从不断变化的静态图片网址生成带有ffmpeg的电影? [英] Generate a movie with ffmpeg from a changing still image url?

问题描述

我需要从指向图像的HTTP url创建带有ffmpeg的电影/流.这张图片每秒更新1次.

I need to create a movie/stream with ffmpeg from a HTTP url that points to an image. This image gets updated 1 time per second.

我已经知道如何使用ffmpeg命令行从MPEG-4转换为flv，但是现在我需要从已更新的静止图像开始.例如，我希望ffmpeg每秒1次获取"网址.

I already know how to convert from MPEG-4 to flv for example using the ffmpeg command line, but now I need to start from this still image that gets updated. I would like ffmpeg to 'GET' the url 1 time per second for example.

致谢

Wim

推荐答案

所需的命令行选项是 -loop_input .我目前正在使用此命令行执行此操作:

The command line option needed is -loop_input. I am currenly using this command line to do it:

ffmpeg -loop_input -analyzeduration 0 -r 3 -i http://ipaddress/current.jpg -an -re -copyts -f flv output.flv

-loop_input 指示ffmpeg以输入帧速率(在此示例中为3 fps)读取给定URL上的jpg. -analyzeduration 0 将加快启动速度，并更快地显示电影的第一帧.输出可以是任何东西，在这里的示例中，它是Flash电影，但也可以是ffmpeg支持的任何东西.

The -loop_input instructs ffmpeg to read the jpg on the given URL at the input frame rate (3 fps in this example). The -analyzeduration 0 will give a quicker startup and show the first frame of your movie faster. The output can be anything, in the example here, it is a flash movie, but it can be anything ffmpeg supports.

这篇关于从不断变化的静态图片网址生成带有ffmpeg的电影?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！