Monday, 17 September 2012

The Shocks and Knocks of Mobile Use with an older Macbook



 Whether you should use early A1181 Macbook in a vehicle and expose it to the heat and vibration hazards  this involves in Australia is moot. 

If you have a need to use the Macbook on road trips, make sure it is in padded bag when not use and that it is securely stored in the vehicle. 

In order to recharge the battery in the vehicle a 12volt DC power adapter will be required.
 Such units are made by after market suppliers.   The Hypershop sells what appears a decent model online. The unit is described as being suitable for all Macbook, Macbook Pro and Macbook Air models.  http://www.hypershop.com/HyperMac-Pure-DC-Car-Charger-for-MacBook-p/mbp-car.htm

Cheap units are sold on ebay by companies based in China and Hong Kong. These cost  about  $25.00. It is wise to buy the unit described as for the 60 Watt Macbook.  The Chinese unit I bought does work. However,  charging does not occur unless my vehicle engine is running. 

The Daily Trips to and from School or Uni
Students who need to travel to and from school or university need a sound and solid laptop.  Generally, the younger any laptop is, the better it will stand up to the heat and shock involved in education settings.  In a previous post I have covered my views on the reasons behind an aging laptop’s increasing vulnerability to failure.

Heat, vibration and the normal degradation of minute circuit components makes failure increasingly likely with age.  A macbook less than 12 months old is going to stand up to the rigors of educational and mobile use than a Macbook that  is 3 - 6 years old.

Buy the youngest model you can afford. And whatever you have, try to protect it from heat, vibration and shock as much as you can.  

The question to ask really is how long can I expect a laptop to remain reliable in normal use which involves daily travel, knocks and shocks?  I would say no more than 3-5 years from date of sale when new.

Many companies conduct reliability surveys. The following 2011 PC World survey provides some interesting reading.

The results in the above 2011 survey, where Apple Laptops led the field, are quite different from the 2009 survey results described here:
 “Apple's line of laptops ranked fourth in a multi-year reliability survey of nine notebook makers, according to a study of 30,000 portable computers published today by a company that provides after-sale warranties. …. Over a two-year period, slightly more than 10% of Apple laptops -- the company sells two lines, MacBook and MacBook Pro -- failed in some fashion, said SquareTrade. The projected failure rate of Apple's notebooks within three years, added SquareTrade, was 17.4%.” “While only 4.7% of all notebooks failed from a hardware malfunction in the first year of ownership, that more than doubled to 12.7% by the end of year two, and then leaped again to 20.4% by the time three years had passed. SquareTrade said that the increasingly high failure rate was no surprise. "Laptops have a high usage rate," said Tseng. "People leave them on all the time, and notebook components are sensitive to heat. Two, they're portable and take a lot of abuse. And three, they're more complex than most other consumer electronics devices."
The person on a budget who needs to buy a used laptop faces big risks. Projecting the reported failure rate for aging laptops beyond 3 years results in frightening rates of failure.

From the above, it can be seen that the idea of selling your Macbook and buying another new one when your Apple Care runs out has merit if you can afford the outlay.

If you have a good working A1181 Macbook, do all you can to protect it from heat, shock and vibration.  If you need the older A1181 to run important older software,  consider buying another laptop for mobile use. Leave the old one home. 

New Solid State Drives stand up to mobile use far better than conventional hard drives. Swapping your mobile laptop's hard drive for a solid state drive provides enhanced protection to your data from the threats posed by mobile and educational use.  

Next: Work arounds for failed displays, wonky airport cards and dead audio input/output ports in the A1181 Macbook. 



Sunday, 16 September 2012

Capturing Video from Analogue Sources


Budget A/V Capture Hardware

Introduction
I have NO experience capturing A/V from analogue sources under OSX 10.7 or 10.8. The following information is based upon my experience with USB analogue capture devices running under OSX 10.4, 10.5 and 10.6 and using iMovie as the editing software.   I believe that the cheaper devices described here work better with 10.4 and 10.5 than with later OSX versions. 

