13 replies to this topic

[Mariusz_M]

I have got m2ts files in NTSC standard to burn on Blu Ray. I would like to keep 29.97 fps and burn my Blu-Ray disk in NTSC. But no mater what I do the outcome is always the same. Blu Ray disk is always created in PAL (25fps).

Why is it happening?

How can I change it?

[sknis]

Mariusz_M, on 06 November 2011 - 10:37 AM, said:

I have got m2ts files in NTSC standard to burn on Blu Ray. I would like to keep 29.97 fps and burn my Blu-Ray disk in NTSC. But no mater what I do the outcome is always the same. Blu Ray disk is always created in PAL (25fps).

Why is it happening?

How can I change it?

Please explain what you are doing and what application you are using.  Are you trying to save the files to a blu-ray disc or burn a blu-ray disc playable on a blu-ray player (with menus)? It is my understanding that there is no such thing as blu-ray PAL.

[Mariusz_M]

I use myDVD to burn Blu Ray with menu. I live in England so for some reason myDVD creates PAL BLU RAYS. It means that every m2ts file on actuall BLU RAY is saved with 25 fps. So basically myDVD will always recompress source files to 25fps.

But I have just found a solution. All I have to do is to edit a myDVD project file with NOTEPAD and manually change the value TVStandard="2 (PAL)" to TVStandard="1 (NTSC)". Then myDVD does not recompress files any more. All source files which were in NTSC originally are saved on BLU RAY disk. I do not waste my time and do not end up with lower quality picture.

Does anyone know a better solution?

[gi7omy]

Blu Ray is a high definition output and the 25 fps 625 line standard doesn't apply here any more than the 30 fps 525 lines of the US TV standard

NTSC and PAL by the way ONLY refer to the chroma sub-carrier (the colour signal) and not to the actual video

Blu-Ray requires a digital (HDMI) output

[Mariusz_M]

Blu Ray has many substandards. You can for example have 24 fps, 25fps or 30fps (29.97 fps). So the fist one is cinematic standard for source files scanned by frame from the cinema film tape. The second one is for PAL source files. The third one is for source NTSC files. So for example if there is an old film released on BLU which was originally scanned from the cimena film tape it will probably be saved in 24 fps. If it was released before on DVD and all what is avaliable are the high resolution PAL or NTSC files it will be released in 25 fps or 30 fps.

NTSC and PAL standards were invented for broadcasting analog TV. But then they were used to record analog tv programmes and later on to digitally record the programmes. PAL is not only about number of lines. It is basically what people now call 50i. Picture is saved as 50 half frames. NTSC is 60i - 60 interlaced frames. Interlaced signal and half frames were invented to reduce radio band used for one TV channel back in analog tv times.

Over the years PAL and NTSC have evolved and they still exist even on BLU RAYS. Of course every BLU RAY player will play both standards. So why would you worry about them?

The problem starts when you record something on a digital device. Some of them allow you to choose between 25 fps and 30 fps. But many of them record in 30 fps (29.97) or 60 fps. Then to keep quality and avoid recompression the best way is to just record your BLU RAY in the same format as source files. And this is whay I have been trying to do.

So please... if you do not know the answer to my question just do not post anything in this topic. I do not need a lecture that there is no NTSC BLU or 30 fps BLU. There is and I can record them now. But I am just looking for an easier way which does not involve editing the project file in the text mode.

Edited by Mariusz_M, 07 November 2011 - 02:30 AM.

[gi7omy]

Perhaps you should go and check some basic facts

1: PAL and NTSC are NOTHING to do with frame count or line count - they are specifically CHROMA systems. The fact that people incorrectly think they are TV standards is irrelevant. The 25 and 30 frame rate systems existed long before either PAL or NTSC was developed

2: Blu-Ray authoring is a digital mode and doesn't need the phased alternate lines (of the PAL system) or the vector correction of the NTSC system

3: all optical media is digital output and not broadcast standard. Their output is an A/V signal fed to the receiver and not a UHF signal upconverted and fed via a length of co-ax so the chroma sub-system doesn't enter the equation

4: European analogue standard is actually 576i and US is 480i

[Mariusz_M]

I can see that discussion with you makes no sense.

Anyone else wants to share ideas HOW TO SOLVE the problem I described?

[cdanteek]

Quote

I have got m2ts files in NTSC standard to burn on Blu Ray. I would like to keep 29.97 fps

What are you using to see the frame rate from your m2ts files?

What is the source of your m2ts files?

I made a short BD in MyDVD and PowerDVD reports this.

I checked a commercial BD DVD in PowerDVD and it shows a frame rate of 23.00.

I'm in the US.

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[Mariusz_M]

Most of my m2ts are created with Sony Vegas Movie Studio Platinum 10.0. Some of the files are created with an old version of Adobe Premiere Elements (4.0) which was preinstalled on my SONY laptop. What is good about the program is that you can check details for any video file. So I just go into STREAMS folder on the BD disk and check m2ts files there.



In both cases I render my files as AVCHD in 1920x1080 with 29.97 fps (60i mode) as the source files from the camcorder are MOV 29.97 fps (H.264) and I want to avoid loosing quality.

[cdanteek]

Mariusz_M, on 08 November 2011 - 01:11 PM, said:

Most of my m2ts are created with Sony Vegas Movie Studio Platinum 10.0. Some of the files are created with an old version of Adobe Premiere Elements (4.0) which was preinstalled on my SONY laptop. What is good about the program is that you can check details for any video file. So I just go into STREAMS folder on the BD disk and check m2ts files there.



In both cases I render my files as AVCHD in 1920x1080 with 29.97 fps (60i mode) as the source files from the camcorder are MOV 29.97 fps (H.264) and I want to avoid loosing quality.

Try MyDVD, Blu-ray, project settings, same as original to a image file or disc..

Videowave can do what Sony and Adobe does under a 16.9 project, output, export as, Blu-ray Authoring, Blu-ray SP NTSC, seems to be what your looking for.. Or play with the settings under Purpose and Video File Quality.

 11-8-2011 6-18-56 PM.jpg   97.34K   0 downloads

[Mariusz_M]

I have already tried. No mater if I create or convert file in video wave to the 29.97 fps. When I record it on BLU it is 25 fps after recompression. I can manually change between TV mode by editting file. But for some reason there is no option in the program to do it. By default TVStandard="2 (PAL)" in every new project I create. So I can add any file but at the end it will be recompressed unless I edit the project file in text mode.

[cdanteek]

Mariusz_M, on 09 November 2011 - 11:40 PM, said:

I have already tried. No mater if I create or convert file in video wave to the 29.97 fps. When I record it on BLU it is 25 fps after recompression. I can manually change between TV mode by editting file. But for some reason there is no option in the program to do it. By default TVStandard="2 (PAL)" in every new project I create. So I can add any file but at the end it will be recompressed unless I edit the project file in text mode.

I can use or convert in Videowave output, export as, Blu-ray Authoring, Blu-ray SP NTSC and recreate the file you say you want.

Then load it in MyDVD, Blu-ray, project settings, same as original and get a 1920 x 1080, 29.97fps, 25Mbps Interlaced file or disc from MyDVD.

It works on my two systems with C2010, C2011, C2012!

[Mariusz_M]

So try now to create 25 fps files and record them same as original. Will they be automatically transcoded to 29.97 or stay as 25 fps? I am starting to think that the default value of TVStandard="2 (PAL)" was set up during the installation process as I installed Roxio in England.

[ggrussell]

Yes, MyDVD output is set to the Windows country origin when installed.  With an international community, would be a nice feature to be able to change that at will in MyDVD.  Could try changing your country in Windows and reinstalling.