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How to capture a photo off a dvd or a video file?
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olyteddy
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Joined: 15 Dec 2005
Location: United States
Post Posted: Apr 13, 2008 22:42 Posts Comp View users profile Send private message Reply with quote
hblackorby wrote:
Does anyone have any ideas about capturing full-res stills from a Blue-ray disc?


shill66 wrote:
One of my most popular websites is a gallery of screen captures. I've just begun buying Blu-ray discs and have an LG combo drive, and I need to find a way to get screen captures from Blu-ray discs. The basic question is how can it be done?

Seems to me the capturing options should be about the same as for regular DVD (print screen and crop, the little camera icon in Power DVD, etc.) but I could be wrong...

edDV
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Joined: 06 Mar 2004
Location: Northern California, USA
Post Posted: Apr 13, 2008 23:06 Posts Comp View users profile Send private message Reply with quote
Recent versions of VLC have an excellent frame grabber that follows deinterlace settings.
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mgh
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Joined: 12 Jan 2003
Location: India
Post Posted: Apr 14, 2008 09:38 Posts Comp View users profile Send private message Reply with quote
accidentally came across a one day free offer of Topaz Moment (like divx had some time ago)-downloaded and checked it out-allows use of some post processing and has a super resolution option while capturing-seems to be based on MPC-list price $39.99
I got it free-so i like it. Handles almost all formats.

hblackorby
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Joined: 13 Apr 2008
Location: United States
Post Posted: Apr 14, 2008 10:05 Posts Comp View users profile Send private message Reply with quote
PrintScreen and PowerDVD won't make a still capture at full resolution. They'll only capture at 72 DPI screen resolution. When playing regular DVD's, this isn't a problem. You can get a still capture through Blue-Ray through Print Screen, but it's at the lowest-resolution possible (72 dpi).

Blu-Ray is much higher than regular DVD's, and so I was hoping to get a higher resolution still capture. I think I'll try out Topaz Moment. It looks like it might do exactly what I want.

olyteddy wrote:

Seems to me the capturing options should be about the same as for regular DVD (print screen and crop, the little camera icon in Power DVD, etc.) but I could be wrong...

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Harold Blackorby
St. Louis, MO

edDV
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Joined: 06 Mar 2004
Location: Northern California, USA
Post Posted: Apr 14, 2008 10:40 Posts Comp View users profile Send private message Reply with quote
Here is a VLC cap from 1080i using single field quarter resolution 960x540 "discard" mode under "video" "deinterlace". You can cap at 1920x1080 using any of the other deinterlace methods.



Here is another off air cap at 1280x720p.



Click on picture for full resolution window.

VLC is very easy and versatile for screen cap. The only things it won't do are frame average or multiframe cap but those can be done in your editor.
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olyteddy
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Joined: 15 Dec 2005
Location: United States
Post Posted: Apr 14, 2008 21:41 Posts Comp View users profile Send private message Reply with quote
hblackorby wrote:
PrintScreen and PowerDVD won't make a still capture at full resolution. They'll only capture at 72 DPI screen resolution. When playing regular DVD's, this isn't a problem. You can get a still capture through Blue-Ray through Print Screen, but it's at the lowest-resolution possible (72 dpi).

Blu-Ray is much higher than regular DVD's, and so I was hoping to get a higher resolution still capture. I think I'll try out Topaz Moment. It looks like it might do exactly what I want.

olyteddy wrote:

Seems to me the capturing options should be about the same as for regular DVD (print screen and crop, the little camera icon in Power DVD, etc.) but I could be wrong...

PrintScreen will capture at whatever resolution the screen is displaying. If the screen is 640 X 480, that's what it captures. I just now pressed it and pasted the result in IrfanView and sure enough, it pasted 2304 X 800 (the combined resolution of my two side by side screens). Therefore, if you are displaying BlueRay at full resolution (whatever X 1080), the screen cap will be full resolution. Screens don't even have 'DPI'...Just dots.

hblackorby
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Joined: 13 Apr 2008
Location: United States
Post Posted: Apr 18, 2008 08:33 Posts Comp View users profile Send private message Reply with quote
olyteddy wrote:
Screens don't even have 'DPI'...Just dots.


