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40 votes
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What ffmpeg command would convert a video for iPad/iPhone/iPod?

Here's my take on it. I'll take the iPhone 4 or newer (including all iPads) as the target : H.264 Main profile, level 3.1 ffmpeg -i input.mp4 -vcodec libx264 -profile:v main -level 3.1 -preset medium ...
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30 votes
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Why does the terminal on my MacBook Pro seem to send me my iPad instead of the MacBook Pro itself?

More than likely your computer name just changed which is what is displayed in the CLI prompt. These commands via Terminal will shed some light as to the device you're using: Confirm macos version: ...
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  • 1,814
13 votes

Why does the Apple A12X processor have better benchmark results then the i7-4790T?

The A12X is an enormous CPU built on the latest technology, leaving far behind the older i7-4790T dating from 2014. First difference is the manufacturing process: The A12X is a 7 nm chip, while the ...
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8 votes
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Repeating a Wi-Fi signal with a Windows 7 laptop

The GUI option You can install a virtual router software package such as MaryFi (free) or Connectify. Creating a hosted network from the command line Another option is to do what you want from the ...
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  • 397
7 votes

Why don't iPhone or iPad compress the video they record?

5GB for 30 mins of HD data is already highly compressed - a raw 1080p is stream is in the order of magnitude of 50 times that size. - It seems that your expectations may be unrealistic, or that you ...
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5 votes
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Is there a USB Host Controllers on iPads?

The iPad does have a USB host controller built in it. However, there are no USB ports, only the one Apple Lightning port. The Apple Lightning port and cable are USB compatible, however they also ...
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4 votes

DNS domain pointing to LAN ip only works from one device

Early in Ethernet networking, most networks consisted of many devices doing many different tasks. Your average network had a Router, a Switch, firewall/NAT, a DHCP server, a DNS server, & web ...
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  • 5,734
3 votes

Can a USB cable carry 12v?

Years have passed since this question was asked, and it is no longer true that you can not "get" 12V out of plain USB-2 or USB-3. I'm providing an updated answer because this question ranks ...
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3 votes

Can the iPad Pro be used as input to a Linux computer?

This is now possible on Linux and macOS systems with a project I have created called Weylus. Screen mirroring, pressure sensitivity, tilt and multi touch are supported. Weylus turns your tablet or ...
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2 votes

How do I transfer PDF files to my iPad to take on a business trip

Just copying .pdf files to the iPad will not do; the trick is to imitate Apple's ".plist" configuration files. If you are comfortable using python, here is a simple script that will do the job for ...
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2 votes

"iTunes could not connect to this iPhone. This device is no longer connected."

reboot your iPad, and restart your iMac. Then try again. This normally fixes the issue. Also try reversing the lightning cable to see if that works, sometimes it does, weirdly enough. Also you can ...
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2 votes

Bookmarks - sync OS X Firefox with iPhone / iPad Safari

Firefox now provides sync functionality on multiple devices, which also includes open tabs. https://www.mozilla.org/en-US/firefox/sync/ There are a few things that currently don't work well with ...
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2 votes
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How can I install Microsoft Office off of my subscription on my iPad?

The login error is because the domain does not exist according to any DNS. The supported way is to download the Office apps separately from the app store. Once downloaded, you must sign in, and that ...
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2 votes
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Apple Devices, NTP-Requests?

As per this Q/A, they do indeed use hardcoded servers. You will probably find that many devices won’t accept anything but the IP configuration from a DHCP server. However, you can hijack the ...
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  • 54.5k
2 votes

32 ft usb 3 cable power not suficient

It would be more efficient, & no more unsightly, to just run a mains extension the 32ft then plug in your regular charger, if data is not a concern.
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2 votes
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32 ft usb 3 cable power not suficient

You may get better performance out of a physically thicker USB cable. DC electrical current is resisted more by thin conductors, which is OK on a 6-foot desktop cable, but becomes a problem on a 32-...
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2 votes
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Use iPad as Monitor

No, the iPad HDMI adapter does not have video input capability. You can use the iPad as a second screen for your computer using the Duet app, but it's not a general-purpose display.
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2 votes

My iPad's keyboard is split in the middle. How can I revert to a normal default keyboard?

Pinch on the screen over they keyboard to put it back together. Basically swipe inwards from both sides to put it together and swipe outwards from the middle to split it.
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1 vote

IPAD devices do not have USB access in WIndows 7

The solution for me was to log in to the computer as an Admin and go into the control panel / system / device manager. Whilst watching the screen plug in the iPod/iPad/iPhone and you'll see portable ...
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1 vote
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Can I use vlc on Linux to convert an audio file to m4a to be played on iPad/iPhone?

Ok, the answer is that, yes, the file can be created with vlc on Linux as a perfectly good m4a file that should be playable on iTunes on an iPad or iPhone. However, the file can only be transferred to ...
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  • 121
1 vote

Can I use vlc on Linux to convert an audio file to m4a to be played on iPad/iPhone?

Well, the very short answer to the originally asked question is: Yes, you can use vlc on Linux to convert an audio file encoded with AAC in an MP4 container, that should be able to be played on iOS ...
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  • 126
1 vote

Blocking a specific user from accessing YouTube

Its non-trivial, but you could run your own caching nameserver with your onw zone set up for Youtube. (There are a few ways to do this, if your router supports dd-wrt thats a good first step. You ...
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  • 64.9k
1 vote
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Using Reflector 2 between iPad Air 2 and PC Laptop

Resolution, use Airserver. Works like a charm and does exactly what we want it to do. No issues whatsoever.
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  • 561
1 vote

How to control a presentation on computer using iPad?

It would appear that there are apps on the appstore that accomplish this. Here is an example of one such app, though there seem to be several choices (some of which may be free). Googling "control ...
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1 vote

Can I permanently disallow OS upgrades on an iOS device?

Apple has a utility called Apple Configurator, available on the mac app store, that allows you to make a profile for a device and restrict certain features. Preventing updating is on the home screen ...
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1 vote

Mac OS X 10.10 (Yosemite) unable to connect to “Personal Hotspot” on an iPad running iOS 8

In my case, just signing out of iCloud on the Mac then connecting to the hotspot prompted for a password, when it hadn't been prompting for password before. I was then able to connect My iPhone was ...
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1 vote

Mac OS X 10.10 (Yosemite) unable to connect to “Personal Hotspot” on an iPad running iOS 8

Tim Klein posted a solution on the Apple Support Community that did the trick: Sign out of the iCloud account on both devices. (I let iCloud delete everything when asked. It all comes back when ...
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1 vote
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Bookmarks - sync OS X Firefox with iPhone / iPad Safari

In a word, no. This doesn't seem to be something that is possible. It used to work with Xmarks, but Apple changed something that prohibited it from syncing properly and the Xmarks developers have ...
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