使用FFmpeg从mjpeg转换为mp4(libx264) [英] Conversion from mjpeg to mp4 (libx264) with FFmpeg

问题描述

如果您使用FFmpeg将mjpeg转换为mp4(libx264)，在Windows·Mac上无法执行播放.

If you convert from mjpeg to mp4 (libx264) with FFmpeg, Playback can not be performed on Windows · Mac.

缩略图未显示在图标上.但是，使用HTML5视频代码可以播放.

Thumbnails are not displayed on the icon. However, with the HTML5 Video tag, playback is possible.

为什么?请告诉我您是否理解.谢谢.

Why? Please tell me if you understand. Thank you.

ffmpeg -i source_file.mov -b 4000k -vcodec libx264 destination_file.mp4

推荐答案

通常的原因是像素格式.MJPEG可能具有4:2:2或4:4:4色度采样，这是大多数播放器在H264中不支持的.所以尝试

The usual reason for this is the pixel format. The MJPEG may have 4:2:2 or 4:4:4 chroma sampling which most players don't support in H264. So try

ffmpeg -i source_file.mov -pix_fmt yuv420p -b:v 4000k -c:v libx264 destination_file.mp4

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