从图像创建视频会为某些图像格式生成黑屏视频 [英] Creating video from images produces black screen video for certain image formats

问题描述

我正在使用以下命令从图像创建视频.该命令对大多数图像都适用，但是对于png图像，无法播放创建的视频，而我只会出现黑屏.

I am using below command to create video from images.The command works fine for most images but for png images the video created cannot be played and I just get a black screen.

 String[]  command = new String[]{"-y", "-f", "concat", "-safe", "0", "-i", src.getAbsolutePath(), "-vsync", "vfr", "-vf", "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2", dest.getAbsolutePath()};

此处目标文件路径为mp4格式.我的命令怎么了?

Here destination file path has mp4 format.. Whats wrong with my command?

推荐答案

添加 format = yuv420p .当给RGB输入和输出MP4格式时，ffmpeg会选择一种与许多播放器不兼容的像素格式.

Add format=yuv420p. When given RGB input and output as MP4, ffmpeg chooses a pixel format not compatible with a lot of players.

使用

 String[]  command = new String[]{"-y", "-f", "concat", "-safe", "0", "-i", src.getAbsolutePath(), "-vsync", "vfr", "-vf", "scale=1280:720:force_original_aspect_ratio=decrease,pad=1280:720:(ow-iw)/2:(oh-ih)/2,format=yuv420p", dest.getAbsolutePath()};

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