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50p to 50i (PAL DVD) – what’s the best way to do this?
Can anyone advise on the best way to convert footage that’s shot in 50p to 50i (PAL DVD). I’m using the 720p HDV 25fps template so would I better off selecting ‘disable resample’ on the events first to effectively make it 25p or doesn’t this make any difference in the case of rendering to 50i?
Incidentally, I shoot in 50p deliberately to take advantage of the nice slow-mo when stretched over a 25p timeline.
Thanks
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2 Replies
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Just like to clarify that when i say 50i I mean 50 fields per second at 25 frames per second – ie normal PAL DVD.
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Just thought i’d answer my own question as i’ve just done a bit of experimenting.
When rendering 50fps 720p footage from a HDV 25fps timeline down to SD PAL 25fps 50i (normal PAL DVD settings) it makes a massive difference to render times if you disable resampling, and no difference to resulting file size or quality, as far as i can see.
Just rendered a 2 minute clip and with the resampling enabled it took 8 minutes, and with the resampling disabled it took 4 minutes – both files were identical in size. This is going to save me LOADS of time when making DVD’s for clients as, up until now, i’ve been rendering them with enabled resampling and only stumbled upon this other way by accident. I would have thought that 50p would convert to 50i faster than 25p to 50i but this doesn’t seem to be the case. I guess the rendering time being approximately half is no coincidence.
I haven’t viewed the results on a DVD yet so there might be a subtle difference in how motion is rendered. Might not though.
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