Streaming single image with ffmpeg

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最新推荐文章于 2024-10-31 18:20:41 发布

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分类专栏： Linux笔记编程技术文章标签： ffmpeg yuv

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本文介绍了一种通过使用ffmpeg工具循环播放一张静态图片到Red5流媒体服务器的方法，以实现临时替代直播视频流的目的。这种方法可以避免客户端显示无限缓冲的情况，并向用户显示“视频不可用”的提示。

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I was asked to disable live video broadcast for a day or two. If I stop feeding into Red5 streaming service the flash player will display as if buffering for ever. Not nice for end users who will report this as an error. It would be nice to show a message say “Video not available”. I made a picture for this purpose. ffmpeg works like a charm again this time.

ffmpeg -loop 1 -i not_available.png -r 5 -vcodec libx264 -pix_fmt yuv420p -f flv rtmp://red5server:1935/live/myStream

The only trick here is the colour space which if I don’t specify will result a black background showing on flash players. This may only apply to PNG file since I didn't try JPEG but the official site recommends using this parameter when producing video from a single image.