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EpheMeroN
27th August 2005, 08:13
My friend has a PAL video that he wants to use an NTSC audio track on. What is the most user friendly way for someone to do this timestretch? You need to do 23.976 > 25 correct? Is BeSweet the right application? Source was either MP2 or AC3 I forget.

Mug Funky
27th August 2005, 08:32
avisynth can do it. best not to timestretch, as most likely the PAL one isn't - don't want to propagate incorrect pitch.

assumefps(23.976,true).SSRC(48000) should do nicely.

EpheMeroN
27th August 2005, 09:18
Wouldn't that cause the video to become choppy or something? You're changing framerate. He already has the PAL DVD video ready for authoring and doesn't wanna encode at all. I don't think he cares about the pitch unfortunately. If it was my situation I'd do it for best quality and the whole 9 but it's just for a bud who isn't a video/audiophile like us.

magicclue
27th August 2005, 09:34
if the audio track is from 23.976 ntsc then i would just use the speed up to 25fps function in besweet!
You shouldn't notice the speed up.

Stretching may involve clicks/pops

EpheMeroN
27th August 2005, 09:59
Does BeLight have this feature? I ask because isn't BeLight the new supported all-in-one audio transcoding utility instead of BeSweet?

King_Diamond
27th August 2005, 11:27
To my knowledge, there is no difference in audio between PAL and NTSC. The difference is only in the video frame rate, resolution and frequency.

If your friend has the exported audio file, he only needs to add it in the authoring software with the video.

magicclue
27th August 2005, 22:02
Does BeLight have this feature? I ask because isn't BeLight the new supported all-in-one audio transcoding utility instead of BeSweet?
NO!
BeLight is just a GUI!

magicclue
27th August 2005, 22:03
To my knowledge, there is no difference in audio between PAL and NTSC.

aha :eek: :eek: :eek:

:readguid:

EpheMeroN
28th August 2005, 06:45
I completely forgot there that BeLight, is just like BeSweetGUI, where it still needs the core BeSweet.exe in its dir to function. And since I found out that BeSweetGUI has that option to do PAL > NTSC, I assume BeLight has it as well.

King_Diamond
28th August 2005, 15:42
EpheMeron,

Check this thread : http://forum.doom9.org/archive/index.php/t-11180.html

aha :eek: :eek: :eek:

:readguid:

Read the post by smok3!

King_Diamond
28th August 2005, 15:51
I have never tried this but I tried playing an NTSC DVD Disc on a PAL DVD player and a PAL DVD Disc on an NTSC DVD player. The picture is horrible and black and white on both issues, however the audio is ok.

As your friend has the audio track separately, I think he should try to author it and see the result.

bond
28th August 2005, 19:47
your friend should change the framerate of the video and not change the audiolength, cause the video framerate can be changed without qualityloss