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Serviio is limiting bandwidth when only transcoding audio

PostPosted: Sun Oct 21, 2012 10:17 am
by unky
Hello,

i am using Serviio on a Grundig LCD TV 40 VLE 8120 BG.
It does not play DTS.
So when I use the generic DLNA profile it plays only video (mkv h264) and no audio. it plays the video without interuptions. a quick look in my task manager reveals that the bandwidth used is varing between 2mbit and 15 mbit. the video is playing smoothly.

In order to also be able to listen something i used the folling profile setting:

<Profile id="XXX" name="Grundig_test" extendsProfileId="1">
<Transcoding>
<Video targetContainer="mpegts" targetACodec="ac3">
<Matches container="matroska" aCodec="dca"/>
</Video>
</Transcoding>
</Profile>

Now it also plays the sound however Serviio does not send more than 5mbit over the network. somehow serviio is limiting the bandwidth. it is fine for slow moving scenes, however when more bandwith is actually needed the video stops and resumes after few seconds. i know serviio is the problem, because i see the network utilization in windows task manager. it is just 5 mbit, rather than 2-15mbit in the generic DLNA profile.

how to tell serviio to give full bandwidth when transcoding only audio? not just 5mbit, its not enough for the peaks in the movie

Re: Serviio is limiting bandwidth when only transcoding audi

PostPosted: Sun Oct 21, 2012 9:45 pm
by zip
There is no limitation in the FFMpeg command, the video codec is just copied as is.

Let the transcode job finish, rename the .srt file in transcoding folder to .mpg and add it to your library. Play it natively and compare the bitrate then.

Re: Serviio is limiting bandwidth when only transcoding audi

PostPosted: Sat Oct 27, 2012 12:51 pm
by unky
i dont know what u are talking about. the stream is working, just somehow the stream is limited at 5mbit/s. whenever the movie requires less bandwidth it works just fine.
i just want to know how to tell serviio to let him create a stream with more than 5mbit/s

Re: Serviio is limiting bandwidth when only transcoding audi

PostPosted: Sat Oct 27, 2012 10:22 pm
by zip
There is no way, as i said it copies the video stream as it is.

Re: Serviio is limiting bandwidth when only transcoding audi

PostPosted: Sun Oct 28, 2012 6:56 pm
by npuser
unky wrote:i dont know what u are talking about. the stream is working, just somehow the stream is limited at 5mbit/s. whenever the movie requires less bandwidth it works just fine.
i just want to know how to tell serviio to let him create a stream with more than 5mbit/s


Sounds like you have network issue - wire/wireless. If it is wired - it could be a duplex and speed mis-match issue. Make sure network siwthport is configured properly on both ends - auto duplex 10/100/1000mb. Check for the interface errors tx, rx or crc. If you see errors incrementing on any of these (tx,rx & crc) then u have bad Ethernet cable. If the setup is wireless then troubleshoot the speed issue there. For better troubleshooting, try to a copy large file from the serviio server over to a computer to see what kind of network copy speed do you get and use that as your benchmark to troubleshoot the issue.

not likely but other thing to check - since your are extending profile 1 (generic) for this device. Make sure you do not have " maxavBitrate or maxVBitrate="5000" " somewhere in match container.

NPuser