[RDD] good off the shelf computer for Rivendell
Since I don’t actually use the appliance (or any similar version of CentOS) on anything, I can’t say what hardware support the appliance would or would not have. You might need to check this out yourself. My gut feeling is that it would be fine once you figure out how to overwrite the “ChromeOS” that is currently(?) on it. Watch out for any potential “secure boot” BIOS problems that could exist on this thing since it gets sold as a media player in mind. Depending on what your usage requirements are, I would question long term reliability of such a thing. Note that the Intel NUC has not proved to be a very long-lived device either and I generally trust ASUS products less! If you don’t care that this thing could have a likelihood to failing in the next year or two of 24/7 usage, then go for it. Note that in my case, I used a previously used PC to power our Rivendel at our radio station, which would normally be a very poor choice too! However, this computer was taken from a pile of other identical units (think lots of spare parts), and contains a set of mirrored drives, redundant power supplies and a proven reliable Gigabyte motherboard, all in a filtered rack mount case with lots of [noisy] fans to keep things cool. Furthermore I have another, partially current identical unit as a very “cold standby” could be made ready to replace a fully failed unit in a day or so, plus yet another computer (that wear other hats as well) that automatically gets daily rsyncs from the onair system, and can also “go on the air” in just a few minutes should the main fail (while allowing me to update the “cold standby” from it). Not to mention, there is yet another set of redundant computers (from same batch) at the radio transmitter site that automatically take over with some simple “backup audio programming” if there is any loss of audio stream from the studio itself for any reason. In short, I still sleep well at night even though I have a tired 8-year old computer providing programming to this radio station! PS: Actually, I’m a little surprised all this IS still running well at this point, which is why is shouted “STILL” in my previous post. But oh well, the station owner has a “don’t fix it if it ain’t [yet] broke” attitude. From: Seth Stevenson [mailto:rcflye...@gmail.com] Sent: Wednesday, February 17, 2016 2:12 PM To: Jim Stewart Cc: rivendell-dev@lists.rivendellaudio.org Subject: Re: [RDD] good off the shelf computer for Rivendell What about the Asus Chromebox-M004U? Any thoughts about running the Centos appliance on it? ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
[RDD] r128gain - integration
Wow! I never thought of using ffmpeg for this. I especially like the way you can tweak parameters that compute the "average RMS" adjustment desired. Does this always re-transcode the file (granted "re-transcoding" an uncompressed audio file should be close to lossless), or will it simply losslessly (and quickly, and reversibly) set a single "track gain" parameter to a file format that supports such a thing like the way "mp3gain" does? Date: Wed, 17 Feb 2016 14:34:00 + From: Wayne Merricks To: rivendell-dev@lists.rivendellaudio.org Subject: Re: [RDD] r128gain - integration Message-ID: <56c484d8.90...@thevoiceasia.com> Content-Type: text/plain; charset=windows-1252; format=flowed I had to do some audio normalisation (loudness/RMS) on a batch of videos recently. I used ffmpeg to automate the process but you have to be careful what you're doing as you can overcook it. ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] good off the shelf computer for Rivendell
What about the Asus Chromebox-M004U? Any thoughts about running the Centos appliance on it? On Wed, Feb 17, 2016 at 3:35 PM, Jim Stewart wrote: > I agree that the best piece-of-mind is usually obtained by just going with > the "turnkey" system the software manufacturer recommends/sells/supports. > This is commonly done with most other radio automation/playout systems out > there too. Then there is no "shouting match" potential between whether a > problem is with the hardware vendor or the software vendor. > > Also note that last time I asked, Paravel only offers payed-for, > continuing support on systems running their CentOS based turnkey > software/OS install (I completely understand why they limit themselves to > this!) > > That said, that isn't what I did. Linux generally runs on just about > anything. Mostly you might need to avoid any very new hardware pieces such > as exotic new video cards, hardware raid