23.976 to 24fps BluRay encode

[EuropeanMan]

I have my XYZ MOVIE BluRay...

It was originally @ 23.976. IS there any benefit to encoding it to 24fps? With THAT being said, IF there is any SLIGHT BENEFIT, how would I go about doing that?

Since the source is progressive, adding AssumeFPS(24) would be correct or no?

And since I've used that filter...should I use eac3to to get the DTS (core) to also re-encode that file to 24fps?

Thanks in advance.

I'd have thought that Blurays should be standard for 24fps...but I'm finding more & more that most BluRays are @ 23.976 which sucks IMHO. :(

[setarip_old]

Hi!I'm finding more & more that most BluRays are @ 23.976 which sucks IMHO.

Huh? What's the problem you're having with that framerate?

[EuropeanMan]

^ that isn't important...just giving an opinion...no offence sir.

Anyone else have an answer for my question please?

[Groucho2004]

^ that isn't important

That's where you're wrong. It is more or less the only sensible reply to your post.

There is no reason and/or benefit I can think of why you should convert 23.976 to 24.

[EuropeanMan]

^ Thank you...that's ALL I wanted to know :)

@Mods, you can close this thread please....or delete.

[Music Fan]

People who would like to change the framerate (accelerate or slow down keeping the same number of frames) of a progressive video for some reason have to know this : you don't have to re-encode the video, you can simply change the framerate in the header of the file.
For mp4, you can use Yamb, for MKV, MKVMerge, for avi, Virtual dub, ...
But the sound will have to be re-encoded to stay synchronized with the new length of the video.

[MrVideo]

I'd have thought that Blurays should be standard for 24fps...but I'm finding more & more that most BluRays are @ 23.976 which sucks IMHO. :(

You would think that, but unfortunately we are still stuck in NTSC legacy land, where people still send the output to the old analog TV and it will only handle the 23.976 being 2:3 pulldown converted to 29.97 for display on the TV.

I do think we will ever see true 24 fps Blu-rays.

[Music Fan]

I read several times on a forum that some Blu-rays were already in 24 fps.

[iSeries]

There are some in Europe. I'm from the UK and have come across a few. I guess because we don't have any 'NTSC legacy'.

[MrVideo]

There are some in Europe. I'm from the UK and have come across a few. I guess because we don't have any 'NTSC legacy'.

Yep, you definitely do not. When 24 fps material is sped up for 25 fps output to old analog monitors, it results in that infamous 4.1667% speed up. When 23.976 material sped up, it is 4.2709% :D

[Music Fan]

that infamous 4.1667% speed up.
Much better than the 3:2 pulldown stuttering !

[MrVideo]

Which is why I recode all 2:3 TV shows to 23.976 :D

[wadegot]

how can i recode a 1080i60hz blu ray to 1080i.23.976
without loosing the dtshd sound?
is there a consumer av receiver with a build in scaler
that can do this when playing the disc?

[Music Fan]

how can i recode a 1080i60hz blu ray to 1080i.23.976
You don't have to transform 60i to 23.976p, except if the source is a hard pulldowned movie, which is very rare. If it's on a Blu-ray, I guess it's not a movie, because movies on blu-ray are generally encoded in 23.976 hz, so you can let your video in 60hz.


without loosing the dtshd sound?
No problem, if you don't change de duration of the video, you don't have to re-encode the sound.


is there a consumer av receiver with a build in scaler that can do this when playing the disc?
Do what ?

[wadegot]

i have several region a bds in 1080i60hz.for example the canadian edition of the movie 15 minutes.no chance to
play it without the 60 hz stuttering.remove pulldown
works only with 480i 60 hz ntsc dvds,then i have a 24 p output on my screen.i can demux the bd und convert the picture stream to 24hz,but then the audio is out of sync.
when recoding the sound with eac3to and surcode i get
dts instead of dtshd.
i know that extern scalers like the dvdo can do what i want,so i asked if anyone knows a av receiver with a build in scaler,which gives me a 1080i 24 or 1080p24
output when playing a 1080i60 bd.

[MrVideo]

i can demux the bd und convert the picture stream to 24hz,but then the audio is out of sync.

Then you are doing it wrong or using the wrong tools. If you just slow it down to 24 fps, then you will have audio issues.

You must use tools that do reverse telecine to 23.976 fps from the 29.97 fps source, which will not change the time of the video.

[wadegot]

what tools can do this?i only know
tsmuxer and eac3to

[Music Fan]

Are you sure that your video is really in 60 hz and not in 23.976 hz ?
If it's a movie on a Blu-ray, it's probably in 23.976 hz.
In this case, you don't need to convert its frequency.
You can analyze your file with MediaInfo ;
http://mediainfo.sourceforge.net/en

[wadegot]

100% sure.i have about 10 canadian bds encoded
in 1080i.60.i also have some european bds encoded in 1080i.50.i can reencode them to 1080.24 without problems using clown bd,although i loose the dtshd sound when the sound is reencoded by surcode.

[MrVideo]

what tools can do this?i only know
tsmuxer and eac3to

DGDecNV (with a newer model Nvidia graphics card), AVISynth and x264 encoder.

The AVISynth toolset is what is used to reverse telecine the video and supply the 23.976 frames to the x264 encoder.

[MrVideo]

Are you sure that your video is really in 60 hz and not in 23.976 hz?

BTW, Hz is not normally used with regard to video frame rates, fps, or frames/sec is.

I looked up the back case image for that release and it really does say 1080i on the packaging.