如何在飞行中做慢动作
是否有（Linux 或 Windows）命令行工具能够创建视频文件的慢动作版本？
对于一个有趣的项目，我想从紧凑型相机（h624、1020p @ 30 fps 或 720p @ 60 fps）录制短视频（最多 1 分钟），通过 Eye-FI 无线网卡将其发送到计算机并显示以慢动作录制。所有这些都以尽可能最慢的等待时间进行，完全自动化，并且多次使用不同的录音。
我想到的简单解决方案是通过降低指示的帧速率来更改元数据。更好的是一些插值甚至扭曲算法可以产生更高的质量。
播放速度应该在 20% 到 50% 左右，具体取决于最终的质量（看起来仍然不错）。可以使用 Macromedia Flash、mplayer、VLC 等进行播放。
我不知道有什么工具可以自动修改视频文件（除了编写我自己的程序来更改视频文件元数据）。
Is there a (Linux or Windows) command line tool that is able to create a slow-motion version of a video file?
For a fun project, I want o record a short video (max 1 minute) from a compact camera (h624, 1020p @ 30 fps or 720p @ 60 fps), send it to a computer via a Eye-FI wlan card and show the recording in slow motion. All with the slowest waiting time possible, fully automated and several times with different recordings.
The simple solution that comes to my mind would be to change the metadata by lowering the indicated frame rate. Even better would be some interpolation or even warping algorithm that generates a higher quality.
The playback speed should be around 20% to 50%, depending on the resulting quality that's still looking somewhat good. Playback could be done with Macromedia Flash, mplayer, VLC or something.
I don't know any tools that modify video files in an automated way (except for writing my own program to change the video file metadata).
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查看avisynth 并查看这个
Have a look on avisynth and see this
慢动作视频是通过更快地运行相机然后以正常速度播放来录制的。如果您的相机以标准帧速率运行，您只能以较慢的速度播放视频，这将导致动画不稳定。
Slow motion video is recorded by running the camera faster and then playing it back at a normal speed. If your camera is running at standard frame rates, you can only play back the video slower, which will result in jerky animation.