Video rate advice

Would be a video rate of 1500kbps (with Handbrake) be good to see a movie on apple TV and a 42 inches plasma screen? Thanks for any help

I have a 32" screen...
The default bitrate when using the ATV preset on Handbrake is 2500kbps, which for a 2 hour movie is about 2+GB
I tweaked the bit rate ripping Raiders of the Lost Ark at 1000kbps then 1500kbps and finally at the default, 2500kbps. The 1500kbps was totally fine and saves you over a gig space. I think the final file size for Raiders at 1500kbps was 956 megs as opposed to 2.13BG for the default setting on Handbrake.
I watched the 2500kbps (Apple TV preset) vs the 1500kbps (custom) and unless you're a REAL CRAZY videophile you can't tell the difference. This may help you save some space. It's up to you in the end really.

Similar Messages

Array to Image at Video Rate

Hello,
I'm using Labview 2010 with SP1 (32-bit) on Windows 7 (64-bit) with NI-RIO 4.0 and a PCIe-7852R FPGA card. I've written a program for the FPGA card that acquires one line of an image (1024 values) from some custom hardware and puts the line into a target to host DMA FIFO. On the host I have a simple VI that reads all 1024 values from the FIFO. This happens continuously until the user presses a stop button. I'm getting one line, 1024 values, from the FIFO, about every millisecond but will eventually go faster. I would like to collect 1024 lines of 1024 elements per line and display it as an image. Using the obvious straight forward method I would concatenate 1024 arrays from the DMA FIFO and then update an Intensity Graph. Or, I would delete one line in an initialized 1024 by 1024 array, replace it with the line I've just acquired, and update the Intensity Graph after every line. Unfortunately employing either of these methods slows every thing down significantly. I've looked around for information about displaying data at video rate and have only found a couple threads that detail using the IMAQ package, which I have, to display from a camera that is supported by the IMAQ package. Unfortunately I am not using an off the shelf camera. How can I display array data as an image really fast? Any advice would be great.
Thanks.

The attached VI (LV2011) does about what you describe (I am using a U16 image as you did not mention what data type you were using).
Writing 1024 lines to the image takes ~65 ms on my dual-core, Windows XP, LV 2011 machine (not top of the line anymore by any stretch of the imagination).
Attachments:
Test Large Image.vi ‏40 KB

How can I display three images in video rate succession (60 Hz)?

For a structured illumination microscope application, I have developed a VI that creates three images and displays them in rapid succession (as fast as the loop will go) on a second monitor.
From the naked eye it's pretty apparent that the loop is not displaying the images at video rate. Is there a way (perhaps with some sort of buffer) to get them to display faster? Is WinShow simply not going to be fast enough, and if not, what's an alternative method of displaying the images? If it helps, the images need only be displayed once each (the loop was just for testing).
Also, what is a way to measure the frame rate output of the images?
(sorry for the sloppy code, new to LabView)
Thanks,
-T
Attachments:
illuminationpattern.vi ‏31 KB

Hello,
Why don't you try drawing one window, call IMAQ WindShow once outside of the loop, then redraw that window each iteration within the loop. Hopefully this stops the flutter of the window. You can build a 3 element array of the 3 IMAQ images then use an index array to alternate through which image you want to be redrawn into the single window. The constant calling of IMAQ WindShow seems messy.
Regards,
Isaac S.
Applications Engineer
National Instruments

Display images at video rate

Hello
I have NI PCI 1424 board and the NI PCI 1422 board. I a trying to acquire images from my custom imager and display them at a video rate. I am using IMAQ Acquire Grab as shown in one of the examples provided with LabVIEW. I am grabbing one frame at a time and looping infinitely so that I can get a continuous stream of frames. This is doing the job of displaying the images but I know I am not getting the full frame rate out of my sensor and it is tending to be rather slow (about 1-2 frames per second).
I am sure there would be other ways to do this. I just do not know how.
Any ideas?
Thanks

