(2026-01-10, 10:03 AM)CSchmidlapp Wrote: My understanding with PAL DVD's is they were just sped up with no pitch correction, so slowing them back down requires no pitch alterations?

Any help and advice on the best way I can do this would be great.
The timing of your posts in this thread is uncanny

If they are TV shows or any other broadcast content, then NO.
Pitch correction is not necessary, as they already have the pitch corrected, thus you only need to change the video from 25fps to 23.976fps, and then set the delay in -ms, depending on how the audio syncs with the 23.976fps video.

(2026-01-10, 05:31 PM)emy54 Wrote:

(2026-01-10, 05:03 PM)velocity Wrote: Most of them, yeah. Some newer ones do have pitch correction. 25 FPS Blu-rays and streaming are more commonly pitch corrected.

For TV shows/broadcasting content, even if they are in 25fps, they already have the pitch corrected.
ONLY movies are sped-up, and therefore have the pitch altered.

Yes, I'm talking about things originating in 23.976 or 24 FPS, I'm aware EU content is natively 25 FPS.

(2026-01-10, 06:14 PM)velocity Wrote:

(2026-01-10, 05:31 PM)emy54 Wrote:

(2026-01-10, 05:03 PM)velocity Wrote: Most of them, yeah. Some newer ones do have pitch correction. 25 FPS Blu-rays and streaming are more commonly pitch corrected.

For TV shows/broadcasting content, even if they are in 25fps, they already have the pitch corrected.
ONLY movies are sped-up, and therefore have the pitch altered.

Yes, I'm talking about things originating in 23.976 or 24 FPS, I'm aware EU content is natively 25 FPS.

I'm talking PAL DVD's, films that were originally 24fps film, telecined at or speed up to 25fps.
I'm putting them back to 23, 976 fps with Audio.

(2026-01-10, 09:17 PM)CSchmidlapp Wrote:

(2026-01-10, 06:14 PM)velocity Wrote:

(2026-01-10, 05:31 PM)emy54 Wrote:

(2026-01-10, 05:03 PM)velocity Wrote: Most of them, yeah. Some newer ones do have pitch correction. 25 FPS Blu-rays and streaming are more commonly pitch corrected.

For TV shows/broadcasting content, even if they are in 25fps, they already have the pitch corrected.
ONLY movies are sped-up, and therefore have the pitch altered.

Yes, I'm talking about things originating in 23.976 or 24 FPS, I'm aware EU content is natively 25 FPS.

I'm talking PAL DVD's, films that were originally 24fps film, telecined at or speed up to 25fps.
I'm putting them back to 23, 976 fps with Audio.

What you basically need to do is rip the DVDs to MKV (you can use MakeMKV for this), then download MKVToolnix and eac3to.
Demux both the audio and the video with MKVExtractGUI, open a CMD prompt with Admin privileges, load up your track with eac3to and slow it down to 23.976fps using this cmd prompt:

Xeac3to.exe (where you extracted eac3to) input (name of your file .ac3 or .dts) output.wav (if you need to edit it with an audio software like Audacity or something else, otherwise output as either .ac3 or .aac) -slowdown

After eac3to slowdown your file, what you need to do next is load up MKVToolnix and create a new MKV that's gonna be 23.976fps.
Load up both your slowed down audio file, as well the video you demuxed and, from the Timestamp/FPS dropdown settings menu select "23.976fps".

This is the "basic" procedure that has always worked flawlessly, for me, to have movies (both is SD as well in HD) to playback at their original framerate.

Let me know if you need further help!

That only works if the DVD has both incorrect pitch and speed, as discussed above (which to be fair, is vast majority of cases, but it's something to keep in mind).

(2026-01-12, 01:43 AM)velocity Wrote: That only works if the DVD has both incorrect pitch and speed, as discussed above (which to be fair, is vast majority of cases, but it's something to keep in mind).

Exactly.
It works only for movies.
For anything else, such as TV shows, family videos, old recordings, music concerts and videos, the pitch is already corrected.

(2026-01-12, 07:16 AM)emy54 Wrote: Exactly.
It works only for movies.
For anything else, such as TV shows, family videos, old recordings, music concerts and videos, the pitch is already corrected.

There are TV show DVDs which have incorrect pitch (any US TV show released in Europe). The others that you mention (and European TV shows) have a correct pitch *and* speed at 25 FPS.

(2026-01-12, 06:38 PM)velocity Wrote:

(2026-01-12, 07:16 AM)emy54 Wrote: Exactly.
It works only for movies.
For anything else, such as TV shows, family videos, old recordings, music concerts and videos, the pitch is already corrected.

There are TV show DVDs which have incorrect pitch (any US TV show released in Europe). The others that you mention (and European TV shows) have a correct pitch *and* speed at 25 FPS.

I actually didn't noticed any pitch shift with some US TV shows I have on DVD (House MD, The X-Files, Dawson's Creek).
Maybe they already "fixed" the pitch, or they only authored everything to 25fps.
Movies, on the other hand, i'm 100% sure they ALL have PAL Speed-Up (with the only exception being some actual European movies, where both the DVD as well the Blu-Ray sound the same). 
Anywho, most of the old TV shows have been remastered to HD, so I replaced the DVDs with the digital HD releases.