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jpsollie
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Joined: 17 Aug 2013
Posts: 291
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 Posted: Wed Aug 15, 2018 5:08 am Post subject: [solved] upnp possible streaming formats |
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I have a gerbera upnp server running on my fileserver,
and I use ffmpeg to recode the content:
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<agent command="ffmpeg" arguments='-i %in -filter_complex "[0:v][0:s:0]overlay[v]" -map "[v]" -map 0:a -vcodec mpeg2video -b:v 8192k -r 25 -acodec libmp3lame -b:a 128k -ar 48000 -ac 2 -async 1 -f dvd -threads 16 -y %out'/>
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but with the current move to 1080p, this becomes a problem:
- my tv (philips ambilight 6700) only has a 100mbps connection, so I can't increase the bitrate to increase channel quality.
- I cannot stream h264 over dvd format, apparently, so I need a new container format.
- The 1080p .mkv movies are already coded in h264, so just recode them for fun would lose a lot of quality and require a good cpu.
The CPU is a 32-cpu opteron system with a VAAPI card installed, so ideally, this should be feasible.
Anyone who has ideas about how to recode the content for upnp?
this would be the ideal setup:
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ffmpeg -i %in -c:v copy ...
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but what about the container format? which container format is capable of being streamed with upnp and capable of playing x264?
FYI: I use VLC on the tv.
_________________
The power of Gentoo optimization (not overclocked): [img]https://www.passmark.com/baselines/V10/images/503714802842.png[/img]
Last edited by jpsollie on Thu Aug 16, 2018 6:02 am; edited 1 time in total |
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jpsollie
Apprentice
Joined: 17 Aug 2013
Posts: 291
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| Posted: Thu Aug 16, 2018 6:01 am Post subject: |
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problem solved: this was the correct encoder string:
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-i %in -vcodec mpeg2video -q:v 2.0 -r 25 -acodec libmp3lame -b:a 192k -ar 48000 -ac 2 -async 1 -f dvd -threads 16 -maxrate 10MB -bufsize 8MB -y %out
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The bandwidth used is more or less 25% of 100mbps network limit for 1080p movies.
On top of this, the hardware acceleration of the 6700 series seems to be buggy, so I disabled hardware acceleration and the image becomes fine. On my laptop, there's no problem with VLC
contacted Philips support to ask them why there's no hardware acceleration. I will keep you up to date
*edit: corrected some typos
_________________
The power of Gentoo optimization (not overclocked): [img]https://www.passmark.com/baselines/V10/images/503714802842.png[/img] |
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