MPEG Convertion

[mmponline]

We use many videos in CD presentations. When rendering the videos (captures with Video capture in DVD format), we have several problems.

Rendering to MPG1 or 2 doesn't strange things. The codec stays DVD. Only after converting the so called MPG1 file again, it shows the right codec. These files do not play on all PCs, however. Most just don't play, others play sound and not picture. This used to be a smooth process in older MSP versions. The behaviour between the MPG 1 and 2 files differ as well, but I can't trace a pattern.

How do I solve this problem?

Can you suggest other formats that will be compatible with most PCs? It's all Windows based, and vary from very few Windows 98, XP home and pro mostly.


Please help.

[Devil]

I'm sorry, but I have problems understanding what exactly you are trying to do. MPEG-2 files will not play on PCs unless you have a specific codec installed, usually by installing a DVD player software.

[mmponline]

Devil

As far as I know, MPG1 should play however, as most PCs have Windows Media Player (some version) on it. I tried to use MPG2, as MPG 1 conversions of MSP is giving problems.

I'd prefer MPG1, but it's not working when converted with MSP 8. As I said: Try to convert a Video - in my case Pal DVD codec- to MPG 1 - result: Stays Pal DVD. Only on second or 3rd try of "converted" file, it becomes a MPG1 codec.

This conversion was flawless in MSP7 and 6.

Stephan

[sjj1805]

Output as a WMV (Windows Media Video) file!

[Devil]

Remember MPEG-1 IS acceptable as a DVD format, so it will not convert to MPEG-2 when burning a DVD, unless it is out of spec or you force it to.

[mmponline]

I'm still struggling with this problem and are getting lots of complaints from the client:

1. WMV works fine, but the quality is bad. The software I use, only inserts WMV in a Media pLayer interface (thus it can't be put in as a plain standalone video. The client wants it to be standalone.
2. In Version 6 and 7 I converted any file (avi or mpg) to MPG1 and it played on ALL PCs.
3. MSP 8 does not convert to MPG1 the first time (???) After a second or third try, the file will have the MPG1 properties only. Still only plays on some PCs
4. Why would MPG1 play on certain PCs only?
My MPG properties:
MPG-1 100% quality, no I frames ticked, Variable bitrate 6000 Kbps, Size 720 x 576, MPEG Audio.

PLEASE HELP!!!!!!

Stephan

[neonbob]

My MPG properties:
MPG-1 100% quality, no I frames ticked, Variable bitrate 6000 Kbps, Size 720 x 576, MPEG Audio.

PLEASE HELP!!!!!!

Stephan

Not sure I understand this... your resolution for mpeg1 is wrong... 720x576 is the PAL standard for mpeg2... The standards for mpeg1 are 160x112, 320x240, 352x240 (these are ntsc examples).

Computers are capable of working around standards if you have the right software, but stand alone players are quite strict with the dvd standards... Could this be your problem???

[GeorgeW]

My MPG properties:
MPG-1 100% quality, no I frames ticked, Variable bitrate 6000 Kbps, Size 720 x 576, MPEG Audio.

PLEASE HELP!!!!!!

Stephan

Not sure I understand this... your resolution for mpeg1 is wrong... 720x576 is the PAL standard for mpeg2... The standards for mpeg1 are 160x112, 320x240, 352x240 (these are ntsc examples).

Computers are capable of working around standards if you have the right software, but stand alone players are quite strict with the dvd standards... Could this be your problem???

Mpeg1 as a standalone video file can have full D1 resolution (and even higher). It's just when you are trying to create a specific type of disc (like a VCD) that will limit you to resolution/bitrate.

@mmponline,
I'm not sure why you cannot convert an mpeg2 to an mpeg1 using MSP8 -- I just tried it, and it worked fine the first time. Is it "Smart rendering" (which it shouldn't actually do during a change from mpeg2 to mpeg1), and are you looking under the compression tab, and changing "Media Type" to MPEG-1

Regards,
George

[neonbob]

Mpeg1 as a standalone video file can have full D1 resolution (and even higher). It's just when you are trying to create a specific type of disc (like a VCD) that will limit you to resolution/bitrate.



Regards,
George

Mmmm... didn't know that... I thought authentic vcd was restricted to 1/4 d1

thanks for clearing that up!

Edit... yeah... never mind I get it... he/she is trying to create a mpeg1 dvd. I see mpeg1 and instantly think VCD.

[Gorf]

Mpeg1 as a standalone video file can have full D1 resolution (and even higher). It's just when you are trying to create a specific type of disc (like a VCD) that will limit you to resolution/bitrate.



Regards,
George

Mmmm... didn't know that... I thought authentic vcd was restricted to 1/4 d1

You're right - it is - but George did actually say that too.

Incidentally, for ultra-low bitrate DVDs, MPEG-1 yields better results than MPEG-2 at the same bitrate.

[mmponline]

Just for clearing my needs:
I need to convert the captured MPG (PAL DVD) file to MPG1 so that I can use it in a Multi Media presentation. The presentation is on CD, and that is why I need it in MPG1 format - it needs to fit on CD and will play as a standalone video in a Multi Media Presentation. In the past, MSP 6 and 7 did these conversions to MPG1 without problems...

your resolution for mpeg1 is wrong... 720x576 is the PAL standard for mpeg2...

MSP allows this as a standard size (mormally it complains when using wrong size. Would this make a difference to playing, not playing on some PCs?

I'm not sure why you cannot convert an mpeg2 to an mpeg1 using MSP8 -- I just tried it, and it worked fine the first time.

I try to convert from PAL DVD. Same screen size, etc. and then get the problem that it stays PAL DVD after conversion.

Is it "Smart rendering" (which it shouldn't actually do during a change from mpeg2 to mpeg1), and are you looking under the compression tab, and changing "Media Type" to MPEG-1

I did not use smart rendering, as it tends to jerk on the transitions. Would this help to solve the problem? and if so, why? Know it might be technical, but would be interesting to know.

and yes, I selected MPEG-1 on the compression tab.

[neonbob]

your resolution for mpeg1 is wrong... 720x576 is the PAL standard for mpeg2...

MSP allows this as a standard size (mormally it complains when using wrong size. Would this make a difference to playing, not playing on some PCs?

Yeah...I sort of figured that's what you were trying to do, and my guess is yes, it will make a difference. You are trying to make a VCD, but you are not following the vcd standards. Like I said... if you have the programs to deal with non standard situations then there is no problem... MSP can doit, but it's an editor

But if you are trying to make a vcd that will play in any machine... then you will have to follow the standards.

[mmponline]

Can anyone furnish me with the ideal / correct standard to use...