Of course screens have DPI. It's related to the size of your monitor and your current resolution settings. If you have a 14.5" x 12" of actual screen space, and your resolution is 800 x 600, then your DPI is 55 DPI (dots per inch of monitor space). At 1024 resolution with 14.5" of screen space, your DPI is rougly 72 DPI. This is exactly why increasing your resolution makes everything smaller. The "dots" get smaller increasing your resolution and increasing your DPI. The Inch portion is your physical monitor size. And, because everything in the computer is related to pixels not true inches, everything (windows, text ,icons, images, etc) get smaller visibly.

In print, the Inch portion represents one inch of print space and how many dots got printed onto the paper in that inch. Monitor resolution is no different, except dots=pixels and pixel size can be dynamically adjusted with your resolution.
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Harold Blackorby
St. Louis, MO

olyteddy
Member


Joined: 15 Dec 2005
Location: United States
Post Posted: Apr 18, 2008 09:05 Posts Comp View users profile Send private message Reply with quote
Well yes, however the DPI of the screen is irrelevant to the capture. I should have said 'Sreen CAPTURES don't even have 'DPI'...'

rhymejerky
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Joined: 22 Mar 2008
Location: United States
Post Posted: Apr 19, 2008 12:41 Posts Comp View users profile Send private message Reply with quote
Hi, I have read through the thread and seems like image grabber 2 is the choice to capture screenshot for newbie. I have about 300 wmv files (about 60 mins each) that i need to capture a screenshot about every 10 mins. Is there a software that I can use to batch this instead of clicking/capturing 1 video at a time? How about a command line tool to does that? Also, for getting the exact length of a wmv file, I know media info does that, again.. is there a command line app that I can do that with?

Thanks a bunch

jmikeh
Member


Joined: 01 May 2003
Location: Indian Territory
Post Posted: Sep 21, 2008 15:43 Posts Comp View users profile Send private message Reply with quote
I thought I would add to this thread in that I hadn't seen mentioned that Media Player Classic does very good contact sheets. Starting with version 6.4.9.0, load a vid, goto file and click save thumbnails. The resulting save as screen is pretty self explanatory.

lordsmurf
Video Restorer


Joined: 10 Jun 2003
Location: Want my advice? PM me.
Post Posted: Sep 21, 2008 19:57 Posts Comp View users profile Send private message Reply with quote
You're mistaken.

BMP is an uncompressed image. JPEG is compressed.

The BMP is not worse than the JPEG, but neither is a JPEG necessarily worse than a BMP (if compressed well).
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ScorpBY
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Joined: 31 Jul 2008
Location: Europe
Post Posted: Apr 13, 2009 11:15 Posts Comp View users profile Send private message Reply with quote
Just wanted to say you can use Video Thumbnails Maker to make caps from your video.

shumaher
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Joined: 12 Jun 2009
Location: USA
Post Posted: Jun 12, 2009 05:40 Posts Comp View users profile Send private message Reply with quote
Dvd software like powerdvd has a screen shot abiltiy built in. For powerdvd there is a little camer icon that will save it to .bmp format.

You are in breach of the forum rules and are being issued with a formal warning.
/ Moderator Baldrick

lordsmurf
Video Restorer


Joined: 10 Jun 2003
Location: Want my advice? PM me.
Post Posted: Jun 12, 2009 11:25 Posts Comp View users profile Send private message Reply with quote
shumaher wrote:
Dvd software like powerdvd has a screen shot abiltiy built in. For powerdvd there is a little camer icon that will save it to .bmp format.


Yeah, but it's all blurry and color is off.

Use VLC or VirtualDub for the best grab.
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leomileman
Member


Joined: 23 Oct 2009
Location: UK
Post Posted: Oct 23, 2009 08:33 Posts View users profile Send private message Reply with quote
BJ_M wrote:
NO , use media player classic, powerDVD , winDVD, or virtualdubMOD to capture a frame off a dvd ..

a basic screen shot? would you be using mac or windows?
http://guides.macrumors.com/Taking_Screenshots_in_Mac_OS_X - basic screen shots
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