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Downscale video quality

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joelcd

Serviio newbie

Posts: 3

Joined: Fri Jan 04, 2013 8:35 am

Post Fri Jan 04, 2013 8:38 am

Downscale video quality

Hello,
I have a synology NAS on which I installed Serviio DLNA server.
The goal is to access my movies stored on the NAS for all my clients xbmc (macmini, ATV, Ipad).
My IOS devices connected beings WIFI (no possibility to use a wired network) flow is too slow to play 1080p movies without lag. I therefore wish to use the functionalities of Serviio transcoding for downscale the quality of my movies on the fly.
Could you help me to create a profile ?

Thank you !

Joe

PS : Sorry for my bad english, i'm french :D
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zip

User avatar

Serviio developer / Site Admin

Posts: 17215

Joined: Sat Oct 24, 2009 12:24 pm

Location: London, UK

Post Fri Jan 04, 2013 11:01 am

Re: Downscale video quality

You can set max bitrate and/or max height. But I'm not sure if the MAS enough power to do any transcoding.
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joelcd

Serviio newbie

Posts: 3

Joined: Fri Jan 04, 2013 8:35 am

Post Fri Jan 04, 2013 1:13 pm

Re: Downscale video quality

Thank you for your quick response! ;)
Could you give me an Example of use of two parameters?
Regarding the NAS, it is a Synology DS212J with ARM processor. A fair bit but if necessary I will replace.
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zip

User avatar

Serviio developer / Site Admin

Posts: 17215

Joined: Sat Oct 24, 2009 12:24 pm

Location: London, UK

Post Fri Jan 04, 2013 1:35 pm

Re: Downscale video quality

look at some of the existing profiles in both profiles.xml and application-profiles.xml
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joelcd

Serviio newbie

Posts: 3

Joined: Fri Jan 04, 2013 8:35 am

Post Sun Jan 06, 2013 5:29 pm

Re: Downscale video quality

I dont understand, maxHeight does not work in the TargetTranscode but MatchTranscode. Therefore not possible to change the resolution on the fly ?!
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zip

User avatar

Serviio developer / Site Admin

Posts: 17215

Joined: Sat Oct 24, 2009 12:24 pm

Location: London, UK

Post Mon Jan 07, 2013 3:02 pm

Re: Downscale video quality

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peter1212

Serviio lover

Posts: 52

Joined: Wed Mar 23, 2011 5:36 pm

Post Mon Jan 07, 2013 7:30 pm

Re: Downscale video quality

I am in the exact same situation.
My Old fashioned xbox running xbmc4xbox isn't able to play HD (and not so HD) movies stored on my computer, and i want to transcode them to play them smoothly, that is, downscale video quality.

I'll give it a try and tell you my progress.

Mainly, what i'm looking for is to downscale all videos (*.avi) exceeding 700p of height, and 1300 Kb/s of bitrate to another smaller values.
And transcode h264 codec files (mp4) to another format, because my old xbmc4xbox is not able to play them.

Any help will be welcome.

Best regards.
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peter1212

Serviio lover

Posts: 52

Joined: Wed Mar 23, 2011 5:36 pm

Post Mon Jan 07, 2013 9:00 pm

Re: Downscale video quality

Hi again!

Mi first attemp is this:

  Code:
   <Profile id="pelele" name="Pelele" extendsProfileId="1" alwaysEnableTranscoding="true" >
      <Transcoding>
         <Video targetContainer="mpeg" targetVCodec="mpeg2video" targetACodec="mp3" forceStereo="true" aSamplerate="44100" maxVBitrate="1000" maxHeight="480">         
            <Matches container="*" />            
         </Video>
      </Transcoding>
   </Profile>


This profile transcode all videos * (for testing at the moment) to mpeg/mp3 stereo with maxheight=480 and maxVbitrate to 1000. Now my xbox play smoothly the movies, even h264, but in my next attemp I'll try it to transcode only my needed files.

Best regards.
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peter1212

Serviio lover

Posts: 52

Joined: Wed Mar 23, 2011 5:36 pm

Post Tue Jan 08, 2013 9:58 am

Re: Downscale video quality

zip, do you know if is there an option to transcode only the videofiles what exceeds a size (maxHeight?) or a bitrate(maxVBitrate)?

i don't find the option in "matches section" of the documentation.
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zip

User avatar

Serviio developer / Site Admin

Posts: 17215

Joined: Sat Oct 24, 2009 12:24 pm

Location: London, UK

Post Tue Jan 08, 2013 10:21 am

Re: Downscale video quality

no, there is not

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