图像序列的视频流？ [英] Image sequence to video stream?
问题描述
许多人一样似乎已经有（有多个线程对这个问题在这里）我在想办法从图像序列创建的视频。
Like many people already seem to have (there are several threads on this subject here) I am looking for ways to create video from a sequence of images.
我想要实现在C＃我的功能！
I want to implement my functionality in C#!
下面是我wan't做的：
Here is what I wan't to do:
/*Pseudo code*/
void CreateVideo(List<Image> imageSequence, long durationOfEachImageMs, string outputVideoFileName, string outputFormat)
{
// Info: imageSequence.Count will be > 30 000 images
// Info: durationOfEachImageMs will be < 300 ms
if (outputFormat = "mpeg")
{
}
else if (outputFormat = "avi")
{
}
else
{
}
//Save video file do disk
}
我知道有一个叫做项目的熔接机（ HTTP：//splicer.$c$cplex.com / ），但我无法找到合适的文档或明显的例子，我可以按照（<一个href=\"http://www.$c$cplex.com/Splicer/Wiki/View.aspx?title=News%20Feeds&referringTitle=Home\">these是我找到的例子）。
I know there's a project called Splicer (http://splicer.codeplex.com/) but I can't find suitable documentation or clear examples that I can follow (these are the examples that I found).
最近我想做的事情，我觉得在这里codePLEX是这样的：
<一href=\"http://stackoverflow.com/questions/251467/how-can-i-create-a-video-from-a-directory-of-images-in-c\">How我可以在C＃中图像的目录中创建一个视频？
The closest I want to do, which I find here on CodePlex is this: How can I create a video from a directory of images in C#?
我也看到有关的的ffmpeg （例如这几个主题：<一href=\"http://stackoverflow.com/questions/1707516/c-sharp-and-ffmpeg-$p$pferably-without-shell-commands\">C# ？和FFmpeg的preferably没有shell命令以及这样的：使用的ffmpeg转换图像序列），但我觉得没有人帮助我与我的问题，我不认为的ffmpeg -command线风格对我来说是最好的解决方案（因为图像的量）
I have also read a few threads about ffmpeg (for example this: C# and FFmpeg preferably without shell commands? and this: convert image sequence using ffmpeg) but I find no one to help me with my problem and I don't think ffmpeg-command-line-style is the best solution for me (because of the amount of images).
我相信，我可以使用拼接器以某种方式 - 项目（？）。
I believe that I can use the Splicer-project in some way (?).
在我的情况下，约约> 30 000的图像，每个图像应显示为约200毫秒（在视频流，我想创建）。
In my case, it is about about > 30 000 images where each image should be displayed for about 200 ms (in the videostream that I want to create).
（视频是什么？越来越多的植物...）
(What the video is about? Plants growing ...)
谁能帮我完成我的功能？
Can anyone help me complete my function?
推荐答案
那么，这个答案来得有点晚了，但因为我已经注意到与我原来的问题最近的一些活动（以及有没有提供一个可行的解决方案的事实）我想给你什么终于为我工作。
Well, this answer comes a bit late, but since I have noticed some activity with my original question lately (and the fact that there was not provided a working solution) I would like to give you what finally worked for me.
我要我的答案分为三部分：
I'll split my answer into three parts:
- 背景
- 问题
- 解决方案
（此部分是不重要的溶液）
(this section is not important for the solution)
我原来的问题是，我有很多的图像（即一个巨大的量），这是单独存储在数据库中的字节数组图像。的我要拍一个视频序列与所有这些图像。的
My original problem was that I had a lot of images (i.e. a huge amount), images that were individually stored in a database as byte arrays. I wanted to make a video sequence with all these images.
我的设备安装了这样的事情总图：
My equipment setup was something like this general drawing:
图像描绘在不同状态下成长的番茄植株。所有的图像是在白天每隔1分钟。
The images depicted growing tomato plants in different states. All images were taken every 1 minute under daytime.
/*pseudo code for taking and storing images*/
while (true)
{
if (daylight)
{
//get an image from the camera
//store the image as byte array to db
}
//wait 1 min
}
我有一个非常简单的数据库存储图像，有它只有一个表（该表ImageSet）：
I had a very simple db for storing images, there were only one table (the table ImageSet) in it:
我读到的ffmpeg（请参阅我原来的问题）的文章很多，但我找不到任何关于如何从图像的采集到的视频。
I had read many articles about ffmpeg (please see my original question) but I couldn't find any on how to go from a collection of images to a video.
