Video Resoultion Question

Video Resoultion Question
Dear all,
I want to know that if i have a video can i using objective-c to detect the resolution of the video (4:3), (16:9)?
Thank You ALL

MOV file format with 2 resoultion (16:9 & 4:3)
Can i use objective-c to detect the video is base on which resoultion format?

Similar Messages

Just bought a 2tb external hard drive with the intention of moving my iPhoto data files on it. I have so much of my 500 gigs being used up by images and video. Questions: Will this foul up my iPhoto app? Do I need to point iPhoto to this new location?

Just bought a 2tb external hard drive with the intention of moving my iPhoto data files to it. I have so much of my 500 gigs being used up by images and video. Questions: Will this foul up my iPhoto app?
Do I need to point iPhoto to this new location?
Thanks!

Are you running a Managed or a Referenced Library?
A Managed Library, is the default setting, and iPhoto copies files into the iPhoto Library when Importing. The files are then stored in the Library package
A Referenced Library is when iPhoto is NOT copying the files into the iPhoto Library when importing because you made a change at iPhoto -> Preferences -> Advanced. (You unchecked the option to copy files into the Library on import) The files are then stored where ever you put them and not in the Library package. In this scenario you are responsible for the File Management.
Assuming a Managed Library:
Make sure the drive is formatted Mac OS Extended (Journaled)
1. Quit iPhoto
2. Copy the iPhoto Library from your Pictures Folder to the External Disk.
3. Hold down the option (or alt) key while launching iPhoto. From the resulting menu select 'Choose Library' and navigate to the new location. From that point on this will be the default location of your library.
4. Test the library and when you're sure all is well, trash the one on your internal HD to free up space.
Regards
TD

Using You Tube video clips question:

After importing several clips from You Tube (of varying quality) to incorporate into an editing project, the clips look okay and play full screen, in the "source" window, but when I put them in the timeline and play them in the "program" window, they are thumbnail size. Why does this happen? I tried converting...but still no luck.

JSS1138 wrote:
Re: Using You Tube video clips question:
The short answer here is, don't. (Assuming that if it was yours in the first place, you'd have the original and not have to use the upload.)
And Bill, you should know better than to help someone violate copyright law.
yeah, i beg to differ on this. i have 100s of videos on youtube i did back when it first started before i saved my finished projects... (from 2005-2008 i would just record, edit, post, delete, because it was just random junk of me hanging out with friends, or just v-logging about stuff i needed to blow steam about) so one of these days i'll have to go through and download them and burn them for archives. Never say never

External preview display via. Mini-DVI to video adapter QUESTION

Hello, I have been browsing this forum for a while, and this is my first question.
I have a Macbook Core2duo running Final Cut Pro. I purchased a Mini-DVI to S-video/composite video adapter.
I cannot get my work to preview on this external monitor. I would like to view the canvas on the monitor while working. I had this setup at school on a G5, but I cannot get it to work on my macbook. The only way apple suggests doing this is by setting up a camera via. firewire and then run from the camera to the NTSC video display (television). I would just like to do it via. mini-dvi to my television for previewing.
Any help is greatly appreciated. Thank you,
Morgan Bressler

From what I've been told, using the computer's video output isn't outputting a true NTSC picture. I was told when talking about how the Macbook Pros dropped the S-vdieo port that I shouldn't use that anyways, but rather to go the firewire route. THat was actually converts the video source to true NTSC instead of taking a computer output to a TV. While I have no doubt that it works, I'm willing to bet that you'll see a noticeable difference between the G5 S-video and your MB using firewire. Most consumer camcorders from the past several years do digital (firewire) to analogue (NTSC) conversion, so you probably don't even need a new box.
-Brian

