FFmpeg从图像创建视频 [英] FFmpeg create video from images

问题描述

  ffmpeg -r 1/5 -start_number 2 -i img％03d.png -c：v libx264 -r 30 -pix_fmt yuv420p out.mp4 
  

这一行工作正常，但我想成为另一个文件夹。
我的文件夹中的图像名称：

  img001.jpg 
 img002.jpg 
 img003。 jpg 
 ... 
  

如何从另一个文件夹进入图像？例如：C：\mypics

我尝试过这个代码，但是ffmpeg仅为第一个图像（img001.jpg）设置了视频。

  ffmpeg -r 1/5 -start_number 0 -i C：\myimages\img％03d.png -c：v libx264 -r 30 -pix_fmt yuv420p out.mp4 
  

解决方案

请参阅从图像创建视频幻灯片 - FFmpeg

如果您的视频没有正确显示帧如果遇到问题，例如第一个图像被跳过或仅显示一帧，然后使用 fps视频过滤器而不是 -r 输出帧速率

  ffmpeg -r 1/5 -i img％03d.png -c：v libx264 -vf fps = 25 -pix_fmt yuv420p out.mp4 
  / pre> 
 
 
 
 
或者格式视频过滤器可以添加到过滤器链，以替换 -pix_fmt yuv420p ，如fps = 25，format = yuv420p。这种方法的优点是您可以控制哪个过滤器首先
 
 
 
 
 
  ffmpeg -r 1 / 5 -i img％03d.png -c：v libx264 -vffps = 25，format = yuv420pout.mp4 
  
 我测试了以下参数，它适用于我 
 e： \ffmpeg\ffmpeg.exe-r 1/5 -start_number 0 -iE：\images\01\padlock％3d.png-c：v libx264 -vffps = 25，format = yuv420pe：\out.mp4 
  
 以下参数也有效，但总是跳过第一张图片 
 e：\ffmpeg\ffmpeg.exe-r 1/5 -start_number 0 -iE：\images\01\padlock％3d.png-c：v libx264 -r 30 -pix_fmt yuv420p e：\out.mp4 
  
 从放置在不同文件夹中的图片制作视频 
 
 
 
首先添加图像路径到 imagepaths.txt ，如下所示。
  
＃这是一个评论详情https://trac.ffmpeg.org/wiki/Concatenate 
 
文件'E：\images\png\images __％3d.jpg' 
文件'E：\images\jpg\images __％3d.jpg'
  
样本用法如下：
  
h：\ffmpeg\ffmpeg.exe-y -r 1/5 -f concat -safe 0 -iE：\images\imagepaths.txt-c：v libx264 -vffps = 25，format = yuv420pe：\out.mp4
  
  -safe 0 参数阻止不安全的文件名错误
 
 
 
 相关链接 
 
 
 
  FFmpeg从放置在不同文件夹中的图像制作视频 
 
 
 
  FFMPEG中级指南/图片序列 
 
 
 
  Concatenate  -  FFmpeg  
 
ffmpeg -r 1/5 -start_number 2 -i img%03d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4
This line worked fine but i want into image another folder.
Image names in My folder:
img001.jpg
img002.jpg
img003.jpg
...
How to into images from another folder? example: "C:\mypics"

I tried this code but ffmpeg set video for first image (img001.jpg) only.
ffmpeg -r 1/5 -start_number 0 -i C:\myimages\img%03d.png -c:v libx264 -r 30 -pix_fmt yuv420p out.mp4

解决方案
See the Create a video slideshow from images – FFmpeg

  
If your video does not show the frames correctly If you encounter problems, such as the first image is skipped or only shows for one frame, then use the ​fps video filter instead of -r for the output framerate


ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4



  
Alternatively the ​format video filter can be added to the ​filterchain to replace -pix_fmt yuv420p like "fps=25,format=yuv420p". The advantage to this method is that you can control which filter goes first


ffmpeg -r 1/5 -i img%03d.png -c:v libx264 -vf "fps=25,format=yuv420p" out.mp4
I tested below parameters, it worked for me
"e:\ffmpeg\ffmpeg.exe" -r 1/5 -start_number 0 -i "E:\images\01\padlock%3d.png" -c:v libx264 -vf "fps=25,format=yuv420p" e:\out.mp4
below parameters also worked but it always skips the first image
"e:\ffmpeg\ffmpeg.exe" -r 1/5 -start_number 0 -i "E:\images\01\padlock%3d.png" -c:v libx264 -r 30 -pix_fmt yuv420p e:\out.mp4
making video from images placed in different folders

First add image paths to imagepaths.txt like below.

# this is a comment details https://trac.ffmpeg.org/wiki/Concatenate

file 'E:\images\png\images__%3d.jpg'
file 'E:\images\jpg\images__%3d.jpg'
Sample usage as follow;

"h:\ffmpeg\ffmpeg.exe" -y -r 1/5 -f concat -safe 0 -i "E:\images\imagepaths.txt" -c:v libx264 -vf "fps=25,format=yuv420p" "e:\out.mp4"
-safe 0 parameter prevents Unsafe file name error 

Related links

FFmpeg making video from images placed in different folders

FFMPEG An Intermediate Guide/image sequence

Concatenate – FFmpeg

                        
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