为av_read_frame设置超时 [英] Setting a timeout for av_read_frame

问题描述

我是FFMPEG的新手，正在尝试使用FFMPEG进行HLS流传输.当我尝试使用函数"av_read_frame"时，只要数据不可用，它将返回负值.是否有某种方法可以让此功能等到接收到一些数据或使该功能等到达到超时?

I am new to FFMPEG and was trying to do HLS streaming using FFMPEG. When i tried using the function "av_read_frame" it returns a negative value whenever data is not available. Is there some method to make this function wait till some data is received or to make this function wait till a timeout is reached?

推荐答案

不，实际上没有.如果您查看FFmpeg随附的简单播放器 ffplay.c ，则 read_thread 函数基本上在 av_read_frame 上循环，直到返回非负返回码.如果返回负值，则只需等待10毫秒然后重试.

No, there really isn't. If you look at the simple player ffplay.c which comes with FFmpeg, the read_thread function basically loops on av_read_frame until it returns a non-negative return code. If it returns a negative value, it simply waits for 10ms and retries.

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