ffmpeg实现scale

[{"title":"（ 235 个子文件 15.12MB ） ffmpeg实现scale","children":[{"title":"test_ffmpeg_filter-f1c50f45.ipch <span style='color:#111;'> 2.06MB </span>","children":null,"spread":false},{"title":"avutil-52.dll <span style='color:#111;'> 408.50KB </span>","children":null,"spread":false},{"title":"test.mp4 <span style='color:#111;'> 887.03KB </span>","children":null,"spread":false},{"title":"swresample-0.dll <span style='color:#111;'> 269.50KB </span>","children":null,"spread":false},{"title":"test_ffmpeg_filter.cpp <span style='color:#111;'> 11.91KB </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]