Natalie Portman looks really thin, but that’s because the image dimensions (720×576 pixels – PAL standard) are for 5:4 aspect ratio, and whereas the actual image should be 16:9. This does indeed extract a PNG image every 20 seconds (framerate = 0.05), but it does not take into account that the DVD image material is stored anamorphically. To give you an example: this is a script I wrote to extract screenshots of DVD files, straight from the disk.įfmpeg -i -r. It exists for all flavours of Linux/Unix, and also for Windows. It does format conversion (MPEG1/2/4, Quicktime, AVI …), rescaling, recompressing, frame rate conversion … almost everything. I’ve been playing around a lot with video conversion lately and one of the tools I use often is the Swiss armyknife for video manipulation ‘ ffmpeg‘.
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