49 lines
1.8 KiB
Markdown
49 lines
1.8 KiB
Markdown
TechRec
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=======
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A Python2 web application that assist radio speakers in recording their shows.
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Meant to be simple to install and to maintain.
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It basically takes a directory with the continuous recording and create new
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files "cutting/pasting" with ffmpeg.
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Features
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=========
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* little system dependencies: python2 and ffmpeg
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* The interface is extremely simple to use
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* You can have nested recording (ie: to record an interview inside of a whole
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show)
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* There is no user system: any user opening the website will see the complete
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status of the applications. There is, also, nothing stored in cookie or
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similar mechanisms. This means that recording a session does not require a
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browser to remain open, or any kind of persistence client-side: server-side
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does it all. It also means that authorization must be done on another layer
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(for example, your webserver could add a Basic Auth)
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How does it work
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================
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We suppose that you have a continous recording of your radio broadcasting.
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What techrec does is taking files from this directory and "cutting/pasting"
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parts of them. This can boil down to something like
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```sh
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ffmpeg -i concat:2014-20-01-00-00.mp3|2014-20-01-00-01.mp3 -acodec copy -ss 160 -t 1840 foo.mp3
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```
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Implementation details
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======================
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It is based on bottle, to get a minimal framework. Simple APIs are offered
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through it, and the static site uses them.
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Jobs are not dispatched using stuff like celery, but with a thin wrapper over
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`multiprocessing.Pool`; this is just to keep the installation as simple as
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possible.
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The encoding part is delegated to `ffmpeg`, but the code is really modular so
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changing this is a breeze. To be quicker and avoid the quality issues related
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to reencoding, the codec "copy" is used: this means that input and output must
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have the same format.
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