ffmpeg从图像创建gif,在创建过程中添加水印? [英] ffmpeg creating gif from images, add watermark during creation?
问题描述
使用此功能可以生成动画:
ffmpeg -v warning -framerate 4 -i /tmp/img-%d.png -i /tmp/img-palette.png -lavfi paletteuse-y -loop 0 -vcodec libx264 -crf 25 -pix_fmt yuv420p -hide_banner /tmp/output.mp4
当我添加以下内容以指定水印源(透明png)时,会生成错误:
-i / tmp /logo.png -filter_complexoverlay = x =(main_w-100):( main_h-50)
完整命令:
ffmpeg -v warning -framerate 4 -i /tmp/logo.png -filter_complexoverlay = x =(main_w-100):( main_h-50)-i /tmp/img-%d.png -i /tmp/img-palette.png -lavfipaletteuse-y -loop 0 -vcodec libx264 -crf 25 -pix_fmt yuv420p -hide_banner /tmp/output.mp4
错误:
视频:1kB音频:0kB字幕:0kB其他流:0kB全局头文件:0kB复用开销:未知
我需要生成动画首先,然后将水印应用于该工件,或者是否在创建过程中将所有内容组合在一起?
使用
ffmpeg -v warning -framerate 4 -i /tmp/img-%d.png -i / tmp / img-palette .png -i /tmp/logo.png -filter_complex[0] [2] overlay = x =(main_w-100):( main_h-50)[v]; [v] [1] paletteuse-y -vcodec libx264 -crf 25 -pix_fmt yuv420p -hide_banner /tmp/output.mp4
预先指定所有输入。您只能指定一个filter_complex。 -lavfi
是 filter_complex
的别名。
I'm successfully creating animations from a series of static png's. I also want to add a watermark, but I'm having some issues when trying to add the watermark source.
Using this generates the animations fine:
ffmpeg -v warning -framerate 4 -i /tmp/img-%d.png -i /tmp/img-palette.png -lavfi "paletteuse" -y -loop 0 -vcodec libx264 -crf 25 -pix_fmt yuv420p -hide_banner /tmp/output.mp4
When I add the following to specify the watermark source (transparent png) an error is generated:
-i /tmp/logo.png -filter_complex "overlay=x=(main_w-100):(main_h-50)"
Full command:
ffmpeg -v warning -framerate 4 -i /tmp/logo.png -filter_complex "overlay=x=(main_w-100):(main_h-50)" -i /tmp/img-%d.png -i /tmp/img-palette.png -lavfi "paletteuse" -y -loop 0 -vcodec libx264 -crf 25 -pix_fmt yuv420p -hide_banner /tmp/output.mp4
Error:
video:1kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Do I need to generate the animation first, then apply the watermark to that artifact or is there a way to combine everything together during the creation process?
Use
ffmpeg -v warning -framerate 4 -i /tmp/img-%d.png -i /tmp/img-palette.png -i /tmp/logo.png -filter_complex "[0][2]overlay=x=(main_w-100):(main_h-50)[v];[v][1]paletteuse" -y -vcodec libx264 -crf 25 -pix_fmt yuv420p -hide_banner /tmp/output.mp4
Specify all inputs upfront. You can only specify one filter_complex. -lavfi
is an alias for filter_complex
.
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