Before outlaying any money for any device or software, fully research the issues involved to see if the devices and software meet your needs and is compatible with your system.

The following is my opinion only  and may not be work for you!!

Alternatives to using  computer based video capture
An alternative to computer based video capture is the use of a domestic stand alone DVD recorder or hard drive  based device such as a PVR or other Hard Drive recorder. To do the job the device must have RCA and or S video INPUTS, (not just the usual outputs!!).  The analogue audio/video output source (such as the VCR) is connected to these  inputs. The resultant digital video capture can then be either burnt directly to DVD, stored on the digital recording device’s hard drive, or where the recorder is fitted with a usb port or Ethernet connection, transferred to the Mac for further editing, storage and burning to DVD. 

Having used an old MTX hard drive recorder and a Doma DVD recorder in the past, I can say this method is the simplest way of digitizing analogue video produced by a VCR.

Digital Movie Cameras fitted with “Analogue Pass Through”
Of course, if you have a digital Video camera with analogue pass through then, if the camera is supported by iMovie, your digitizing problems are solved. iMovie will directly import av from such devices if they are on the current supported list: http://help.apple.com/imovie/cameras/en/index.html?lang=en_US

The older Apple support  list for firewire DV cameras is now archived and not maintained by Apple.

If your camera does have “analogue pass through” then it will be fitted with RCA and /or S video INPUTS.  If it does not have these inputs, then you will not be able to capture analogue video from VCR etc with it. And, even if it does, if it is not on the Apple supported list, you will not be able to import the converted video directly into iMovie.

When the first DV iMacs were introduced,  a major selling point was DV editing via Digital camera fitted with Firewire.  Such cameras when fitted with “analogue pass through” were an important way to digitize analogue sources. At the time  such cameras were expensive. Cameras fitted with the extra  “Pass through” facility were more expensive than those without the facility.

Today,  these once expensive cameras may be cheap second hand, but the OSX versions and iMovie which can use them  are old.  And new Macs do not have firewire ports.  This is one reason why keeping old Macbooks alive may be  important for users of such Camera equipment. The older Macbook hardware and software are needed by older video devices.

The concept of “analogue video pass through”  via digital movie camera is discussed here: http://www.videohelp.com/dvanalog  

Capturing analogue video with a cheap usb to Mac capture device
Echo Fx markets software for Mac which enables a number of USB video/audio capture devices made for Windows to be used on Mac computers. The Echo FX website is here:


The quality of the recorded video depends very much on the settings used.  The smaller the size and the lower the frame rate, the less blurring of motion there will be. But the jerkier the movement will be. The smaller the recorded frame size, the lower the quality of the displayed video. These devices are a trade off. Though they work. 

Before purchasing  cheap usb av capture device on ebay or elsewhere, try to make sure that the device will work with versions of OSX later then 10.5. In the days before Lion and Mountain,  the requirement for “OSX 10.5 or greater” did not refer to 10.7 or 10.8. These two had not been released at that point. So compatibility with them is not guaranteed.

Roxio and some other companies for instance make capture devices which work only with OSX 10.4 and 10.5. AV Labs also made on such device.

Ezcap is a British company which markets the DC116 usb av capture device. As can be seen from the company website,  non genuine copies of the device has been a problem. Fake copies of this device can be found online.  The previous model (the DC 60+)  worked on macs via Echo FX software. The DC116 likewise works on Mac with Echo FX software.


The following are some examples of devices which are made for Mac and which come with their own software. They do not require Echo FX software:

Roxio (and some other companies) still make capture devices especially for Mac which work only with OSX 10.4 and 10.5. AV Labs also made one such device.