Hello Rami,
I have modified the LL Ring example to include frame rate estimation and attached that with this email. You will need LabVIEW 7.1 to open this example. I hope this helps you out. Have a nice day!
Regards,
Nipun M
Applications Engineer
National Instruments
Attachments:
LL Ring with FrameRate.vi ‏123 KB

Timeline won't render in Premiere Elements 12 (and music video editing advice)

I have a section of video I'm editing that won't render. I've read some similar threads but still have a question about how I can edit the clips to 'force' a render.
I'm running PE 12 on a Core i3 laptop running Windows 8, so not a huge amount of processing power. I don't have an orange line above the timeline over these clips and I understand PE has decided that it's already giving me the best possible preview quality and doesn't need to render this section. However, it's four quick edits in time to some music and when I preview it back my computer clearly can't process the video and audio fast enough because I get very jerky video so I can't verify that the cuts are perfectly aligned to the drum beats.
I've been exporting the whole four minutes just to review about five seconds of video in the middle to make sure it's synched, and this is getting really frustrating as I'm having to make frame by frame adjustments to improve the sync.
Is there anything I can do to each clip, like adjust an image setting, to force PE to give me an orange line and want to render this section?
Just as an aside to anyone who edits music video type clips - if you're making, say, four quick cuts to four drum beats in a bar, do you find the audio/visual sync works best if the cut is on the frame the drum beat attack starts on, or does it seem more natural if it's one or two frames after the initial attack so it's 'mid drum beat'? I'm tending to find just after the initial attack looks/sounds better for me - but maybe that's something to do with the delay in my PC processing the frame!
Thanks for any advice,
Chris.

Chris
Please excuse the questions, but I did not want to take anything for granted...are you sure that you are looking above the Timeline content for the render indicator line? Assuming that you are OK with that.....
Are the gray tabs of the Work Area Bar placed so that they span the entire content of the Timeline, including this five second content which you say cannot be rendered. Remember rendering does not fix problems, rather it is a preview that helps you to realize that a problem exists sooner than later. Consequently, please confirm if an orange line persists over that five second content even if you press the Render key above the Timeline.
Have you expanded the Timeline content to the maximum with the Zoom Out Zoom In Slider above the Timeline get the best look at the content on the Timeline in contrast to get the best possible preview in the Edit area monitor?
Have you gone to Edit Menu/Project Settings/General and set the Audio Display Format to Milliseconds if you are involved in audio edits?
Have you been nudging audio in sync with video using shortcuts, such as...
As you hold down the Alt key of the computer main keyboard, tap the left or right arrow key once (one tap = 1 frame nudge)
As you hold down the Shift+Alt keys of the computer main keyboard, tap the left or right arrow key once (one tap = 5 frames nudge)
I would suggest that exploration and experimentation are the best tools with which to work to achieve a specific effect for your specific
situation.
Please review and then let us know if any of the above targets your questions about your workflow.
Thank you.
ATR

24" 2008 iMac with busted video card, advice needed.

I have a 2008 24" iMac in which the video card is busted. The machine will turn on, get to the log in screen with no issues, however there is absolutely no video output to the screen.
I have attempted connecting it to an external monitor using mini DVI to VGA and a VGA cable, but the machine is not set to display to an external monitor.
Having the video card replaced will cost in the region of €300, an amount I'm reluctant to spend on a machine which is seven years old.
I have it backed up, so I'm really looking for advice to to how to wipe it so I can sell it on for parts, or other suggestions...

Your welcome, your new iMac likely does not have a Firewire port so you will need a Thunderbolt to Firewire adapter like:
http://store.apple.com/us/product/MD464ZM/A/apple-thunderbolt-to-firewire-adapte r?fnode=51
I noticed several available on E-Bay however where you decide to get one is totally up to you.

Six Spare Monitors...MacPro Video Card Advice?

