I am looking for video stream server for mobile,and find dss and mfpeg server.
is anyone know the difference between dss and ffmpeg server? which one is recommended?
thank you
if you need a server with a lot of community coverage, use vlc. It is uses live555libs (live555 has its seperate streaming server too)
As for the other too, i found that DSS was better. You can lookup how to install and configure but troubleshooting can get real annoying.
Of course DSS is preferred.
1. Easy to use
2. Better performance
3. More readable & stable code...
ffmpeg server is usually used by hackers to experiment some new protocols, codecs, etc.
Related
As per topic. I have very old machine that i cannot replace (some old railway machine). That machine still uses 3.5zip drive. I need to fit the USB instead. Therefore, as i`m completely not familiar with this system, can someone direct me please on where to start to reconfigure this ( if manageable of course) for use with USB? I guess there would a need for drivers etc so the USB is discoverable.
Thanks a lot in advance.
You'll need to download io-usb (the USB server) and Fsys.usb (the USB bulk storage driver).
Start here:
http://foundry27.com/sf/wiki/do/viewPage/projects.qnx4/wiki/InstallationNotesForUSBStack?selectedTab=versions&version=4
Continue here:
https://openqnx.com/phpbbforum/viewtopic.php?t=11230
Is there any way to implement MQTT protocol on Ingenico's POS devices? I am currently working on iCT220 on which I want to implement IOT project. In this project, I will be sending some bytes (may be 400-1000 bytes) of data to the broker (server).
There are lots of source codes for the library available in the internet, but all make use of Linux or Windows socket libraries, where as Ingenico's devices come with proprietary libraries.
Have anyone implemented similar project on the same devices? Can anyone guide me to the process of implementation?
Thanks in advance,
Pankaj
Surely, you will need to build it from source.
I had a look at several client libraries and it looks that dependencies come mostly from IP stack, so there's very little to be implemented to have it running.
You should expect the proprietary OS issues to be thing of the past in short time - newer terminal lines are based on linux.
WebRTC requires too much processing power on server so doing it massively will be cost-prohibitive.
For nearly all other platforms - both for Windows and Mac - Chrome, Safari desktop, even IE and Edge, and Android - there is a Media Source Extensions API (https://en.wikipedia.org/wiki/Media_Source_Extensions) which allows sending stream over websockets and play it, it works. Problem is just with iOS.
Is there anything better (lower latency) than HLS which would work for me?
If not, is there a WebRTC server which is free and better scalable/more stable than Kurento Media Server (https://github.com/Kurento/kurento-media-server)?
There is a jsmpeg player http://jsmpeg.com/ but it is MPEG-1 only so will require unacceptable amount of bandwidth. There is broadway.js but it does not support audio...
Is there anything better (lower latency) than HLS which would work for me?
HTTP Progressive is a fine technology for this. It can be ran at much lower latencies than a segmented technology like DASH or HLS, and requires very little in terms of server-side resources. Look into Icecast for your server, and FFmpeg as your source.
There's no point in sending video over Web Sockets, unless you're implementing a bi-directional protocol. This isn't uncommon for ABR support, but it's definitely not the most efficient or simple way to do it.
Since you don't want to implement webRTC by yourself and need lower latency than HLS, I would prefer a media server. There are many media servers available in the market. But if you are looking for free and open source media server, your options are limited to few.
I would suggest red5 media server which is free and open source. Please check this link to find more about red5. If you use free red 5 media server you need little knowledge of java. Red5 also has a paid version called red5 pro which has better webRTC support and higher capabilities. Red5 is mostly for rtmp with flash player pulgin and its fairly new for red 5 webRTC streaming.
Also you can use wowza streaming engine trail version with limited number of connections. So these are the easiest options for you.
Can you advice something in building a Rails app that would nicely communicate with Flex via sockets. Currently I found only two ways of communication: Simple HttpRequest, RemoteObject. But I need something "multiplayer" style. I need Flex to talk to sockets and Rails app to grab data from those sockets do some job and push something back to a socket so Flex could read it "on the fly".
Any poor design flow? :) Thx in advance.
Depends on what exactly you need it to do and how responsive you need it. You can look into the Ruby AMF plugin which is a native type for Flash, which makes transferring classes a breeze. The Java implementation has a streaming server built in, not sure if the Ruby version does.
Other than that, if you want it to be really responsive, you could 2 different approaches: an RTMP server (SmartFoxServer, Wowza, Red5, LCDS, etc - all Java based) or you could try to do p2p (Adobe calls it Cirrus - and it's still in pre-production). If you do use the p2p route, you still need a fallback in case something goes funky.
What is a good Delphi library for samplerate conversion of audio data? I don't mind paying for something.
I need to upsample and download sample audio in realtime. I understand the theory but don't want to write my own routines.
EDIT: Bonus points for something with Mac support.
You can check the unit "DAV_DspUpDownsampling.pas" in the Delphi Asio Vst Project. Although I've never used it I'm sure it would fill your needs.
Use SoX - the Swiss Army knife of sound processing. Very easy to use.
It is a command line tool not a Delphi library so to use from Delphi you need to execute a shell command and get the result with in your code. I have used it with PHP.
SoX is a cross-platform (Windows, Linux, MacOS X, etc.) command line utility that can convert various formats of computer audio files in to other formats. It can also apply various effects to these sound files, and, as an added bonus, SoX can play and record audio files on most platforms.
SoX is very mature project! Here is the link:
http://sox.sourceforge.net/
Dew Research's DSP Master could be an option for you.
Maybe Mitov software has components you can use
I use newAc in quite a few projects. It can do sample rate conversion.
The best news: It is free (also for commercial use)
Yes, you can use AudioLab from Mitov Software for that. It appears that nobody actually posted the link ;-), so here it is - http://www.mitov.com/products/audiolab.
Enjoy!
I use Bass Audio Library.
You can use Bass_Encode and a Bass_Mixer to samplerate conversion.
http://www.un4seen.com/bass.html
The Mitov components do this easily. I've made a short screen recording that shows the steps.
http://tinyurl.com/mitovaudio
The Mitov video and other components are equally powerful. We've used the Mitov libraries on major real-time video and audio processing projects with excellent results. Their support is excellent.
AFAIK, the components are free to evaluate and for non-commercial projects.
PS I believe he's a FireMonkey guy, so I'd guess that we can expect Mac support now or in the future.
You may want to take a look at Secret Rabbit Code (aka libsamplerate); it's a C library, but it should be quite easy to create a wrapper. The API is simple, and supports a wide range of operating systems and platforms (even embedded!).
It has a mature and very good quality code base, and it's extremely efficient. Support is also awesome, Erik is very responsive. Plus it has a huge user base.
Another option is libsoxr (which seems to produce better output, but is not so popular...).