Jaycar Electronics stocks the K-World DVD Maker 2 which has Mac compatibility. It sells for just under $70.  The K-World site describes the unit: http://au.kworld-global.com/main/prod_in.aspx?mnuid=1320&modid=11&prodid=102&flag=1

This device uses Empia video capture hardware which is fundamentally the same as
Echo Fx software.  And this device is no improvement on the Ezcap DC116 in my opinion. Everthing is in the box though and you do not need to buy the software separately.   Jaycar sell a similar device which is not Mac compatible at all. When buying, ask the staff for the Mac compatible DVD Maker 2 usb device as listed in their catalogue.  This device requires “OSX 10.4.5 or above” . I have a strong feeling that this device will not be compatible with 10.6 or above. 

Apple Australia do sell a range of av capture devices.  The “Elgato Video Capture”and the “Elgato Turbo.264 HD”  both retail for just under $A200. The Elgato Eye TV Hybrid is both a TV tuner stick for Mac and an analogue a/v capture device. It sells for about $A280.

The Elgato US site lists a $99.95 video capture device : http://www.elgato.com/elgato/na/mainmenu/products/Video-Capture/product1.en.html  This device requires OSX 10.5.8 or later and is PAL compatible.   This device is not listed at the Australian Apple store; I have seen it stocked at stores such as JB HiFi.

It is clear that once you move away from devices which use Echo Fx software, the price rapidly increases, but the more expensive models do produce much better results.

I have an Elgato Eye TV Hybrid,  purchased from an independent electronics supplier. It does a good job in both its roles.   If you are happy to simply capture TV and analogue material to your hard drive the Elegato is very easy to and very reliable.   Elgato products are hardly “budget” compared to generic av capture devices available via eBay. But they well work on Macs.

If your intension is edit the captured material in iMovie,  then I have found that the captured material must be reformatted.  I use Roxio Toast to make a DVD image of the material, and convert the result using using MPG Streamslip (available for free at http://www.squared5.com/svideo/mpeg-streamclip-mac.html) and import the resultant DV into iMovie.  (iMovie will not import the Eye TV video directly. Nor can MPG streamslip convert it into a iMovie compatible format. I will cover Wondershare Video Convertor for Mac  shortly).

For Tiger, Leopard and Snow Leopard, and I think, Lion, you must have the Apple Mpeg2 Quicktime component loaded onto your machine.  Mountain Lion is said to have the Mpeg2 component as standard.  MPG Streamslip is available as a beta version for Mountain Lion at the moment.
The changes in iMovie have not all been good.
Editing in iMovie used to be easy. However, Wikipedia explains the complexities and problems which arose from Apple’s introduction of iMovie 08 as follows: “iMovie 08 was criticized due to its drastic abandonment of some iMovie HD 6 features. New York Times reviewer David Pogue said "iMovie ‘08 is an utter bafflement... incapable of the more sophisticated editing that the old iMovie made so enjoyable...All visual effects are gone — even basic options like slow motion, reverse motion, fast motion, and black-and-white. And you can’t have more than one project open at a time."[4]
Features removed included the classic timeline, the ability to create DVD chapter markers, support for plugins, and in-timeline audio adjustment and control. iMovie '08 imports to a much more limited set of video codecs and metadata formats than previous versions of iMovie or today's QuickTime Player. For example, QuickTime Player can be extended to support the FLIP Video 3ivx MPEG-4 codec, but iMovie '08 cannot. iMovie '08 also removed the ability to import DV footage. As a result, all resulting videos have lossy compression applied and there is no facility for managing full format video. The peculiar lack of QuickTime support means QuickTime Pro can edit a larger range of video than iMovie '08.
Apple released iMovie HD 6 as a free download to those who had purchased iMovie '08.[5] However, in response to the release of the subsequent newer version of iMovie '09, Apple removed the download in late January 2009[6] while also reducing the $299 price tag for Final Cut Express to $199. Several of the features removed from iMovie '08 that were previously included with iMovie HD 6 have been restored into iMovie '09 and, more recently, iMovie '11.” Source: Wikipedia, http://en.wikipedia.org/wiki/IMovie  Of course, the Quicktime player in Snow Leopard and later is but a shadow of the old Quicktime Pro.
Apple markets Final Cut Pro, which is described in detail by Wipedia here: http://en.wikipedia.org/wiki/Final_Cut_Pro  This software costs $319.99.

