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Hello Chris, sorry for not responding more quickly ;-) y0017566 schrieb: > I just want to learn how it is done the real way.... > My intention is to create great slow motion effects. It doesn't matter how > long it takes or whether I have to do pre-renders. I already have a lot of > pre-renders done with ReframeRT because my machine is too slow to playback > and I need an accurate timing because I'm cutting to audio The online manual of cinelerra contains a short list with instructions how to process interlaced material with increased framerate. I'm just pasting it here for convenience..... http://cv.cinelerra.org/docs/split_manual_en/cinelerra_cv_manual_en_14.html#SEC192 = Processing interlaced footage without deinterlacing = 1. Create a new project with doubled frame rate. I.e make it 50fps if your source footage is 25i 2. Insert your source footage onto a video track in the timeline. Now, Cinelerra will playback each frame of your footage twice. 3. Apply the "Frames to Fields" effect. Be sure to choose the correct field order. Typical values beeing "bottom field first" for DV and "top field first" for HDV. 4. Then apply any further effects afterwards, including translations, scaling, slow motion, precise frame-wise masking or use of the motion tracker plugin. 5. Render your project to a intermediate clip. Be sure to choose a rather lossless video codec, e.g. Motion-JPEG-A or even uncompressed yuv if you have plenty of storage. 6. Insert the intermediate clip into your original project. Make sure the doubled framerate has been detected correctly by Cinelerra (by looking in the clip's media info in the media resources folder) 7. Apply the "Fields to frames" effect to the intermediate clip. This will combine two adjacent fields into one interlaced field with the original frame rate. 8. Do the final render on your original project Note: unfortunately the naming of the effects was choosen exactly the wrong way round, related to the usual terms. "Frames to Fields" takes /fields/ (half images) and expands them to /full frames/, interpolating the missing lines. > I just have tried to playback a cinelerra render with vlc. There are some > still images inserted. They look fine with "X" but SHIVER badly with "Bob" > and "Linear". This shows that the field order is messed up somehow. VLC uses the information embedded in the header or just plain guesses the right field order, based on the filetype. The field order tells you which of the interleaved lines comes first, and which second. You can always check it if you look at a single frame (export it to an lossless image file like *.png !). If this frame contains an object moving in a known lateral direction, you should be able to see the offset and deduce the field order from there. Typical values are "bottom field first" for DV video and "top field first" for HDV video. >> In an ideal world, it would be possible to shoot 4k 70 fps progressive and >> the software would just handle it in a breeze. Well, dreaming ;-) > hehe, eventually sometime :) yeah, we just need to get ahead with Lumiera :-D Cheers, Hermann -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAktaPU8ACgkQZbZrB6HelLJfzwCg5no5x8po6YDEuYD1fldAxNG1 gBoAnR/njTGchKEczY9FjS0z9R1HDSmy =Q0Qp -----END PGP SIGNATURE----- _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
