LeftForPlex 8 Posted May 8, 2014 Share Posted May 8, 2014 Can someone chime in on what the expected CPU utilization would be when using ffmpeg transcoding for DLNA? I'm running a Virtual Machine on top of Xen. The physical host has an i7-4770S, and 32GB of ram. The Virtual machine has 4 core's assigned and 8GB of ram. Right now I am seeing CPU utilization of 60-90% when using ffmpeg to decode a BluRay movie, After Earth. I get the feeling that the utilization is high, and that it may be related to the fact that this is being run inside of a VM. Thanks, Marcus Link to comment Share on other sites More sharing options...
Luke 37238 Posted May 8, 2014 Share Posted May 8, 2014 It really can vary depending on both the environment and also the characteristics of the input. if you post media info from the web client about that title it might reveal some clues. Link to comment Share on other sites More sharing options...
LeftForPlex 8 Posted May 8, 2014 Author Share Posted May 8, 2014 It really can vary depending on both the environment and also the characteristics of the input. if you post media info from the web client about that title it might reveal some clues. Here we go. I may go ahead and throw a linux build on another machine I have that has a i7-3770 which has similiar specs to see how much cpu is used by transcoding there. Thanks! Video CodecAVCResolution1920x1080 InterlacedNo Framerate23.97602 Bitrate32851 kbps Audio LanguageengCodecDTS-HD MA Channels6 ch Sample Rate48000 khz DefaultNo Audio LanguageengCodecAC3 Channels6 ch Bitrate640 kbps Sample Rate48000 khz DefaultNo Audio LanguagefraCodecDTS-HD MA Channels6 ch Sample Rate48000 khz DefaultNo Audio LanguagespaCodecAC3 Channels6 ch Bitrate640 kbps Sample Rate48000 khz DefaultNo Subtitle LanguageengCodecPGS DefaultNo ForcedNo ExternalNo Subtitle LanguageengCodecPGS DefaultNo ForcedNo ExternalNo Subtitle LanguagefraCodecPGS DefaultNo ForcedNo ExternalNo Subtitle LanguagespaCodecPGS DefaultNo ForcedNo ExternalNo Subtitle LanguagefraCodecPGS DefaultNo ForcedNo ExternalNo Path\\tower\BluRay\After Earth Link to comment Share on other sites More sharing options...
Luke 37238 Posted May 8, 2014 Share Posted May 8, 2014 And you'd also have to look at the dlna profile for the device. if we don't include one then it's using the default, which means almost everything is going to transcode. So you can also look into building a custom profile based on the device capabilities to direct play certain formats when possible. Link to comment Share on other sites More sharing options...
LeftForPlex 8 Posted May 8, 2014 Author Share Posted May 8, 2014 And you'd also have to look at the dlna profile for the device. if we don't include one then it's using the default, which means almost everything is going to transcode. So you can also look into building a custom profile based on the device capabilities to direct play certain formats when possible. Ahhh ok that makes sense. So newer devices are more powerful so they may not require transcoding of the content. Got it. If the content is say BluRay using h.264, will it still transcode if the DLNA device supports h.264 but not in a BluRay structure? I guess what I mean is would I be better off converting everything over to mpg? Link to comment Share on other sites More sharing options...
Luke 37238 Posted May 8, 2014 Share Posted May 8, 2014 it's still going to have to transcode a bluray folder rip but there are ways to do that efficiently. it all comes down to the profile. but yes nowadays mp4 is the recommended format for sure. Link to comment Share on other sites More sharing options...
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