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Just started using xbmc Linux and if I playback in 60hz then all audio works fine, if however I change it to 23.98 or auto change it stop working, no sound at all
Anyone have any ideas/
cheersā¦
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Iāve been on an internship at a post-production house called Studio Post for a little while now. And in the past two and a half weeks I have learned lots. Particularly when it comes to framerates. Now this has brought something to my attention.
Letās say youāre shooting a documentary. Being a documentary youāre going to get footage from everywhere.Ā ArchivalĀ film, newly shot interviews, what have you. Now in an example with theĀ archivalĀ film (23.98) you would convert it to 29.97i with pulldown.
(image of 3-2 pulldown fromĀ avchduster.com)
Then youāll proceed to edit with everything at 29.97 and finally mastering in 29.97. Doing this prevents you from be able to do the; following.
You canāt make a progressive scan Blu-ray, because the format doesnāt support 29.97p, only 29.97i
You canāt convert the master to PAL without introducing serious motion artifacts, even on the best conversion hardware.Ā
You wouldāve ābaked inā the 3:2 pulldown pattern of the archival footage and that cannot be removed on playback, leaving repeated fields, or ghost images. (This gets even worse when you convert the frame rate to 25 for PAL).
Or you shoot all your new stuff at 23.98 (andĀ obviouslyĀ donātĀ convertĀ the film footage). Edit and master in 23.98 and by doing this it lets you do the following.
Deliver an NTSC DVD that will play progressive.
Deliver a progressive scan PAL master to non-NTSC countries by speeding up the 23.98 master to 25fps - with this method you have *no* motion artifacts, because youāre doing a 1:1 frame mapping, just playing it faster, effectively.
Create a Blu-ray with a progressive-scan frame rate (23.98) that will play worldwide.
Create 29.97i masters for broadcast, simply by adding 3-2 pulldown when the master is dubbing to tape.
Now there is a lot of resistance to working in 23.98. Heck Iām guilty myself opting not to shoot in 23.98 on the last documentary I did. But now with this knowledge I am not sure why working in 23.98 is not oped for. Itās easy to convert to PAL, 24 and 29.97. I guess itās just an oldĀ rivalry between film and TV in North America.Ā Alternatively you could just move to PAL land and your life will be so much easier.