Do laptop dvd drives play in progressive scan?

or it is completely different from standard dvd players?

 

It's not quite the right question. Laptops are always progressive. If a DVD's content is progressive, than it is played as such (as long as the DVD is authored properly, but that is a whole different can of worms). If a DVD's content is interlaced, deinterlacing will happen either in the decoder or on the GPU. The drive itself isn't progressive, but the software or hardware decoder/player is necessarily (since computer monitors are all progressive) progressive.

 

so how do l know which dvd is progressive or not? like star wars or lord of the ring....

 

i was ignoring this thread because i wa unsure of the answer,, but i do believe sirmetman nailed it.......

the drive just pulls the data off the disk,,, if the disk is true progressive DVD,, then the decoder can play the data according to it's authoring type


very good info!!!!

later,
bigO

 

Look on the case for something that tells you the aspect ratio of the movie. Near there will often (but not always) be something that tells you if the DVD is progressive or not. Also, DVDs can have content that is mixed between interlaced and progressive. They often do things like put previews on interlaced and the feature on progressive. However, they don't always author properly, and in order to get certified as a DVDVideo branded disc, it only has to pass muster on an interlaced display, so unfortunately, you can't rely on discs. Your player will determine just how well DVDs will display in progressive.

 

so what u mean is that the movie itself alone is progressive because it is shot on film but those featurettes' or documentaries found as DVD extras, are interlaced because they have been filmed using TV cameras?

 

That's not exactly true either, heh. There are alot of factors at play. Any source content can be transformed in to any other, basically, before being put on disc. Basicly, companies try to maximize what they can pack on to a disc, so they put as much on in interlaced and compressed formats as they can get away with. If it is correctly encoded in progressive, or even incorrectly encoded but marketed as progressive, it is only so they can command a market premium.

 

l have just seen this:
http://www.avguide.com/products/product-32
what is the difference between this and normal pc watching dvd?

 

That looks like it is old old hardware, and to some extent a marketing gimmick. Most decoders that most people use on computers (especially on laptops) are software decoders.

 

just be curious but what does it mean "It is special because this chip provides direct progressive-scan video from film-source DVDs with no deinterlacing artifacts."?

 

Hi.

A similar question if you dont mind.

I have a full HD progressive camcorder 1920x1080, but when i play files on my pc with divx player it says the files are interlaced.

I only have a 1440x900 screen so it will not be running at full resolution, but does my system have to interlace it to play full hd files.

Thanks

EDIT : I tried gspot no information, my video files have the extension .MTS

John.

 

Look up deinterlacing. And deinterlacing artifacts. They are basically saying that thier hardware is a very good deinterlacer. And that it works well when taking material recorded at 24FPS (movies) and transcoded/transfered to 30FPS (like on a DVD) and playing it.

 

Tinderbox, it's not going to interlace your progressive content, that would just add even more overhead, as it would then have to re-deinterlace it in order to put it on screen. I'd check to make sure you are recording at the highest resolution setting. Your cam may be full HD capable, but that doesn't mean the default recording settings are full HD.

 

while i'm not certain,,
i have a feeling the answer is very similar,,

i'd bet that the DIVX format so commonly used to compress video is limited to playing in interlaced mode only because the interlacing virtually cuts file sizes in half... basically i'm saying that DIVX codecs may be limited to outputting video in interlaced mode only...

but this is all a guess,, and not based on real knowledge

later,
bigO

 

Most if not all encodings support either interlaced or progressive. Interlaced would be unsupported before progressive, because it is more difficult to do. I'm pretty sure it is a system setting issue.

 

Hi.

I have a Panasonic HDC-HS9

http://www.panasonic.co.uk/html/en_GB/476334/index.html

I am going to download the latest version of gspot and see what it say about the video files.

Any other suggestions appreciated.

thanks

John.

EDIT : gspot was no use, my files are in .MTS extention, the picture below was capture from nero vision 8.0

http://forum.notebookreview.com/attachment.php?attachmentid=19078&stc=1&d=1212096182

 

All commercial US (SD)DVD's are 480i native for US analog NTCS playback to use on older TV's. Remember 1st/2nd generations players did not have the progressive option.

For computer and HDTV you need hardware or software to provide progressive scan and as stated earlier, it's sort of marketing hype, of course you bought the best Yes, laptops play in progressive native mode.

This opens up heated debates on which is better, the player or the HDTV built in scaler/deinterlacer for SD-DVD

 

What's weird about your vid, Tinderbox, is that it is playing at 25FPS. Maybe it's because you have a euro model, but the HD spec says that it should be 24, 30, or 60 FPS, not 25. I've dug around on the net some. What video recording mode does the cam say it is in when you are using it? When recording, check the upper left corner. You should see a HA, HG, HX, or HE.

 

This is not strictly true. The DVD spec allows for video to be encoded in progressive; each frame has a flag that can be set to tell the player if it is progressive or not, as well as other flags to handle things like 3:2 pulldown. There are native progressive DVDs, but many DVDs that are supposed to be progressive are misauthored anyway. Same with interlaced content that is misflagged. These flagging issues causes alot of the deinterlacing artifacts that happen.

Oh yeah, and they aren't exactly standard 480 either. They are 720X480, which is neither SD nor wide screen resolution, but somewhere in between. DVDs don't play with square pixels; they are actually played with pixels that are either tall (standard screen) or wide (wide screen) rectangles.

 

AVCHD video format? I think the 25fps is for the PAL video format for standard TV.

 

Yeah, that's why I said it might be due to his being a euro model. PAL50 interlaced plays at 25 FPS (like NTSC plays at 30 FPS interlaced). But the HD spec finally got rid of this archaic difference (originally due to europe having a 50Hz power grid while the US had 60Hz).

 

Huh, I just looked up AVCHD, and it does allow for 50Hz. Weird. HDTV spec does not, that's why I assumed it wouldn't either.

 

Here's a good comprehensive primer on how DVD playback works, especially as it relates to errors arising from bad authoring.

http://www.hometheaterhifi.com/volume_7_4/dvd-benchmark-part-5-progressive-10-2000.html

 

Hi.

looks like my camcorder will do 25 or 50fps

Regards

John.

http://forum.notebookreview.com/attachment.php?attachmentid=19091&stc=1&d=1212143613

 

Heh, that's not entirely true in their documentation. Films are either 24 or 30 FPS. But as I stated later, I looked up AVCHD format and saw it supported 25/50 FPS. Did you figure out which recording mode you were in?

 

Hi.

I tried recording with 25pDIGITAL CINEMA turned off, but nero vision still says the video is recoded at 25fps.

According to the manual it should be 50fps, I must be doing something wrong.

regards

John.

 

Did you find the H_ mode code?

 

Hi.

I have it set to the second highest bit-rate HG mode, 13 Mbps CBR

The highest is HA at 17 Mbps VBR

regards

John.

 

Try HA with cinema mode on.

 

Hi.

In HA or HG mode, I get progressive with 25pDIGITAL CINEMA tuned ON, It shows as interlaced when 25pDIGITAL CINEMA is turned off.

Everything plays at 25 fps

regards

john.

 

Oh, ok, well, I guess that solves it then?