DVI to Component Video - Compatibility Question

Hello, everyone. I am in a pickle with my soon to be new Mac Mini, concerning the issue of hooking it up to a TV for use as a monitor.
My problem is thus: The TV is a 26" LCD with only a maximum of a Component Video input (no VGA or HDMI), and the Mini has only DVI out. I have seen a cable and/or adapter on the internet that converts DVI to Component, but there is a warning that says the DVI port must support it, or the graphics card must support it. I am wondering if anyone knew if this would work with the Mac Mini. My only other alternative is to use the DVI to Video adapter with S-Video, which on the 1368x768 TV would be inferior. I would prefer component, but am unsure if it would even work because Apple's Tech Specs on the Mini lists only DVI to VGA conversion or the S-Video/Composite adapter, and does not specifically say if it supports Component.
Any support would be GREATLY appreciated, as I have been up for three hours into the wee hours researching all the aspects of my problem, and am unable to figure it out. THANK YOU!
Duncan
EDIT: Here is a link to the adapter: http://sewelldirect.com/dvivideoadapter.asp
And cable: http://sewelldirect.com/DVI-to-Component-Adapter-Cable-6ft.asp
That way you can see what I mean about that cryptic warning. All I need to know is if the Mac Mini can support that sucker! Thanks again!

Our local video "expert" is BSteely, and hopefully he will weigh in on your question.
Some posts of his from the past, which may relate:
http://discussions.apple.com/message.jspa?messageID=5458457#5458457
http://discussions.apple.com/thread.jspa?messageID=5537321&#5537321
The impression I get is that you might need a more expensive adapter to convert DVI to component.
BTW can you give us the model number of your LCD TV? Thanks!
AppleTV is probably better suited for a component-only TV, though the Mini can certainly do a good job when the TV does have digital or VGA inputs.

Apple Video Adapter question

http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wo/StoreReentry. wo?productLearnMore=M9109G%2FA
I know this product works on our network providing an information service via a cable connection to TVs throughout the building, from a 1.25Ghz eMac.
My questions, however, are: Can I connect an 1.25GHz eMac directly to a single TV using a composite video cable or only via the s-video port. If a composite cable connection works what has to be done to tune the TV in to the eMac output?
If S-video is the way to go... are there any recommendations/restrictions with regard to cable length?
Hope I'm making sense (and that I have posted to the correct forum).
Thanks in advance.

If the TV has a S-Video connector, use it. It will give a sharper picture than composite video. If all you have is composite, use that. The TV should have an input selector to choose S-Video or composite. If the set has no video input you will need a RF modulator to convert the S-video or composite video to RF to feed into the TV's antenna input.

Video transfer question for older mac 10.5.8

I am trying to figure out how to transfer video from my JVC GR-D770U video camera to my PowerPC G5 running 10.5.8. I have the proper firewire cable but have been unable to find answer for my question on the internet that is specific to my situation.

docone wrote:
I am trying to figure out how to transfer video from my JVC GR-D770U video camera to my PowerPC G5 running 10.5.8. I have the proper firewire cable but have been unable to find answer for my question on the internet that is specific to my situation.
... I dont have iMovie and cant find a version that works with my older OS.
The camera videos are on a Digital Video Cassette tape, not a card.
Use iMovie with your Firewire (IEEE 1394) connected mini DV camcorder.
iMovie 6 HD is part of iLife '06, works great with older miniDV camcorders,
and is compatible with your Mac OS X 10.5.8. You will need to install
iMovie '06 before you can use the downloadable latest update from the link.
If you cannot find it locally, this old version is available on-line, including Amazon.com.
Message was edited by: EZ Jim
Mac OSX 10.9.3

Considering a refurbished 24" Imac ... video card question?