Not the solution if all you want to do is convert some old VHS tapes to DVD on your Mac.


Third Party video file reformatting and conversion
There is another solution to the problem of av import and editing on the Mac. The use of Third Party video conversion software.

I have found that the use  of inexpensive software made and marketed by Wondershare has solved my particular problems.

Wondershare Video Convertor for Mac  http://www.wondershare.com/pro/mac-video-converter.html  $US39

Wondershare  DVD Creator for Mac  $US49 http://www.wondershare.com/pro/mac-dvd-creator.html

These are cheap alternatives which will take many different formats and convert them into formats which iMovie can use

The Advantages of the A1181 Macbook
The provision of an audio in port on the A1181 Macbook is important.  A video capture device may work fine capturing video to a Mac, whereas it’s audio might not.  In this case, a separate  audio in cable from the video source device to the Macbook audio in port solves that particular audio problem.

Where a person’s av capture hardware and software works only with Tiger and Leopard, maintaining the now aging earlier editions of the A1181 Macbook model with a dual partition drive is important.  One may use the internet with maximum protection afforded by the latest OS, while at the same time gaining the use of hardware and software which are only compatible with earlier versions of OSX. 

This holds true for many versions of applications software. The general advice not to update your OSX until you ensure your important apps and peripheral devices work under the new OSX is good advice.

If you are going to upgrade, make a bootable clone of your current primary drive first, just in case you find one of your important applications or peripheral devices do not work under the new OSX.  You may have to revert to the old or partition your drive and run both versions of OSX and the applications software.  Updates and new versions have pluses and minuses.  

Before you buy an av capture device, do all you can to make sure that it works with your version of OSX.    Explore the Echo FX website before you buy a cheaper device originally made for Windows.

Generally the quality of the recorded video is proportional to the cost of the device.

The generic capture devices which cost under $50 are not good as the models which cost $100,  $200 or more. 

Maintaining an A1181 Macbook which runs Tiger or Leopard is important for those people who have av and other hardware which are not compatible with later versions of OSX.  The later the Macbook, the later its minimum OSX version will.  A 2006 – 2007 Macbook will boot from Tiger.  A 2009 Macbook will not.  When it comes time to buy a newer machines, you may have to find out the newer ways of doing things.

The usefulness of your older software and hardware depends upon the OSX version you are able to run.  If you can’t run the required OSX version on your machine, you can’t use the hardware which requires that software. Hardware is only part of the product.

As time passes, more and more Macs which require later versions of OSX will appear for sale on eBay and elsewhere. Fewer and fewer Macs which can boot from Tiger and Leopard will appear.

It is my view that recording av into a Mac was easier in the days of Tiger.  There were far fewer issues than there are under Snow Leopard and later when using cheap av capture devices. 

Whatever version of OSX you use during av capture and video editing,  explore the world of 3rd party video conversion and DVD creation software.  When it comes to reformatting video so that it works under iMovie, the 3rd party offerings  can offer a cost effective solution.  Downloading their trial versions will enable you to see whether they meet your needs or not.  

All of the suggested solutions here qualify as budget ones.  It is certainly true that a professional video camera with analogue pass through feeding into Final Cut Pro is the best way to go, but it is also more expensive than the methods, software and device models discussed here. 

The Apple site describes how to capture video direct to iMovie 11 from the inbuilt iSight camera camera here:  http://support.apple.com/kb/PH2155   . http://help.apple.com/imovie/cameras/en/index.html?lang=en_US  This will not perform the task of converting VCR video tape to a digital though.

