Is there a way to adjust FFMPEG preset value?

General discussion about Universal Media Server (no support or requests)
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brucecy92
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Joined: Mon May 11, 2020 1:29 pm

Is there a way to adjust FFMPEG preset value?

Post by brucecy92 » Fri May 15, 2020 7:26 pm

Hi, I'm streaming h.264 to my PS3, and the picture looks great. However, for certain things (like scrolling credits), the bitrate skyrockets and my network can't keep up. (By "skyrocket", I mean that it jumps from an average of 5 Mbps to 65 Mbps). By comparison, Plex's DLNA server uses about 3 Mbps for the same video.

I was thinking that since my CPU is underutilized, it might be helpful to adjust FFMPEG's `preset` setting to something that compresses slower but better. Is there a way to adjust UMS' FFMPEG values?

Thanks!

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SubJunk
Lead Developer
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Joined: Sun May 27, 2012 4:12 pm

Re: Is there a way to adjust FFMPEG preset value?

Post by SubJunk » Tue Aug 18, 2020 9:13 am

On the Transcoding Settings tab there is the "Transcoding quality (H.264)" setting. Make sure that is set to "Automatic (wireless)" if that's what you have. Also make sure that on the General Settings tab, your "Maximum bandwidth" setting is accurate (default for wireless is 30), or use automatic maximum bandwidth.
Those two settings will ideally improve that.

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