As incredible said, try AssumeFPS(23.976, true) and don't worry about the pitch change ^_^įor VCD, the only other options would be changeFPS(29.97) which would be very jerky, or ConvertFPS(29.97) which would end up with a lot of blurred frames. The only time I ever notice the pitch change is if I've heard the 24fps audio very recently (or a lot) before hearing it in 25fps, or if I've been listening to the soundtrack album a lot - I don't think it's anything to get worried about, IMO.Īnyway, back on topic (sorry for my rant):Įl Enmascarado, it appears you are making VCDs? Is this true? That means you're stuck with 352x240 - so these mentions of interlaced convertions (using DGBob, etc.) won't be much help. I just never bother with them - most (if not all?) proper PAL telecine conversions don't appear to change the pitch, and I still notice this on new DVDs. I've heard this many a time too about pitch correction algorithms. Search for DGPulldown by Neuron2 (Donald A. A slightly more complicated pattern can be used to convert directly from 25 frames per second progressive to 59.94 fields per second interlaced. Timestretch() by the nature of the algorithm used causes noticable distortion in the result, generally use it for speech only, never for high quality music.SelectEvery(8, 0,1, 2,3,2, 5,4, 7,6,7)This implements the standard NTSC-Film telecine pattern. The 2.5.6 version now is quite close to SSRC() in quality.
#Using propellerhead recycle to slice speech code
ResampleAudio() does not have this restriction, but prior to Avisynth 2.5.6 the code had a slight creeping error in the calculations which caused distortion in the result. With what I have mentioned here I am just scratching the surface.Īs you are finding out the other part to this problem is audio sync.SSRC fails to respond.SSRC() give very high quality conversion between 2 audio sample rates but is limited to rates that have a limited rational relationship. MVTools emulates this performance but is still being developed. Motion Perfect is a product that achives credible results.
Other methods which avoid the jitter like a $100,000 Snell and Wilcox machine involve motion prediction to interpolate timewise the new frames. All these methods cause motion jitter, using the interlaced method gives a motion jitter with lower amplitude and higher frequency hence less noticable but is only suitable for viewing on interlaced display device like a TV. blending is hard to reverse, duplicating is easier. interlaced, progresive, etc, and the ease which the process can be reversed, e.g. This is a complicated and very much discussed topic.Ĭan you explain what is the difference using all 3 methods?Įach method has it's pro's and con's depending on the source and destination display format, e.g. Thanks so much that work great, but one more thing, what do u mean to get me started? is there more to do?In short YES. If you want to encode to mpeg2 DVD then you can LEAVE the progressive stream at 25fps! and after encoding to still 25fps you simply process that resulted 25fps mpeg2 by using DgPulldown to obtain a DVD compilant NTSC stream! do you really have to end up with a 29.97 fps NTSC Videostream? If you want to keep the tone then change.
So by lowering the Pitch you even should obtain the correct tone. The script for your needs would look like this:Īvisource("25fps_Progressive_palsource.avi")Īssumefps(23.976, true) does lower the pitch of your audio ton a bit, but in most cases the specific PAL country language tracks are spoken on 24fps for cinema purposes and pitched up to 25 for DVD/TV mastering/broadcasting purposes.
The flow of the stream will be recognisely interrupted and a nice jitter effect will be the result. If said the truth, I hate that name lately as it was the first "thing" came into my mind when registering at 3 Years ago as that word was included in a headline of a newspaper I got in front of mine in that moment *lol*Ī simple ChangeFPS(29.97) out of 25fps done on a non-fieldseparated stream is one of the worst conversations you can do. Maybe my nic is "incredible" but im not that incredible *lol*.
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