I've been a lifelong Microhell Winblows user and am finally ready to move over to an Apple. I don't have a lot of money to drop on a Mac Pro with a separate screen so I've been thinking either a 20" or 24" iMac. Then, of course, bumping it to 4 gigs of RAM. My question is the video card. I occassionally play with Photoshop and Illustrator (for web site design). I watch DVDs and play some games.
My question is whether it is possible (or even necessary) to upgrade the 256 MB video card to a 512 in the iMac 24" (or 20") model? This is the one I am looking at now: http://store.apple.com/1-800-MY-APPLE/WebObjects/AppleStore.woa/wa/RSLID?nplm=FA 878LL/A
Any idea's? Issues? Things I should be concerned with? I will be adding on the 3 year AppleCare plan.
Thanks in advance for any all help you can give.

OK. One more question (if you don't mind). They are not made to be user upgradeable. I'm ok with that. Do you know if the motherboard and/or system will accept a larger video card if I have it done by an Apple technician?
Thanks again.

Receiving New iMac Free - Video Card Question

Much to my relief, Apple is replacing my 2008 24" iMac after I have brought it in to them 3 times for the same issue in a month (failure to startup, they have replaced two video cards, one MLB, and the display but the problem repeats itself within 1-2 weeks). They are replacing it with a newer model that has a 27" display, twice the ram (4 GB) and twice the HD space (1 TB). My question is about the video card in the new iMac, it is a ATI Radeon HD 4670 with 256 MB, and the card in my old iMac was a NVIDIA 8800 GS with 512 MB. My primary application for my iMac is gaming, which I believe makes the video card the most important component. Does anyone know the difference between 256 and 512 or anything about this new card? Should I ask them if I can pay to upgrade to the Radeon HD 4850 512 MB before I go in to pick up my new iMac?

crazy00eyes wrote:
Much to my relief, Apple is replacing my 2008 24" iMac after I have brought it in to them 3 times for the same issue in a month (failure to startup, they have replaced two video cards, one MLB, and the display but the problem repeats itself within 1-2 weeks). They are replacing it with a newer model that has a 27" display, twice the ram (4 GB) and twice the HD space (1 TB). My question is about the video card in the new iMac, it is a ATI Radeon HD 4670 with 256 MB, and the card in my old iMac was a NVIDIA 8800 GS with 512 MB. My primary application for my iMac is gaming, which I believe makes the video card the most important component. Does anyone know the difference between 256 and 512 or anything about this new card? Should I ask them if I can pay to upgrade to the Radeon HD 4850 512 MB before I go in to pick up my new iMac?
Hi Crazy,
I had the exact same problem... my 18month old 24" iMac (with 512MB Video card) went belly up.
I pointed out that what they wanted to offer me had only the 256Mb Card ? ....and he said; "oops I didn't notice that"... so we will send your new 27" iMac - with a 512MB (ATI 4850) at no charge,
So... buddy you just need to tell them - and they will configure your replacement 27" to equal or better the minimum specification of your faulty unit.

IChat video conference question?

I have a couple of and maybe some dumb questions.
I manage a small office with 3 Dell desktop windows XP Pro computers and 2 Macs (1-iMac 1000GHz & 1-Powerbook G4 1000GHz, both 10.4.8) and one Savin Office scanner/copy machine. The one Windows XP computer works as the server for the Savin copier. All are assigned static IP addresses. I'm presently running a Linksys wireless router WRT54G. We have several other seperate locations associated with the business where we would like to be able to video conference with iChat.
I use to be able to iChat (video & audio) with the office computers for about a year and a half from my office but after changing the Linksys router from an older non-wireless version to the newer wireless version WRT-54G vers. 5, I can no longer Video or Audio iChat with the office on either of the 2 Macs listed above (text chating is no problem). The 2 office computers can no longer Video or Audio iChat with any other locations any where (but they can within the office, machine to machine). After exhaustive research, I'm convinced it is the Router.
I was thinking of getting the new Airport Extreme base station with N, that Apple is now advertising, to see if this works. My first question is, will it work with the Savin Office copier/scanner like the Linksys does? Is it any different in setting up than say the Linksys?
Is this more of a HOME piece of equipment or can I really use it in an office setting that is truely cross platform. (all computers file share with each other, particularly with the one XP machine that is the server for the Savin scanner.)
Will I have any problems at all with iChat.
I know there are a lot of questions but I really don't want to spend the money and disrupt the office if there is any anticipation of problems.
The business is a Day Care Center with 9 locations so the Video & Audio chat is important to the kids and the office personnel.
If this will work flawlessly, I would go ahead and replace the 10 routers for the 10 different centers we have, so everyone can Video & Audio iChat.
Thanks for your help.
Jim

