[Info] How to tuning MPExended (1 Viewer)

[regeszter]

Hi,

I like to share some info regards tuning of the MExtended.

The profiles are stored in c:\ProgramData\MPExtended\StreamingProfiles.xml

This is a ffmpeg profile from StreamingProfiles.xml

<TranscoderProfile>
<Name>Android FFmpeg HD</Name>
<Description>HD-quality Android profile based on ffmpeg</Description>
<Bandwidth>2280</Bandwidth>
<Targets>
<Target>android</Target>
</Targets>
<Transport>http</Transport>
<MaxOutputWidth>1280</MaxOutputWidth>
<MaxOutputHeight>720</MaxOutputHeight>
<MIME>video/MP2T</MIME>
<HasVideoStream>true</HasVideoStream>
<Transcoder>MPExtended.Services.StreamingService.Transcoders.FFMpeg</Transcoder>
<TranscoderParameters>
<codecParameters>-codec:v libx264 -b:v 1768k -profile:v baseline -preset:v faster -coder rle -codec:a aac -b:a 512k -ac 2 -strict experimental -async 1 -sn -f mpegts</codecParameters>
</TranscoderParameters>
</TranscoderProfile>

• Changing of the 1768k to a higher value will cause better video quality but needs more network bandwidth.

• Enable the deinterlacing on server side add -vf yadif. It will cause higher CPU usage but needs for MPTvScheduler internal player.

• For skipping audio reencoding change aac -b:a 512k -ac 2 with copy. It will cause lower CPU usage.

• For decrease CPU usage change faster with veryfast or superfast. It will cause lower CPU usage but causes lower video quality.

Here is my HD profile:
<codecParameters>-codec:v libx264 -b:v 3096k -profile:v baseline -preset:v superfast -coder rle -codec:a copy -strict experimental -vf yadif -async 1 -sn -f mpegts</codecParameters>

And my SD profile:
<codecParameters>-codec:v libx264 -b:v 2048k -profile:v baseline -preset:v superfast -coder rle -codec:a copy -strict experimental -vf yadif -async 1 -sn -f mpegts</codecParameters>


Do not forget to save the original StreamingProfiles.xml, before you edit it!

thx,
regeszter

 

[Zoidberg77]

Thank you, regeszter! Good to know, especially the hint for deinterlacing.
Once in while I try to get Quicksync encoding enabled. But I fail everytime. The latest version of ffmpeg encoder should be able to use QS, but I never got it working (it just fails already as standalone, so no chance in MPextended at all). I tried also QSTranscode, which is working as standalone (command line) but won't work within MPextended and I have no idea why.
If someone has it running with qsv enabled, I'd appreciate a hint how to do it

 

[regeszter]

Thank you, regeszter! Good to know, especially the hint for deinterlacing.
Once in while I try to get Quicksync encoding enabled. But I fail everytime. The latest version of ffmpeg encoder should be able to use QS, but I never got it working (it just fails already as standalone, so no chance in MPextended at all). I tried also QSTranscode, which is working as standalone (command line) but won't work within MPextended and I have no idea why.
If someone has it running with qsv enabled, I'd appreciate a hint how to do it

What is the qsv option?

 

[Zoidberg77]

qsv = QuickSyncVideo
The codec in ffmpeg would be e.g. h264_qsv instead of libx264 to use QuickSync for h264 encoding

 

[regeszter]

qsv = QuickSyncVideo
The codec in ffmpeg would be e.g. h264_qsv instead of libx264 to use QuickSync for h264 encoding

Please give me a link to exe.

 

[Zoidberg77]

As said, latest ffmpeg (build with --enable-libmfx --enable-nonfree; e.g. https://ffmpeg.zeranoe.com/builds/) could do it in theory. See also https://trac.ffmpeg.org/wiki/HWAccelIntro
QSTranscode is another standalone transcoder https://sourceforge.net/projects/qstranscode/

of course both require Intel CPU capable of quicksync encoding

 

[regeszter]

of course both require Intel CPU capable of quicksync encoding

It saves 25% CPU usage on my low power J1900 cpu.

-c:v h264_qsv -b:v 3096k -preset:v veryfast -coder rle -codec:a copy -strict experimental -vf yadif -async 1 -sn -f mpegts -look_ahead 0

I changed the bold text in my profile. Try it.

 

[Zoidberg77]

Thank you, but it doesn't work for me.
If I replace the ffmpeg.exe in C:\Program Files (x86)\MPExtended\Service\Streaming with a new 32bit build, I need to remove the -coder rle option, otherwise transcoding doesn't work. But h264_qsv still doesn't work at all. But as said it even doesn't work as standalone (called ffmpeg from command line) on my server. So it may be a simple problem on my side. Only sad that QSTranscode as generic transcoder doesn't work within MPExtendend.
Thus, if anyone ever has the same problems, but finds a solution: I'm happy to hear

Edit 7/2017:
Just stumbled across this post. In the end I found out that my Sandy Bridge CPU is just not compatible with newer ffmpeg versions and qsv. I found an older version which should work with my CPU. But the gain in terms of less CPU utilization is quite low and doesn't justify using such an old version...