Wednesday, 12 September 2012

Heat



The battery life of a laptop is a major marketing tool for manufacturers.  When laptops are designed, makers probably use every technique possible to maximize battery life.  The cooling fans fitted to laptops are probably set to cut in and run at speeds which meet both the competing requirements of adequate heat removal and maximum battery life.  The designed in fan cut in temperature and fan speeds are thus probably the result of  a compromise that works ok when the laptop is young and when it is used only within certain environmental conditions. 

Many people over the years have expressed the view that laptops would last longer if heat removal was improved by one means or another. For Mac computers and particularly Mac laptops, there is a program that allows the user to dial in a lower than standard fan cut in temperature and higher than standard fan speeds.

The program is called SMC Fan Control and is available here: http://www.eidac.de/

I use it all the time.  SMC Fan Control displays a temperature read out on the upper task bar. Even if you keep the fan cut in and speeds standard, you can see how hot your Mac is running.

People discuss their hot Macs in this forum thread: http://forums.macrumors.com/showthread.php?t=433732


While the Intel CPU is protected by a thermal cut out, the constant heat inside a laptop case impacts on the life of other components. Especially, in my opinion,  the tiny capacitors which pepper the circuit boards. As the fluid inside modern capacitors may be mildly corrosive,  the life of these capacitors is greatly shortened by hot environments. But that’s just my opinion.

Some suggestions for reducing the temperature of the Macbook are discussed here: http://timemanagement.cgpgrey.com/5-ways-to-cool-down-your-hot-macbook/

The Macbook is a plastic bodied machine.  The components inside the Macbook, including the logic board and heat sink, are attached to the plastic base by screws threaded into metal inserts inside plastic mounts. 

When plastic, even polycarbonate, gets hot, it becomes less rigid and more flexible.  Proper heat removal from the CPU depends upon the proper mounting of the heat to the CPU. Thermal grease, applied to the top of the CPU conducts heat from the CPU to the heat sink.  Briefly, the airflow caused by the fan  is supposed to adequately remove the heat from the heat sink.

If the heat sink is loose or if the thermal grease is old and inefficient, a macbook will run hot. And sometimes it will cut out. Its life span is being reduced by poor heat removal.

 If you have the Apple Macbook take apart and service manual you will be able to read the specified manner in which new thermal is applied. You will also see the specific manner in which the heat sink is secured to mounts and thus clamped to the top of the CPU. 

Apple does not release its service manuals to the public. They can be found at a few sites on the internet however.  Too much thermal grease is as bad as not enough. You must use the right sort of thermal grease. 

Here is IFixit’s guide to replacing thermal grease:


Please research this whole issue further before deciding on taking any action on your MacBook. If your heat sink is not loose and if the SMC temperature read out shows an idle temp of 40 – 50 degrees Celcius in a room temperature of about 25 degrees Celcius, I would do nothing.  But that is just my belief.  

Capacitors

Wikipedia reports the infamous period during which bad capacitors flooded the electronics supply chain in, particularly in years past:

“The capacitor plague (also known as bad capacitors or "bad caps")[1][2] is a problem with a large number of premature failures of aluminum electrolytic capacitors with non-solid or liquid electrolyte of certain brands, especially from some Taiwanese manufacturers.[3][4][5]

The first flawed capacitors were reported in 1999, but most of the affected capacitors failed in the early to mid 2000s. High failure rates occurred in various electronics equipment, particularly motherboards, video cards, compact fluorescent lamp ballasts, LCD monitors, and power supplies of personal computers. News of the failures (usually after a few years of use) forced many equipment manufacturers to repair the defects. The problem seems to be ongoing; faults were still being reported as of 2010.[6]….. Problems with "bad caps" have affected equipment manufactured up to at least 2007 and beyond.[9] Many well-known motherboard companies have unknowingly assembled and sold boards with faulty capacitors sourced from other manufacturers. Major vendors such as IBM, Intel, Dell, HP, Samsung, and Apple Inc. were affected.[7][10] Circa 2005, Dell spent some US$150 million replacing motherboards outright and another US$150 million on the logistics of determining whether a system was in need of replacement. HP reportedly purged its product line in 2004. The motherboards and power supplies in the Apple iMac G5[11] and some eMacs[12] were also affected.
While the capacitor plague has affected large numbers of desktop computers, the problem is by no means limited to that category. Bad capacitors can also be found in external power supply adaptors, network switches, audio equipment, flat panel displays, and a wide range of other devices. "Bad caps" can cause a simple failure to turn on, or a wide range of bizarre (often intermittent) behavior of afflicted electronic equipment……”