I use to be able to iChat (video & audio) with the office computers for about a year and a half from my office but after changing the Linksys router from an older non-wireless version to the newer wireless version WRT-54G vers. 5, I can no longer Video or Audio iChat with the office on either of the 2 Macs listed above (text chating is no problem). The 2 office computers can no longer Video or Audio iChat with any other locations any where (but they can within the office, machine to machine). After exhaustive research, I'm convinced it is the Router.
Might it be that you just don't have the proper ports opened on the Linksys router to allow for both the audio & video portions of iChat? The following site is a great tool in setting up ports for specific routers, including your Linksys: http://portforward.com/default.htm
I was thinking of getting the new Airport Extreme base station with N, that Apple is now advertising, to see if this works. My first question is, will it work with the Savin Office copier/scanner like the Linksys does? Is it any different in setting up than say the Linksys?
I am assuming that your Savin copier is Ethernet-enabled. Since the new AirPort Extreme Base Station (AEBS) provides three Ethernet LAN ports, it should function similiarly to the Linksys to provide network access to the Savin. Since it a different device, there will be differences on setup. For example, the previous AirPort base station relied on the AirPort utilities for setup...and not a web-based one like the Linksys do. This is expected to be the same for the new model.
Is this more of a HOME piece of equipment or can I really use it in an office setting that is truely cross platform. (all computers file share with each other, particularly with the one XP machine that is the server for the Savin scanner.)
I would treat the AEBS no different than your current Linksys. Would you consider the Linksys a "HOME" piece of equipment? The AEBS should fit in quite well in a business environment as it does in a home one.
Will I have any problems at all with iChat.
As long as you have the proper ports opened on BOTH your hardware AND software firewalls, should shoudn't have any problems with iChat.

HD video newbie question related to camera shooting mode

Hi everyone
I apologize in advance as this has been covered (sort of) but I cannot definitively answer my question reading other posts so perhaps your answers will clarify this for myself and future interested parties.
I am ready to purchase a Canon HF S100 VIXIA camcorder after looking at a lot of reviews.
I have iMovie9 and will be using this exclusively (I hope?)
I am aware that if I edit anything or add transitions or image stabilization the video will be downgraded to SD, this is not related to my topic.
Questions follow
The camera supports 24p Cinema mode and 30p mode. Both of these shoot at 24 or 30 frames per second in HD using 60i which I presume means that each progressive frame is encoded in two sequential interlaced frames which must be combined (or something like that). I would like to use this mode as it has much better low light performance and I have a lot of indoor use, BUT---
Will iMovie9 support this and display the video as a HD progressive scan frame or will it discard this information and keep it as 60i or fail or something else?
Thanks for your help.

Lionden wrote:
.. 1080/60i - recordings made with the PF24, PF30 frame rate are converted and recorded on the memory as 60i
afaik, most (all?) consumer camcorders, claiming '24p' (or Cinema or...), scale on export (or record) to 60i ..
for me, this '24p' is mostly marketing... 24fps is a historic 'standard' for film/celluloid. in times, when displays claim 200fps, .. why 24? why not simple 29.97/30p (or here: 25)...?

IChat Video noob question- Help!

