如何在视频/图像上添加图像或文本（水印）-Flutter / Dart [英] How to add an image or text (Watermark) on a video/image - Flutter/Dart

问题描述

我正在构建一个 Flutter 应用程序，该应用程序需要在视频和图像上添加标记。
是否可以通过 firebase （或任何其他服务）实现这一目标？我可以在客户端上执行此操作，但是我也找不到与视频/图像处理相关的任何flutter / Dart程序包。

I'm building a Flutter application which needs to add waermark on videos and images. Is there any way to achieve this with firebase (or any other service)? I could do this on client-side but also there i can't find any flutter/Dart package related to video/image processing.

请指导我如何做。

谢谢

推荐答案

对于视频：

• https://github.com/tanersener/flutter-ffmpeg ，尽管我找不到任何明确记录编辑视频方法的内容，例如水印。但根据其他人 https://stackoverflow.com/a/57847155/6668797 。



• https://pub.dev/packages/video_manipulation

• https://github.com/tanersener/flutter-ffmpeg, though I couldn’t find anything that explicitly documents a way to edit the video, such as a watermark. But it should be possible according to others https://stackoverflow.com/a/57847155/6668797.

• https://pub.dev/packages/video_manipulation

将静止帧添加到现有视频，例如水印

Adding still frames to an existing video, e.g. watermarks

.generateVideo（列表路径，字符串文件名，整数fps，双倍
速度）。

参数 paths 个输入文件路径列表。可以是用于生成新视频的图像（.jpg或
.png）或视频文件（.mp4）。
例如： [ documents / input.mp4， documents / watermark.jpg]

Parameters paths list of input file paths. Can be images (.jpg or .png) or video files (.mp4) that are used to generate the new video. E.g.: ["documents/input.mp4", "documents/watermark.jpg]

对于图像：

• https://pub.dev/packages/image

加载，保存和处理各种不同文件格式的图像。

load, save and manipulate images in a variety of different file formats.

> https://github.com/brendan-duncan/image/wiki/Examples

drawString（image，arial_24，0，0，'Hello World'）;

关于其他服务，我不知道，但是Firebase不提供此服务。

As for other services, I don't know, but Firebase does not offer this service.

否则，在客户端/应用程序端，当前没有太多其他视频，但是还有更多可用的图像，您可以搜索 https://pub.dev/flutter/packages?q=image+editor 。但是，要获得更多选择，您必须寻找本机Android / iOS库和 custom通过平台渠道整合它们。

Otherwise, client/app-side, there’s currently not much else for videos, but there's more available for images, you can search https://pub.dev/flutter/packages?q=image+editor. However, for more options, you’ll have to seek out native Android/iOS libraries and custom integrate them through the platform channels.

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