 2 -q:v 2 yongqiang_20191212_%06d.jpg
strong@foreverstrong:~/dev_temp/videos/foreverstrong$ ffmpeg -rtsp_transport tcp -hide_banner -i "rtsp://username:password@IP:554/cam/realmonitor?channel=1&subtype=0" -y -r 0.5 -t 2 -q:v 2 yongqiang_20191212_%06d.jpg
Input #0, rtsp, from 'rtsp://username:password@IP:554/cam/realmonitor?channel=1&subtype=0':Metadata:title : Media ServerDuration: N/A, start: 0.403333, bitrate: N/AStream #0:0: Video: h264 (Main), yuvj420p(pc, bt709), 1280x720 [SAR 1:1 DAR 16:9], 15 fps, 100 tbr, 90k tbn, 30 tbc
Output #0, image2, to 'yongqiang_20191212_%06d.jpg':Metadata:title : Media Serverencoder : Lavf56.40.101Stream #0:0: Video: mjpeg, yuvj420p(pc), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 0.50 fps, 0.50 tbn, 0.50 tbcMetadata: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=2.0 Lsize=N/A time=00:00:02.00 bitrate=N/A dup=0 drop=2
video:104kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
strong@foreverstrong:~/dev_temp/videos/foreverstrong$
References
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