Hi, I've scoured this forum for answers and I just can't find anything (maybe my question is just too asinine).
So, my stuff:
I have both an AIM and my Google talk accounts set up on iChat 4.
On my home network there is a PC and this macbook Pro (Leopard 10.5.3) connecting to a Linksys Wireless-B router model BEFW11S4 v.4. DHCP is set to "Disable".
I run Peerguardian but have allowed every port that iChat has requested.
Oh, and I have Comcast (just typing that is painful).
The PROBLEM:
I'm trying to video chat with a friend who is running Tiger on an iMac and has iChat 3. He is connected directly to the internet. When I log in to either account or both there is no option for video chat(that is, the video, phone and share screen icons are blacked out) by either of his names, in AIM or Jabber. No option to invite for video chat.
Only one of my Jabber buddies has this option not blacked out in the buddy list.
I'm assuming there is something wrong on his end, but we both walked through our settings over the phone.
Is this his problem, my problem, BOTH of our problems?

At both ends the Item that says Camera Enabled and Microphone Enabled in the Video menu of iChat should both be ticked.
In the View menu the Show Status items for both Video and Audio need to to be ticked.
Can you confirm those first please.
9:44 PM Thursday; June 19, 2008

Gah! Another Mac -- PC Video Chat question

Diagnosing the following:
A = AIM 6.8, Windows XP
B = iChat 4.0.5 (608)
C = iChat 4.0.7
A <--> B no problems video chat
B <--> C " "
A <--> C argh!
No connection can be established between A & C. As a quick work-around, C downloaded AIM 6.8 for PC onto a virtual PC (is that what it's called when a Mac runs Windows?). Then, A --> C video & audio, and A <-- C audio only, no video.
A downloaded AIM 5.9. Still no connection established with C.
Thanks in advance for your assistance.
-BW

HI,
EZ Jim (Another Level 4) once ran a Blog on iSight of which I now have a copy and keep somewhat updated.
The Page on this topic is Here
It contains the Quote that is linked to Above (In the "Welcome to Apple Discussions" post)
The whole page dates back to iChat 2 and using AIM 5.5 and AIM 5.9 in some cases.
At one time EZ Jim and I were answering a lot of Posts with "What If your Girlfriend Lives a Long Way Away" sorts of Questions.
This page contains two posts that have been somewhat edited to show Updates.
The first is from EZ Jim and covers all the things that should be done (although somewhat from an iChat 3ish starting point to AIM 5.9(ish) on XP)
The Second post is by another former Regular Poster, James A.Weston who posted on how to allow non Microsoft apps through the then new XP Service Pack 2 Firewall.
It now contains updates to refer to AIM 6.x
I run XP in Boot Camp.
I have a version of AIM for PCs at version 6.1
For me this works.
For my view point the AIM site then brought out AIM 6.5 next.
In the first link the EZ Jim page contains link to a site that you can download older versions of AIM for the PC from.
I have not tried some of these others.
Some I have not even seen posts here about either so I am not sure all were on General Release.
The Summary so far is.
Vista can only install an Version of AIM that uses the Real Time Codecs (AIM 6.5 and AIM 6.8 as far as we can tell)
The Real Time Codecs will not allow these versions of AIM to Video chat with Older versions of AIM (5.5 and 5.9 for certain) - or iChat on a Mac or Trillian (An AIM client for PCs) that all use the same or compatible codecs from the AIM 5.5 to AIM 5.9 (iChat 2,3 and 4)
Other Options.
This pages state a list of apps subdivided into various groups based on function.
Other Applictaions
The Panel on the left lists the items/apps
The Panel on the right give a bit more info
For Example 1-3 are text based only Third Party IM apps that in some case have Multiple service capabilities
4 Is AIM for Mac on its Own
5 through 8 are other apps that can video and need both ends to get their own Versions (Cross Platform Apps)
9 through 12 are Web browser base sites that do Video Chat by Allowing Flash access to the Camera (It is effectively a Cross Platform Solution)
13 Specifically mentions Trillian as an Alternative to PC users.
I have not heard whether this can be installed on Vista.
Triilian does for PC users what AdiumX and ProteusX do for Macs but does Video chats with the various services as well. (although not cross service chats (MSN to Jabber say) )
14 and 15 are the closest anyone has got to doing Video (No Audio) to an MSN Buddy.
Summary of Other Options.
It is a question of Cross Platform Apps or Web browser based options.
(Unfortunately NOT iChat)
In some areas of this I do not yet have complete info about things like Trillian on Vista for example.
Notes.
My G4/1Ghz Dual processor was bought in 2001 an came with Jaguar and OS 9 Installed.
It is currently running Leopard at 10.5.6
It will and does run PhotoShop CS.
This length of life it not likely to be found on PCs and therefore AIM may not have any real plans to get AIM 6.8+ to work with the Older versions of AIM, despite what the "What do I need for Real Time" message says.
So, Yes, I have some Info on this.
I hope this summary of what it contains helps
9:25 PM Wednesday; March 25, 2009
I must put in
I may receive some form of compensation, financial or otherwise, from my recommendation or link.

