linux – Page 2 – 业余语言练习

java error package

error: end of path to source file does not match its package name car

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Categorized as java

网课专用:simplescreenrecorder+ffplay

simplescreenrecorder作用:录制屏幕+摄像头麦克风(主要原因,声音没有延迟。) Record audio->Backend(PulseAudio)->Source(2K USB Camera Mono) ffplay作用:调用本地摄像头,并显示在屏幕,鼠标可以拖动显示框移动。 ffplay -f v4l2 -i /dev/video2 -vf ‘setpts=(RTCTIME-RTCSTART)/(TB*1000000),hflip’

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Categorized as english

javac 类的构造方法

root135@root135:~/Downloads/java_0/类的构造方法/car/car$ tree . ├── bin └── src ├── Battery.java └── Car.java

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Categorized as python

javac java 封装、签名和重载

root135@root135:~/Downloads/java_0/car_1/car_1$ mkdir bin root135@root135:~/Downloads/java_0/car_1/car_1$ tree . ├── bin └── src ├── Battery.java └── Car.java 2 directories, 2 files

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Categorized as java

ffmpeg x11grab+mp3

ffmpeg -f x11grab -framerate 30 -video_size 938×523 \ -i :0.0+79,193 -vf “setpts=(RTCTIME-RTCSTART)/(TB*1000000),\ drawtext=fontfile=/usr/share/fonts/msyh.ttf:\ fontcolor=#FF0000:fontsize=30:x=25:y=20:\ text=’mofayingyu'” -strict -2 -t 00:15:00 -f mp4 20250711jd.mp4 \ -f pulse -i ‘bluez_sink.41_42_FF_28_DF_E0.a2dp_sink.monitor’ \ -vf ‘setpts=(RTCTIME-RTCSTART)/(TB*1000000)’ \ -t 00:15:00 -c:a mp3 -y && exit 这个代码实现了网页视频与音频同步,录制15分钟自动停止。可以长期使用!主要在于\ -vf ‘setpts=(RTCTIME-RTCSTART)/(TB*1000000)’ 测试效果可以,令我非常满意。

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Categorized as ffmpeg