出现 'scale' filter not present, cannot convert pixel formats. Error reinitializing filters! Failed to inject frame into filter network: Invalid argument Error while processing the decoded data for stream #0:0这么办

这个错误提示通常是由于 FFmpeg 缺少 'scale' 滤镜导致的，而 'scale' 滤镜是用于调整视频帧大小的。如果你的 FFmpeg 安装中缺少 'scale' 滤镜，那么你需要重新编译 FFmpeg 并确保它包含了 'scale' 滤镜，或者安装一个已经包含 'scale' 滤镜的 FFmpeg 版本。

如果你使用的是 Linux 系统，你可以尝试使用包管理器来安装 FFmpeg，如下所示：

sudo apt-get install ffmpeg

如果你使用的是 Windows 系统，你可以从 FFmpeg 官网下载编译好的二进制文件，并将其添加到系统的 PATH 环境变量中。

另外，你可以尝试使用其他的视频处理库来进行帧大小调整，如 OpenCV。这样可以避免依赖于 FFmpeg 中的 'scale' 滤镜。

相关问题

FFmpeg 'scale' filter not present, cannot convert pixel formats.

This error message indicates that the 'scale' filter is missing in your FFmpeg installation. The 'scale' filter is responsible for resizing video frames, and it is often used in video conversion and transcoding tasks.

To fix this issue, you should check if the 'scale' filter is included in your FFmpeg installation. You can do this by running the following command in your terminal:

ffmpeg -filters | grep scale

If the 'scale' filter is not listed, you may need to recompile FFmpeg with the necessary dependencies or install a version of FFmpeg that includes the 'scale' filter. Alternatively, you can try using a different video processing library that supports frame resizing, such as OpenCV.

如何将system.drawing.image转换成Sixlabors.imagesharp.pixelformats.Rgba32

您可以使用SixLabors.ImageSharp库中的Image.Load方法加载System.Drawing.Image，然后使用ToRgba32方法将其转换为SixLabors.ImageSharp.PixelFormats.Rgba32。下面是示例代码：

using SixLabors.ImageSharp;
using SixLabors.ImageSharp.PixelFormats;
using System.Drawing;

// load the System.Drawing.Image
var systemDrawingImage = Image.FromFile("image.jpg");

// convert to SixLabors.ImageSharp.PixelFormats.Rgba32
var imageSharpImage = Image.Load(systemDrawingImage.ToByteArray(ImageFormat.Jpeg));
var rgba32Image = imageSharpImage.CloneAs<Rgba32>();