controllers, network interfaces, > etc. that there might not be Linux support for yet, so do your own research > on any hardware you are considering. Generally systems running completely > on true Intel based hardware is well supported. I personally would avoid > many nVidia video products because they insist on writing their own > closed-source drivers, which at times could potentially "quit working" > reliably with certain other OS upgrades. Some other hardware manufacturers > have gone down this road too at times (like VIA, Broadcom, & ATI). Again, > do your own research. > > The one station we have running Rivendell is STILL (after a few years now) > happily running on a single old Pentium 4 "semi-server-class" system, while > supporting a rather large amount of Jack audio clients/routing going on > while functioning reliably as a file server, an icecast server with three > stream encoders (but with very few clients attached at any one time), plus > some remote access and backup related services running on it at the same > time. Oh and I think it only has 1-gig of memory, but I carefully manage > it (I'd recommend a little more). > > Also if you are worried about getting hardware set up to run Linux, there > are several companies that you can get Linux (including Ubuntu) > preinstalled on and ready to go. "System76" is one such company that you > might not have heard of. > > Date: Tue, 16 Feb 2016 15:22:50 -0700 > From: "Lorne Tyndale" > To: "jorge soto" > Cc: Rivendell List > Subject: Re: [RDD] good off the shelf computer for rivendell > Message-ID: > < > 20160216152250.3b45a8e840b89c853b94d34027fab3e4.36905ab2c5@email06.secureserver.net > > > > Content-Type: text/plain; charset="utf-8" > > Hi, > > Paravel sells some excellent systems built for Rivendell. And they come > with operating system and Rivendell installed and ready to go, plus > technical support. > > http://paravelsystems.com/ > > > > > Just wondering what are some of you using to run rivendell on. I'm > looking > > for a good off the shelf machine to buy that can run Ubuntu 14 and > > rivendell without any problems. Any and all comments are greatly > > appreciated.___ > > Rivendell-dev mailing list > > Rivendell-dev@lists.rivendellaudio.org > > http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev > > > ___ > Rivendell-dev mailing list > Rivendell-dev@lists.rivendellaudio.org > http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev > -- Seth Stevenson ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
[RDD] good off the shelf computer for Rivendell
I agree that the best piece-of-mind is usually obtained by just going with the "turnkey" system the software manufacturer recommends/sells/supports. This is commonly done with most other radio automation/playout systems out there too. Then there is no "shouting match" potential between whether a problem is with the hardware vendor or the software vendor. Also note that last time I asked, Paravel only offers payed-for, continuing support on systems running their CentOS based turnkey software/OS install (I completely understand why they limit themselves to this!) That said, that isn't what I did. Linux generally runs on just about anything. Mostly you might need to avoid any very new hardware pieces such as exotic new video cards, hardware raid controllers, network interfaces, etc. that there might not be Linux support for yet, so do your own research on any hardware you are considering. Generally systems running completely on true Intel based hardware is well supported. I personally would avoid many nVidia video products because they insist on writing their own closed-source drivers, which at times could potentially "quit working" reliably with certain other OS upgrades. Some other hardware manufacturers have gone down this road too at times (like VIA, Broadcom, & ATI). Again, do your own research. The one station we have running Rivendell is STILL (after a few years now) happily running on a single old Pentium 4 "semi-server-class" system, while supporting a rather large amount of Jack audio clients/routing going on while functioning reliably as a file server, an icecast server with three stream encoders (but with very few clients attached at any one time), plus some remote access and backup related services running on it at the same time. Oh and I think it only has 1-gig of memory, but I carefully manage it (I'd recommend a little more). Also if you are worried about getting hardware set up to run Linux, there are several companies that you can get Linux (including