This is just for fun - and just because ffmpeg allows us to do it.

At the moment it's a very simple visualization engine. But the more recent ffmpeg releases allows more sophisticated solutions by combining several modes into one visual 'show'. I will include more of these when we get there, but for now, a basic coding-structure is in place.

The visualization presets found in the menu is defined in the file /usr/local/pmusic/txt_visualization, and contains 2 columns: Name and Command.

Wave 1|amovie=/root/.pmusic/tmp/pmusic.sdp, asplit [a][out1]; [a] showwaves [out0] 

Wave 2|amovie=/root/.pmusic/tmp/pmusic.sdp, asplit [a][out1]; [a] showwaves=mode=line [out0] 

Waves 1|amovie=/root/.pmusic/tmp/pmusic.sdp, asplit [a][out1]; [a] showwaves=mode=p2p:split_channels=1 [out0] 

Waves 2|amovie=/root/.pmusic/tmp/pmusic.sdp, asplit [a][out1]; [a] showwaves=mode=cline:split_channels=1 [out0]

It maybe looks complex, but a closer look shows that only the last part of the command is unique. For line 2 that is; showwaves=mode=line

Note!
This will NOT make pMusic depend on a newer ffmpeg as extended visualization is optional. I plan to stick with 1.2. But, ffmpeg is evolving fast, so we have to keep an eye of what we 'need' in the future.

see also:
ffmpeg - the multimedia hub
pMusic - FFmpeg monitor

Posted on 10 Jun 2016, 18:07 by zigbert - Categories: Development
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