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cmarrin / videomonkey

ffmpeg based video encoding tool for Mac OSX 10.6 and above
http://videomonkey.org
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Macbook Air fans go off the charts when using VM #107

Open mdmcholet opened 10 years ago

mdmcholet commented 10 years ago

Hi When I use VM on my macbook air the fans race up to 6500rpm which is a concern so stopped using VM as i don't want to cause any damage

This doesn't happen on my iMac Thanks

cmarrin commented 10 years ago

This is expected behavior. Encoding a video is extremely CPU intensive. VM uses ffmpeg, which is a tool that can use all available CPU's to make the encoding much faster. Because a MacBook is in such a small case it needs lots of cooling when the CPU's are running full blast. That's not necessary for the iMac because it is in a larger case. I wouldn't worry, but if you want to put less strain on your fans you can go into Preferences and set "Max threads for encoding" to a smaller value. Setting it to "1" will take longer to encode, but will keep your MacBook quieter, and use less battery as well. Of course, I'm not sure if you'll actually save battery, since you're draining it more slowly, but for a longer time.

mdmcholet commented 10 years ago

Thanks for the explanation, I was worried something was wrong

On 30 Aug 2014, at 02:00, Chris Marrin notifications@github.com wrote:

This is expected behavior. Encoding a video is extremely CPU intensive. VM uses ffmpeg, which is a tool that can use all available CPU's to make the encoding much faster. Because a MacBook is in such a small case it needs lots of cooling when the CPU's are running full blast. That's not necessary for the iMac because it is in a larger case. I wouldn't worry, but if you want to put less strain on your fans you can go into Preferences and set "Max threads for encoding" to a smaller value. Setting it to "1" will take longer to encode, but will keep your MacBook quieter, and use less battery as well. Of course, I'm not sure if you'll actually save battery, since you're draining it more slowly, but for a longer time.

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