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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for June 14th, 2013

Retina MacBook Pro: extending battery life by disabling the discrete NVIDIA GeForce GT 650M graphics

Posted by jpluimers on 2013/06/14

One of the big differences between my old 13-inch MacBook Air and (fairly new) 15-inch Retina MacBook Pro was the predictability of battery usage.

The MacBook Air lasts between 4-5 hours. The Retina MacBook anywhere between 3-5 hours.

I finally found out the cause: Chrome, Remote Desktop and VMware Fusion will often (VMware fusion immediately) switch to the  discrete NVIDIA GeForce GT 650M graphics. Which uses a lot more battery (but less memory) than the integrated Intel HD 4000. Though both can drive the retina display at 2800×1600 (see Retina MacBook Pro Pushes the Limits of its Graphics Capabilities – Mac Rumors) the latter is better suited for the road warrior.

But still having the need for Chrome, Remote Desktop and VMware Fusion, I wanted a way to block switching to discrete graphics.

Luckily, quite a few sites describe how to do that:

The all come down to installing gfxCardStatus by cody krieger.

Steps to force integrated graphics: Read the rest of this entry »

Posted in Apple, Mac, MacBook, MacBook Retina, MacBook-Air, MacBook-Pro, Power User | 3 Comments »

AAC – DivX encoder information

Posted by jpluimers on 2013/06/14

There are a lot of encoders around that encode audio into AAC and often support many of the possible AAC feature extensions.

One of those encoders is the DivX AAC encoder called DivXAACEnc.

It’s not only interesting because it is free, but also because they provide some very readable information on what kind of parameters it accepts, and what they do on the DivX AAC Encoder (Beta) | DivX Labs page.

So they talk about:

  • input types (WAV, RAW PCM, bits per sample)
  • rate control (CBR/VBR) and magnitude
  • modes (LC, HE1, HE2) and what they do
  • ADTS protection
  • Low-pass filter
  • Audio processing tips

Highly recommended information!

One big drawback: it is file based only, so it does not support streams.

Note: this is Windows only. Sorry.



Posted in Media Streaming, Power User | Leave a Comment »

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