不断向视频添加图片
每隔 x 分钟我就会从网络摄像头抓取一张图像。现在我想将此图片即时添加到现有视频文件中。
我不想保留大量图像文件，然后偶尔使用例如
mencoder mf://@${LIST} -mf type=jpg:fps=${FPS} ...
视频格式/编解码器对其进行编码，只要标准工具（mplayer，ffmpeg，vlc，...）可以处理它即可。
有什么想法或建议吗？ 提前致谢！
Every x minutes I grab an image from a network-cam. Now i want to add this picture to an existing video file - on the fly.
I don't want to keep numerous image files and then encode them once in a while with e.g.
mencoder mf://@${LIST} -mf type=jpg:fps=${FPS} ...
The video format/codec doesn't really matter, as long as standard tools (mplayer, ffmpeg, vlc, ...) can handle it.
Any ides or suggestions?
Thanks in advance!
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一个明显的可行方法（至少根据我的第一次测试）是将新的 jpeg 图像写入视频文件的末尾 - 因此视频是 mjpeg 流。
猫${PIC}>> ${VIDEO}这是我问题的答案，但是我正在寻找比单独存储的图片占用的空间更少的东西。
其他提示？
One obvious way which should work (at least according to my first tests) is to just write the new jpeg image to the end of the video file - so the video is a mjpeg stream.
cat ${PIC} >> ${VIDEO}This is an answer to my question, however i was looking for something consuming less space than the pictures stored each by its own would take up.
Other hints?