Greetings,
I have six spare monitors (Dell 19" 4ea and Dell 24" 2ea) leftover from a PC and I would like to get some advice on MacPro video cards to conncect all six monitors to a single machine. When I had my PC, I purchased a single eVGA 9500 (two DVI video ports built-in) and two eVGA PCI cards (2 video ports each for four ports). Once installed, these cards worked flawlessly with the six monitors under Windows Vista and the Aero interface. The 9500 was $99.00 and the PCI video cards were around $50 each.
I currently have a late 2009 iMac i7 with an external display, but I find having two screens is somewhat limiting since I had six with my PC. I've enabled Spaces in Snow Leopard, but all the screen flipping gets on my nerves. I miss being able to dedicate a monitor to email, another to iTunes, another to the Calendar, another for web browsing, etc.
Unlike Wintel PCs, the selection of video cards seems to be limited and specialized for MacPros.
How would someone go about adding video cards to a MacPro to drive six monitors?
I've read that the older MacPro video cards aren't very good. My late 2009 iMac i7 has a Radeon 4850, and I've never had a single problem with it, so I would probably want something similar in my MacPro if that is possible.
I'm considering buying a used MacPro off eBay in the $1,000 to $1,500 price range. I'm planning on using the machine the same way I'm using my iMac today which consists of basic photo editing with iPhoto & Aperture and light video editing with iMovie.
Thank you,
Derrick

there is a similar discussion over here;
https://discussions.apple.com/thread/3319068?start=0&tstart=0
where these two pages are mentioned;
http://support.apple.com/kb/HT4279
http://support.apple.com/kb/TS3477
but you can add another (or more) card in a mac pro for more monitors.
yes, the choice in cards is limited.
some PC cards can be flashed, but with no garantees.
then there is USB, where you can add up to 4 monitors;
http://eshop.macsales.com/item/OWC/VIDU2DVIA/
http://eshop.macsales.com/item/NewerTech/VIDU2DVIA/
im using the owc one at the moment, it works fine.
there is also this discussion;
https://discussions.apple.com/thread/3317583?tstart=30
imagine, you hook up 6 monitors, activate 12 'spaces', that makes for 72 workspaces. Now youre cooking!

Video Rate Changes from Cinema Tools to Final Cut

I have a problem that exists on serveral levels. Hopefully I can explain:
1. I directed a concert shoot with eight cameras. All cameras were Panasonic DVX100A configured for 24p Advanced except one, which was a Panasonic SDX900 configured for 24p (which I later discovered was laid down with a 3:2 pulldown instead of a 2:3:3:2 advanced pulldown like the DVX100A cameras).
2. It was planned from the beginning to use the multiclip feature in FCP to edit the footage.
3. The tapes from each camera were captured from beginning to end—about an hour each tape, four tapes per camera—at full resolution, the pulldown was removed, and the clips were then recompressed to Photo JPEG EXCEPT the tapes from the SDX900.
4. When I finally figured out that the footage from the SDX900 used a 3:2 pulldown, I opened the captured clips in Cinema Tools and attempted to remove the pulldown. The problem I ran into there was that CT can't handle files larger than 9 GB. Each captured clip (four of them—one for each tape) ranged between 10 and 13 GB.
5. My solution to this was to open each clip in QuickTime Pro and split the clip in half, open each half in CT and remove the pulldown on the smaller files, then open the smaller halves in QT again and join them back together into a single clip.
6. When I open the new master clips in Cinema Tools and analyze them, the video/frame rate is 23.98 as expected. BUT, when I import the clips into Final Cut Pro, the video/frame rate is 29.97 and I can't understand why. If I try to do a pulldown removal (again) from FCP, it doesn't work—I get an error that it can't find a clip with a pulldown to remove (duh!).
Is this a bug, and is there any way to fix this and make it work? I need to make all of the assets available for my class at school.