Ubuntu) preinstalled on and ready to go. "System76" is one such company that you might not have heard of. Date: Tue, 16 Feb 2016 15:22:50 -0700 From: "Lorne Tyndale" To: "jorge soto" Cc: Rivendell List Subject: Re: [RDD] good off the shelf computer for rivendell Message-ID: <20160216152250.3b45a8e840b89c853b94d34027fab3e4.36905ab2c5@email06.secureserver.net> Content-Type: text/plain; charset="utf-8" Hi, Paravel sells some excellent systems built for Rivendell. And they come with operating system and Rivendell installed and ready to go, plus technical support. http://paravelsystems.com/ > > Just wondering what are some of you using to run rivendell on. I'm looking > for a good off the shelf machine to buy that can run Ubuntu 14 and > rivendell without any problems. Any and all comments are greatly > appreciated.___ > Rivendell-dev mailing list > Rivendell-dev@lists.rivendellaudio.org > http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] good off the shelf computer for rivendell
On Tue, 16 Feb 2016 13:58:59 -0800 jorge soto wrote: > Just wondering what are some of you using to run rivendell on. I'm looking > for a good off the shelf machine to buy that can run Ubuntu 14 and > rivendell without any problems. Any and all comments are greatly > appreciated. so many choices .. Look for a sound system with full surround ... the extra jacks for rear, subwoofer, 4 stereo outputs on one card, or even on the motherboard. Rivendell can use them as separate outputs, so you can have one for live assist (rdairplay) one for rdcatch, one for cue, or whatever way you set it up. I like the Asus DX sound card .. 4 outputs, runs on 12 volts with an extra cable so there is more headroom than usual, and a little higher output. Avoid "Intel Skylake" .. new chip set, at least for now ... driver trouble. ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] good off the shelf computer for rivendell
Thank you for all the replies. 2016-02-17 5:50 GMT-08:00 Al Peterson : > Jorge, I would not recommend you follow my lead, but I have the > Rivendell/Centos appliance version successfully running on a refurbished > $89.00 64-bit PC from a used computer store. > > I'm only mentioning it here because 1) It is actually possible to run it > on low-spec hardware should it become necessary to do so; 2) my situation > involves an ultra-low power (Part 15) hobby AM signal that only goes 3 > blocks, so my needs are not mission-critical; and 3) I am one cheap bd. > > A lot of brand-new off-the-shelf machinery today has that dopey UEFI thing > going on, which makes a Linux installation quite the ordeal -- another > reason why I went with older iron. I would listen to other respondents here > for advice on the best modern machinery you can get, but its nice to know > it is possible to hit the air using a clunker if you absolutely had to. > > *Alan Peterson* > *Rolling Valley Radio* > *Springfield VA* > ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] Now and Next Data
You need to make sure send now/next is turned on in rdadmin for the host you want in rd airplay settings. The macro you're using will just export now playing to a text file line by line which I assume is all you want to do. Regards, Wayne On 15/02/16 20:22, Ryan Kin wrote: I'm trying to get rivendell to export my now &next data... I'm using this code RN echo %t - %a > /home/rd/now_next/master.txt! Do I need to add anything else? ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] r128gain - integration
Hi,
I had to do some audio normalisation (loudness/RMS) on a batch of videos
recently. I used ffmpeg to automate the process but you have to be
careful what you're doing as you can overcook it.
I have a batch script that loops through a directory of video files
(changing it to apply to Rivendell wav files is just a case of adjusting
options).
First you analyse the file to get the peak and mean volumes:
ffmpeg -i file.wav -af "volumedetect" -f null /dev/null > /tmp/vol.tmp 2>&1
Then you grep that to read the mean and max volume lines:
MEAN="$(grep -E mean_volume /tmp/vol.tmp)"
MAX="$(grep -E max_volume /tmp/vol.tmp)"
A bit of clean up later and you get MEAN and MAX as just the numbers
(e.g. 7.7):
MEAN="$(echo ${MEAN##*:} | tr -d '[[:space:]]')"
MAX="$(echo ${MAX##*:} | tr -d '[[:space:]]')"
MEAN="$(echo ${MEAN:0:-2})" #Remove the db from the end e.g. 17db becomes 17
Next you do a quick calculation to figure out how much "gain" you need
to apply to adjust the average RMS volume. This is not the same as
adding +6 gain to everything like you would in peak normalisation.