最后，我得到了一个工作的解决方案！
它的主要部分来自于开源项目 AForge.NET 。总之，你可以说， AForge.NET是在C＃计算机视觉和人工智能库。
（如果你想在框架的一个副本，只要抓住它 http://www.aforgenet.com/ ）
Finally, I got a working solution! The main part of it comes from the open source project AForge.NET. In short, you could say that AForge.NET is a computer vision and artificial intelligence library in C#. (If you want a copy of the framework, just grab it from http://www.aforgenet.com/)
在AForge.NET，有这种VideoFileWriter类（与ffmpeg的帮助编写videofiles一类）。这几乎做了所有的工作。 （还有一个很好的例子<一个href=\"http://www.aforgenet.com/framework/docs/html/4ee1742c-44d3-b250-d6aa-90cd2d606611.htm\">here)
In AForge.NET, there is this VideoFileWriter class (a class for writing videofiles with help of ffmpeg). This did almost all of the work. (There is also a very good example here)
这是我用来获取和图像数据从我的图像数据库转换成影片的最后类（减少）：
This is the final class (reduced) which I used to fetch and convert image data into a video from my image database:
public class MovieMaker
{
public void Start()
{
var startDate = DateTime.Parse("12 Mar 2012");
var endDate = DateTime.Parse("13 Aug 2012");
CreateMovie(startDate, endDate);
}
/*THIS CODE BLOCK IS COPIED*/
public Bitmap ToBitmap(byte[] byteArrayIn)
{
var ms = new System.IO.MemoryStream(byteArrayIn);
var returnImage = System.Drawing.Image.FromStream(ms);
var bitmap = new System.Drawing.Bitmap(returnImage);
return bitmap;
}
public Bitmap ReduceBitmap(Bitmap original, int reducedWidth, int reducedHeight)
{
var reduced = new Bitmap(reducedWidth, reducedHeight);
using (var dc = Graphics.FromImage(reduced))
{
// you might want to change properties like
dc.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
dc.DrawImage(original, new Rectangle(0, 0, reducedWidth, reducedHeight), new Rectangle(0, 0, original.Width, original.Height), GraphicsUnit.Pixel);
}
return reduced;
}
/*END OF COPIED CODE BLOCK*/
private void CreateMovie(DateTime startDate, DateTime endDate)
{
int width = 320;
int height = 240;
var framRate = 200;
using (var container = new ImageEntitiesContainer())
{
//a LINQ-query for getting the desired images
var query = from d in container.ImageSet
where d.Date >= startDate && d.Date <= endDate
select d;
// create instance of video writer
using (var vFWriter = new VideoFileWriter())
{
// create new video file
vFWriter.Open("nameOfMyVideoFile.avi", width, height, framRate, VideoCodec.Raw);
var imageEntities = query.ToList();
//loop throught all images in the collection
foreach (var imageEntity in imageEntities)
{
//what's the current image data?
var imageByteArray = imageEntity.Data;
var bmp = ToBitmap(imageByteArray);
var bmpReduced = ReduceBitmap(bmp, width, height);
vFWriter.WriteVideoFrame(bmpReduced);
}
vFWriter.Close();
}
}
}
}
更新2013年11月29日（如何）（希望这是你问什么@Kiquenet？）
Update 2013-11-29 (how to) (Hope this is what you asked for @Kiquenet?)
- 从下载页面下载AForge.NET框架（下载文件ZIP压缩文件，你会发现很多有趣的视觉与项目，如视频工作室解决方案，在
AForge.NET框架-2.2.5 \\ Samples文件夹...） - 命名空间：
AForge.Video.FFMPEG（从<一个href=\"http://www.aforgenet.com/framework/docs/html/4ee1742c-44d3-b250-d6aa-90cd2d606611.htm\">documentation) - 大会：
AForge.Video.FFMPEG（在AForge.Video.FFMPEG.dll）（从<一个href=\"http://www.aforgenet.com/framework/docs/html/4ee1742c-44d3-b250-d6aa-90cd2d606611.htm\">documentation) （你可以找到这个AForge.Video.FFMPEG.dll在AForge.NET框架-2.2.5 \\发布文件夹）
- Download AForge.NET Framework from the downloads page (Download full ZIP archive and you will find many interesting Visual Studio solutions with projects, like Video, in the
AForge.NET Framework-2.2.5\Samples folder...) - Namespace:
AForge.Video.FFMPEG(from the documentation) - Assembly:
AForge.Video.FFMPEG(inAForge.Video.FFMPEG.dll) (from the documentation) (you can find thisAForge.Video.FFMPEG.dllin theAForge.NET Framework-2.2.5\Releasefolder)
如果你想创建您的自己的解决方案的，请确保你在你的项目中引用 AForge.Video.FFMPEG.dll 。然后，它应该很容易使用VideoFileWriter类。如果按照<一个href=\"http://www.aforgenet.com/framework/docs/html/4ee1742c-44d3-b250-d6aa-90cd2d606611.htm\">link对类，你会发现一个很不错的（和简单的例子）。在code，他们喂养与位图在为 -loop
If you want to create your own solution, make sure you have a reference to AForge.Video.FFMPEG.dll in your project. Then it should be easy to use the VideoFileWriter class. If you follow the link to the class you will find a very good (and simple example). In the code, they are feeding the VideoFileWriter with Bitmap image in a for-loop
这篇关于图像序列的视频流？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！