Visual symptoms 

Direct visual inspection is a common method of identifying capacitors which have failed because of bad electrolyte. Failed capacitors may show one or more of these visible symptoms:[8]
      Bulging or cracking of the vent on top of the capacitor. (The "vent" is shaped by an impression stamped into the top of the can, forming the seams of the vent. It is designed so that if the capacitor becomes pressurized it will split at the vent's seams, relieving the pressure rather than exploding.)
      Capacitor casing sitting crooked on the circuit board, as the bottom rubber plug is pushed out
      Electrolyte leaked onto the motherboard from the base of the capacitor or vented from the top, visible as crusty rust-like brown deposits. The petroleum-based adhesive that is sometimes used to secure the capacitors to the board can be confused with leaked electrolyte; electrolyte is usually wet, adhesive is dry. The glue is a thick elastic covering usually of a sandy yellow color, which darkens (towards black) with heat. A dark brown crust up the side of a capacitor is invariably glue, not electrolyte. The glue is itself sometimes harmful, and can corrode leads and tracks covered by it, causing leakage current or an open circuit; it is not required and can safely be removed. The presence of black-colored glue is a reliable sign that the capacitor has overheated, due either to internal failure or to inadequate ventilation.
      Detached or missing capacitor casing. Sometimes a failed capacitor will literally explode, ejecting its contents violently and shooting the casing off the circuit board. Grayish aluminum foil and shredded paper (the remnants of the capacitor internals) may still be attached to the circuit board, or scattered in the vicinity.
      Surface Mount Device (SMD) packaging is used for ultra-compact electrolytic capacitors instead of traditional metal cans, for components soldered directly to printed circuit boards. Because these devices are so small, a magnifying glass is useful for visual inspection. The only visible clue to failure may be a small leakage of electrolyte from the package, but often a defective SMD device cannot be identified by its external appearance.
Sometimes, electrolytic capacitors fail without any visible changes in appearance of the external SMD or metal can package. Since the electrical characteristics of capacitors are the reason for their use, these parameters must be tested with instruments to definitively decide if the devices have failed.”  Source: http://en.wikipedia.org/wiki/Capacitor_plague

I believe I’m lucky if a modern capacitor in any of the electrical devices I own last more than 5 years.  But that’s just my belief.   To what extent Apple had solved the problem of bad capacitors in the period 2006 – 2009 (the production life of the A1181 MacBook) I do not know. The problem is industry wide. That means, the whole electronics industry, not just computers.

I’ll give Wikipedia the last say:
Quote: “Computer symptoms
Some common behavioral symptoms of "bad caps" seen in computer systems are:
Intermittent failure to turn on, requiring user to press reset or try turning the computer on repeatedly
Instabilities (hangs, occurrences of the "Blue Screen of Death", kernel panics, etc.), especially when symptoms get progressively more frequent over time
Memory errors, especially ones that get more frequent with time 
Spontaneous restarts or resets
In on-board or add-on video cards, unstable image in some video modes
Failure to complete the Power-On Self Test ("POST"), or spontaneous rebooting before it is completed
Failure to even start the POST; fans spin but the system appears dead….” End quote.  Source:  : http://en.wikipedia.org/wiki/Capacitor_plague
Sound Familiar? See my previous post.

Next: Recording TV, audio and video on a budget.