S-video port question

This is just a general knowledge question, but the S-video port on my pismo has more than the 4 holes and the rectangle connerctors there are seven holes and its weird. The S-video does work so there is no problems just wondered.

Chismar,
The S-Video port on my powerbook has 7 pin holes for the pins on the S-Video connector, so I guess I am missing something in your question.

Video levels question

Hello,
As a new Premiere CS6 user I'm a bit confused about the way it handles video levels when compared to Sony Vegas.
In Sony Vegas I'm used to 16 RGB being video black (0 IRE) and 235 RGB being video white (100 IRE). This is what I understand as studio levels which is the range most professional video cameras like my EX1 record in when properly exposed. During editing if I design a graphic either in Photoshop or Sony Vegas I input 16 RGB for pure black and 235 RGB for pure white. This graphic will display between 0-100IRE on the waveform monitor. I keep my entire color correction workflow within this range (16-235 RGB / 0-100 IRE) and the resulting videos look proper on youtube (since the youtube player stretches the video out to full RGB levels during playback) and DVDs since the player seems to also expect studio levels (16-235 RGB).
In Premiere however certain things appear to work differently. Video seems to be handled in the same way as in Sony Vegas. I came to this conclusion by comparing the same EX1 clip in both programs and it displayed identical on the waveform monitors. However when I create a graphic in Photoshop or using the Premiere titler or solid color I find that I must use 0 RGB to get 0 IRE and 255 RGB to get 100 IRE on the Premiere waveform monitor.
So my question is should I create a white graphic as 235,235,235 or 255,255,255? Is Premiere actually converting my graphics to legal video levels automatically or is it just showing up falsely in the waveform monitor? Are there any pitfalls I need to be aware during exporting to stay in the legal video range of 16-235 RGB?
Also will there be video level differences on output when using native YUV effects vs. RGB effects like Colorista and Looks?
Many thanks, Marc

Ok, I think I figured it out. When I bring a full range (0-255) RGB photo or graphic into Premiere it maps the image to studio levels (16-235) automatically. In Sony Vegas it does not so you end up with superwhites and superblacks and have to do it manually. In Sony Vegas even the default video background (if you fade to black) is superblack so you have to put a solid color and set it to 16,16,16 RGB in order to stay within the studio Levels legal range. You have to be really careful about levels or they will be illegal and cause problems downstream.
When I make a graphic in Premiere I no longer need to worry about the graphic being 16-235 (studio levels) as I do in Sony Vegas. Premiere considers black as 0 RGB and white as 255 RGB. On output everything will be studio levels. I tested an upload of a H264 file exported from Premiere which had a white background of 235,235,235 and it was not full white on youtube. If I do the same from Sony Vegas it would be fully white.
Hopefully this will help someone in the future who migrates over to Premiere from Vegas or vice versa. I prefer the way Premiere handles things.

Video Resoultion Question

Similar Messages

Maybe you are looking for