I have a problem that exists on serveral levels. Hopefully I can explain:
1. I directed a concert shoot with eight cameras. All cameras were Panasonic DVX100A configured for 24p Advanced except one, which was a Panasonic SDX900 configured for 24p (which I later discovered was laid down with a 3:2 pulldown instead of a 2:3:3:2 advanced pulldown like the DVX100A cameras).
2. It was planned from the beginning to use the multiclip feature in FCP to edit the footage.
3. The tapes from each camera were captured from beginning to end—about an hour each tape, four tapes per camera—at full resolution, the pulldown was removed, and the clips were then recompressed to Photo JPEG EXCEPT the tapes from the SDX900.
4. When I finally figured out that the footage from the SDX900 used a 3:2 pulldown, I opened the captured clips in Cinema Tools and attempted to remove the pulldown. The problem I ran into there was that CT can't handle files larger than 9 GB. Each captured clip (four of them—one for each tape) ranged between 10 and 13 GB.
5. My solution to this was to open each clip in QuickTime Pro and split the clip in half, open each half in CT and remove the pulldown on the smaller files, then open the smaller halves in QT again and join them back together into a single clip.
6. When I open the new master clips in Cinema Tools and analyze them, the video/frame rate is 23.98 as expected. BUT, when I import the clips into Final Cut Pro, the video/frame rate is 29.97 and I can't understand why. If I try to do a pulldown removal (again) from FCP, it doesn't work—I get an error that it can't find a clip with a pulldown to remove (duh!).
Is this a bug, and is there any way to fix this and make it work? I need to make all of the assets available for my class at school.

Learning Shake. Video tutorial advice from a new user...

I am brand new to Shake and compositing. I've used Final Cut Pro for a few years and done simple compositing after doing FCP tutorials. Shake is tougher to learn thank FCP, so I've purchased some videos from Gnomon workshop and cmiVFX. I wouldn't consider this a formal review, but some beginning advice for newbies like me...
1. First, do the tutorials in the manual that come with Shake. They start off simple, and one could probably learn almost everything you need for general use of Shake (from a newbie, don't forget).
2. This excellent book... Apple Pro Training Series : Shake 4 (2nd Edition) (http://www.amazon.com/gp/product/0321256093/103-0705051-1275827?colid=1T8L28XGM0 5IS&coliid=I3MUD718LP9EP9&n=283155) will get you started as well. It comes with a DVD full of material to work with as well. Good money invested here.
When you're ready to start spending more money....
3. cmiVFX.com has a number of free tutorials http://www.cmivfx.com/tutorials.asp, some of them for Shake, some for other compositing programs. Check them out for inspiration and for technique examples. I purchased the Shake Training Series 1 Kit (http://www.cmivfx.com/productshakekit.asp) which was quite good. They lead you through a series of examples, showing how some of the major functions operate and how to start working with all those nodes. I had previously purchased Combustion 4, and cmiVFX's video for Sky Replacement for combustion was excellent. They also make one for Shake, and I wish I would have purchase that one instead, although I've never seen it. The downside on this video series is that it runs as a regular DVD, and you need DVD Player, or a typical DVD player to view them. So, these are low-res videos (TV resolution), and not Quicktime files on disc.
4. The Gnomon Workshop (http://www.thegnomonworkshop.com/index.html) has some excellent video tutorials. They're pretty technical, and not a good place to start unless you've got a background in visual effects or other compositing software. I think they're great, but I think the new user of Shake/compositing software should work on numbers 1-3 above. Don't get me wrong, this is a great resource, which would be in keeping with the image Gnomon Workshop gives of being an in-depth resource for serious computer graphics artists. I suspect the level of teaching in these videos would satisfy the higher level and more advanced users. These videos are Quicktime format, high resolution and very well done. Visual Effects Compositing Fundamentals (http://www.thegnomonworkshop.com/dvds/gja01.html) is US$49 for 4 hours of instruction. Great value for money. I've also found Shake: Color Correction and Layers US$59 (3 hours) (http://www.thegnomonworkshop.com/dvds/mli02.html) very good, as was Shake: Effective Keying Techniques US$59 (3 hours) (http://www.thegnomonworkshop.com/dvds/mli03.html).
Personally, I'd like to see some more video tutorials of some experienced users showing how they get things done. Maybe now's the time???
G4 Laptop Mac OS X (10.4.7) FCP 5, Shake 4.1, Lightwave 8.5, Trying to get it to work v. 0.1

