[Ffmpeg-devel] Capturing every keyframe from a DVD
Mon Jun 13 21:35:25 CEST 2005
Rich Felker <dalias at aerifal.cx> writes:
> On Mon, Jun 13, 2005 at 04:50:06PM +0200, M?ns Rullg?rd wrote:
>> Clayton Brown <clayton.brown at digitalrum.com> writes:
>> > Does anyone know how to save every keyframe from a DVD into a format
>> > such as JPG/TIFF etc.
>> Extract the video stream, and send it through an AVParser. Discard
>> any non-I frames, and decode the I frames using libavcodec as usual.
>> Save the decoded frames to separate images using your favorite library
>> for your format of choice (libavcodec/libavformat handles some of
> Actually there should be a way to convert mpeg1(/2/4?) keyframes into
> jpeg files losslessly without decoding and reencoding, shouldn't
> there? :)
Probably, but libavcodec certainly doesn't do it. There are also some
color space issues.
mru at inprovide.com
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