[vlc-devel] [PATCH] --sout crop fix, padd feature

[Udo Richter]

Hi list,

I wrote a patch that fixes cropping on stream transcode and also 
introduces padding. The patch is currently just a working version for 
me, but I could refine it further for including it into vlc trunk. Of 
course this requires someone to do the reviewing, check whether this 
matches code plans and finally submitting it.

Here's an overview:
-Based on libavcodec crop / padd filter
-Introduces crop / padd sub filter based on ffmpeg "video filter2"
-Shares code with "video filter2" but should be fully backwards
  compatible
-Uses i_visible_width/height and i_x/y_offset fields of in/out format
  description (seems to match the idea)
-Compensates video aspect for cropping/padding

todo:
-libavcodec version checks
-parameter checks (everything should be mod-2, range checks)
-workaround code for ffmpeg 0.4.8?
-port from 0.8.1 to trunk?

The current diff (against 0.8.1) is available here:
http://www.mathematik.uni-kassel.de/~urichter/temp/croppadd-1.diff

Cheers,

Udo

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