Personally, I'd like to see some more video tutorials of some experienced users showing how they get things done. Maybe now's the time???
I asked a couple of the Shake users I know (like Capt Mench), if they would be able to for the site http://www.proapptips.com
they are working on them but they are a little on the busy side at the moment.
I will post when they are up
DAVE

Sync audio with video rate

i have captured video/audio through the deck that I have and it's rate is 48KHZ 16BIT and I have a audio file that is from the actual microphone. I want to sync these 2, but I can't seem to find the right way.
i've tried exporting the audio file in 48KHZ 16BIT and 24BIT and nothing, its still not synced. I don't know how else to do this. can someone please help me?

ok heres what i do... we have a youth tv show where this guy talks. we record the video from a canon AXH1. The audio is recorded from the camera but we do not use that audio. The audio from the mic he speaks on is recorded on a laptop using some audio program our audio guy uses. So what i do is align up the audio from the mic/laptop file with the audio from the camera so its synced....does that make sense?

Video Camera Advice

After purchasing a JVC Everio HD camcorder, I found out that hard way, that getting a hard drive camcorder to work with a Mac is not as easy as it sounds.
With that said, I want to find options that will make shooting, transferring, and editing video on my (mid 2011) Macbook Pro, as easy as possible.
I know that there are different converters out there, but from what I have read, they are time consuming and many times still don't help you accomplish what you are trying do.
What types of camcorders should I be looking for? I know there are many professional style cameras that will accomplish what I am looking to do, but they almost always start at about $1000 and go up from there. Some people have suggested that I buy a SVR camera because they all shoot video as well, but now I am concerned that I will run into the same transferring issues with a $700 SVR camera that will have run into with a $300 HD camcorder.
Any help that is given will be greatly appreciated. My wife is due to have our first child any day now and this video camera issue was unexpected and has suddenly become an unneeded point of stress. Oh, on a side note, I went to an Apple store yesterday and they gave me two suggestions.
1) Use an iPhone.
2) Come on these forums and ask...which is what I did.
That was the best they could do, as they weren't really familiar with this problem.
Thanks, in advance!
Jason

The following should help you decide what camera to replace the Everio with!
iMovie 11 - cameras supported:
http://help.apple.com/imovie/cameras/en/index.html?lang=en_US
iMovie 9 - cameras supported:
http://support.apple.com/kb/HT3290?viewlocale=en_US
iMovie 8 Camcorders supported:
http://support.apple.com/kb/HT1014
iMovie tutorials:
http://www.apple.com/ilife/tutorials/#imovie
and also this:
http://www.kenstone.net/fcp_homepage/imovie_09_stone.html

Macbook Pro struggling - Adding iMac for Photo/Video. Advice?

Hey everyone! I'm new around these parts.
Anyhow, I've been working as a photographer for some years now, and am just starting to dabble into film-making as well. In the past, I've used 6, then 12MP cameras. RAW files were roughly 25MB. Nothing too hard to deal with. Now, I have a Nikon D800. The RAW files from this beast are reaching 80MB. It's shooting uncompressed 4:2:2 1080p video. All of this computes to REALLY slow editing, and lots of lag. Especially with video.
I've really worked my 15" Macbook Pro to death, and I would like to add an iMac for my video and photo editing needs. Here are the current specs of my macbook:
2.0GHz Quad-core Intel Core i7
4GB 1333MHz DDR3 SDRAM - 2x2GB
500GB Serial ATA Drive @ 5400
8x Double-Layer SuperDrive
Here are the programs I frequent:
Adobe Photoshop CS5.5
Adobe Premiere Pro CS5.5
Adobe Audition CS5.5
Adobe After Effects CS5.5
Adobe Bridge CS5.5
Word 2007
Powerpoint 2007
Premiere and After Effects, as well as Audition at time, are generally open at the same time to take advantage of the dynamic link. So, my Macbook is seriously having trouble keeping up. It's taking me upwards of 45 seconds to render 30 frames of a single layer of video. That's just no good when you're working with a longer production. Rendering files has become something I have to do while I busy myself someplace else waiting for it to finish. It's become a serious issue.
So, knowing all that, what specs would you recommend for an iMac? A Mac Pro just isn't an option, financially, at this time. If you need to know any more information, I'd be happy to oblige.
Thanks so much in advance,
Mark