ADJUSTMENT=$(echo "-13 - $MEAN" | bc) #-13dB RMS in this case is the
base line
In order for ffmpeg to work you need to format the adjustment like this:
FFMPEGVOL="volume=$ADJUSTMENT"
FFMPEGVOL="$FFMPEGVOL"dB
So it will read: volume=7dB (or whatever the calculation turned out to be)
ffmpeg -i file.wav -af "volume=$FFMPEGVOL" file.wav
FFMPEG should choose the same codec and settings from the original file
but you can always put them in manually to be safe.
Put all of this in a loop and you're done. You can run the output file
through the volume detect again to confirm the results.
This gave me a good baseline to work from but it might be too brash a
method if you're a particularly high end audio shop.
Regards,
Wayne
On 17/02/16 12:43, Cowboy wrote:
On Wednesday 17 February 2016 07:16:26 am ermina wrote:
either use peak normalization as before, or the
brand new loudness alignement. This way everyone is happy :)
On a practical basis i think it should work similar to the current peak
normalization on import : analyse file level and adjust to a default
global value (-23 LUFS) (either by destructively changing the level of
the file, or by adjusting cut gain).
I have no idea how technically it could be integrated
As previously, I can promise there will be a discussion.
Not today, probably not this week, but relatively soon.
___
Rivendell-dev mailing list
Rivendell-dev@lists.rivendellaudio.org
http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] r128gain - integration
On Wednesday 17 February 2016 07:16:26 am ermina wrote: > either use peak normalization as before, or the > brand new loudness alignement. This way everyone is happy :) > On a practical basis i think it should work similar to the current peak > normalization on import : analyse file level and adjust to a default > global value (-23 LUFS) (either by destructively changing the level of > the file, or by adjusting cut gain). > > I have no idea how technically it could be integrated As previously, I can promise there will be a discussion. Not today, probably not this week, but relatively soon. -- Cowboy http://cowboy.cwf1.com You could get a new lease on life -- if only you didn't need the first and last month in advance. ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
Re: [RDD] r128gain - integration
Hi, On 02/16/2016 08:58 PM, Robert Jeffares wrote: there is no reliable automated library leveliser. There may be one but it may not produce a consistent result across varied source material. Yes there is. It is called EBU R128, which precise goal is to get levels consistent between wildly different programs (think feature movie vs commercial spot and no more jumping on the remote). This document will be more effective than i am at describing why and how it works : https://tech.ebu.ch/docs/tech/tech3343.pdf This is a paradigm shift but it makes so much sense once you go with it, that one wonders why no one thought of this before. As for integrating in Rivendell, my humble opinion is that it should be a per-host (or maybe system wide) option, so as to not disrupt everyone's workflow : either use peak normalization as before, or the brand new loudness alignement. This way everyone is happy :) On a practical basis i think it should work similar to the current peak normalization on import : analyse file level and adjust to a default global value (-23 LUFS) (either by destructively changing the level of the file, or by adjusting cut gain). I have no idea how technically it could be integrated (if i were a programmer i would have tried to) but there is at least one open source linux library for loudness scanning, and the algorithm is publicly described (see here: https://tech.ebu.ch/docs/tech/tech3342.pdf) . e ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
[RDD] Rdcatch does not record or play out
Hi, i've installed the latest Rivendell image form Paravell's website. I'm trying to use rdcatch to record the show for later use. Set one recording deck under rdadmin's rdcatch config, connect the same input what i use for rdlibrary and recording with that tool is perfect. When i start rdcatch, i can see the recording deck, can toggle the monitor switch, but no audio signal can be seen on deck's meter. Define a recording task - following the relevant rog, using time base mode as no GPIO devices exist - nothing happens in given time. Tried macro command RS, not works. Log shows that macro command was sent, nothing more. How can i make work rdcatch? cheers, Korte ___ Rivendell-dev mailing list Rivendell-dev@lists.rivendellaudio.org http://caspian.paravelsystems.com/mailman/listinfo/rivendell-dev
