qt获取设备名称并利用ffmpeg执行外部命令行实现录屏和录制摄像头

[{"title":"（ 32 个子文件 18MB ） qt获取设备名称并利用ffmpeg执行外部命令行实现录屏和录制摄像头","children":[{"title":"RecordImage","children":[{"title":"ffmpeg","children":[{"title":"ffmpeg.exe <span style='color:#111;'> 58.73MB </span>","children":null,"spread":false}],"spread":true},{"title":"ctlrecordimage.h <span style='color:#111;'> 3.72KB </span>","children":null,"spread":false},{"title":"screen_capture","children":[{"title":"screen-capture-recorder-x64.dll <span style='color:#111;'> 68.50KB </span>","children":null,"spread":false},{"title":"screen-capture-recorder.dll <span style='color:#111;'> 58.50KB </span>","children":null,"spread":false}],"spread":true},{"title":"testwidget.cpp <span style='color:#111;'> 5.71KB </span>","children":null,"spread":false},{"title":"RecordImage.pro <span style='color:#111;'> 499B </span>","children":null,"spread":false},{"title":"cmdthread.cpp <span style='color:#111;'> 569B </span>","children":null,"spread":false},{"title":"ctlrecordimage.cpp <span style='color:#111;'> 10.72KB </span>","children":null,"spread":false},{"title":"release","children":null,"spread":false},{"title":"debug","children":[{"title":"moc_cmdthread.cpp <span style='color:#111;'> 4.38KB </span>","children":null,"spread":false},{"title":"moc_testwidget.cpp <span style='color:#111;'> 5.59KB </span>","children":null,"spread":false},{"title":"widget.o <span style='color:#111;'> 385.84KB </span>","children":null,"spread":false},{"title":"main.o <span style='color:#111;'> 539.75KB </span>","children":null,"spread":false},{"title":"moc_cmdthread.o <span style='color:#111;'> 313.94KB </span>","children":null,"spread":false},{"title":"testwidget.o <span style='color:#111;'> 530.37KB </span>","children":null,"spread":false},{"title":"moc_widget.o <span style='color:#111;'> 358.93KB </span>","children":null,"spread":false},{"title":"moc_ctlrecordimage.o <span style='color:#111;'> 445.60KB </span>","children":null,"spread":false},{"title":"ctlrecordimage.o <span style='color:#111;'> 631.63KB </span>","children":null,"spread":false},{"title":"moc_ctlrecordimage.cpp <span style='color:#111;'> 2.71KB </span>","children":null,"spread":false},{"title":"cmdthread.o <span style='color:#111;'> 325.53KB </span>","children":null,"spread":false},{"title":"RecordImage.exe <span style='color:#111;'> 3.51MB </span>","children":null,"spread":false},{"title":"moc_testwidget.o <span style='color:#111;'> 467.22KB </span>","children":null,"spread":false},{"title":"moc_widget.cpp <span style='color:#111;'> 3.44KB </span>","children":null,"spread":false}],"spread":false},{"title":"testwidget.h <span style='color:#111;'> 1.40KB </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 407B </span>","children":null,"spread":false},{"title":".qmake.stash <span style='color:#111;'> 676B </span>","children":null,"spread":false},{"title":"Makefile <span style='color:#111;'> 22.85KB </span>","children":null,"spread":false},{"title":"cmdthread.h <span style='color:#111;'> 478B </span>","children":null,"spread":false},{"title":"widget.cpp <span style='color:#111;'> 2.59KB </span>","children":null,"spread":false},{"title":"Makefile.Debug <span style='color:#111;'> 85.84KB </span>","children":null,"spread":false},{"title":"widget.h <span style='color:#111;'> 543B </span>","children":null,"spread":false},{"title":"Makefile.Release <span style='color:#111;'> 85.99KB </span>","children":null,"spread":false},{"title":"RecordImage.pro.user <span style='color:#111;'> 23.21KB </span>","children":null,"spread":false}],"spread":false}],"spread":true}]