There's a difference of $20 between this 21":
2.7GHz Quad-Core Intel Core i5
8GB 1333MHz DDR3 SDRAM - 2x4GB
1TB Serial ATA Drive
AMD Radeon HD 6770M 512MB GDDR5
Apple Magic Mouse
Apple Keyboard with Numeric Keypad (English) & User's Guide
Apple Remote
And this 27":
2.8GHz Quad-Core Intel Core i7
8GB 1333MHz DDR3 SDRAM - 2x4GB
1TB Serial ATA Drive
AMD Radeon HD 6770M 512MB GDDR5
Apple Magic Mouse
Apple Keyboard with Numeric Keypad (English) & User's Guide
Apple Remote
So, not too much difference. Would you say the extra 0.1GHz will make enough difference to choose the 21" over the 27"? Sorry, I don't know much about terminology and specifics. That's why I come to you. I just know that the extra 6" will really come in handy for both my photo and video work.
Mark

Flash to Video expert advice needed

I am exporting flash 8 animation to video to be edited in
final cut. I have exported the file in the animation codec "full
quality" to a quicktime .mov file, I then imported it into final
cut and have found a jagged edges on the images and am wondering
what the proper sequence settings would be in final cut?
Would anyone know, any tips to avoid these jagged lines would
be most helpful.
Thank you.
dmc

Try exporting from Flash with NO codec. Thus raw frames.
Also make sure you are not viewing the video in FC at a
scaled size.

How to modify the video rate of a clip? HELP

I imported different videos for my FCP project. Almost all of them are in 25 fps but there are some that are in 29.97 fps and i see them with lines. How can i change this to 25?
Thanks.

I'll let someone else who has more time and patience than I answer that. I can't teach you how to use an application on a forum.

Video server advice

Hello,
I run a small multimedia organzation... just started up. I
create Flash audio slideshows incorporating video with photographs
that are 900x700 for the Internet. I assume when I export it, the
file will be a huge flv! The 'net playback quality is very
important to me ( I have a lot of still photographs I want in high
quality.) I don't want to put You Tube videos on my site.
Basically, what I'm asking, is, what are the cheapest dedicated
video servers out there to purchase online (I don't want to deal
with software/hardware)? Thanks so much!

Well if your looking for performance. You could get a Promise VTrak E-Class RAID with 32TB of storage, later on you can add more chassis to the raid for more storage space. The raid can be expanded up to 160TB. (80 drive bays, each drive 2 TB)
Using fiber you could attach the raid to an xServer or Mac Pro (running mac os x server). You'll probable want at least 8 or 16 GB of ram on the server.
The server can run a copy of final cut server. Witch makes it easer to work as a group. Mac OS X server, when properly configured, can also be used to create a VPN between both locations.
Final Cut Server will let editors check in/out specific parts of the documentaries. So the project lives on the server; instead of scattered over every ones computers. Part of this is you can pull down thumb nails versions of the video to work off of. Only when you do the final render do you download the HD version of the video.
If you want even better performance on the editing stations. you could also upgrade to Mac Pros. Mac Pros have upgrade slots witch you can use to add fiber networking. You could also use the upgrade slots to add a black magic real time HD capture card.
Or if you want to keep the imacs. you might want to hook the server to a switch by fiber, and have the imacs connected to the same switch by 1000-T
If you call apple i'm sure they'd be happy to help you figure this all out.
for info on Promise: http://www.promise.com/apple/
for mor info on final cut server: http://www.apple.com/finalcutserver/

Video rate advice

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