ffmpeg -progress读取进度

- 使用文件存储进度
实例命令:ffmpeg -i video.mp4 -progress t.txt v.mpeg
进度文本的内容节选:
frame=98
fps=0.00
stream_0_0_q=31.0
bitrate=4915.2kbits/s
total_size=2359296
out_time_us=3840000
out_time_ms=3840000
out_time=00:00:03.840000
dup_frames=0
drop_frames=0
speed=7.63x
progress=continue
frame=1590
fps=211.06
stream_0_0_q=31.0
bitrate=4819.0kbits/s
total_size=38286977
out_time_us=63560000
out_time_ms=63560000
out_time=00:01:03.560000
dup_frames=0
drop_frames=0
speed=8.44x
progress=end

- 使用接口读取进度
实例命令:ffmpeg -i video.mp4 -progress 127.0.0.1/process v.mpeg
java接口:

@RestController
@RequestMapping()
public class TestController {

    @PostMapping("progress")
    public void t1(HttpServletRequest request) {
        try (BufferedReader br1 = new BufferedReader(new InputStreamReader(request.getInputStream()))) {
            String line;
            while ((line = br1.readLine()) != null) {
                System.out.println(line);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

输出的line节选:
frame=88
fps=0.00
stream_0_0_q=31.0
bitrate=5486.7kbits/s
total_size=2359296
out_time_us=3440000
out_time_ms=3440000
out_time=00:00:03.440000
dup_frames=0
drop_frames=0
speed=6.85x
progress=continue
frame=1590
fps=196.65
stream_0_0_q=31.0
bitrate=4819.0kbits/s
total_size=38286977
out_time_us=63560000
out_time_ms=63560000
out_time=00:01:03.560000
dup_frames=0
drop_frames=0
speed=7.86x
progress=end