On Friday, January 23, 2015 5:24 AM, Werner Robitza
<[email protected]> wrote:
On Fri, Jan 23, 2015 at 3:28 AM, Mark <[email protected]> wrote:
> Thanks for responding. I'd like to alter the overlay image / watermark based
> on an external condition. So far I've tried pointing the image input to an
> http servlet that will alter the image data. Didn't work as it seems ffmpeg
> caches the remote image after the first call.
So, put differently, there's a live encoding process and you'd like to
change the watermark image dynamicall during encoding?
(Please don't top-post.)
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That is correct. Below is the command line I'm using currently as a test.
Note that the url used in the second input is calling server side code that
serves up the image file(s). Is there a param to turn off caching of the image
so ffmpeg will continue to poll the image?
ffmpeg -i movie.mp4 -i http://localhost/api/images/v1/overlay.png
-filter_complex "[0:v][1:v]overlay=W-w-10:H-h-10[watermark]" -map "[watermark]"
-map 0:a -codec:v libx264 -preset veryfast -crf 18 -codec:a copy output.mp4
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