steve wrote:Not easily.
Audacity Projects may contain multiple audio clips in the same track, each with a start position offset.
You would need to identify the final audio clip (<sequence> ... </sequence>) in a track and its offset value, then add together the offset time with the sequence "numsamples" converted to seconds, then repeat for each track in the project and output the largest value.
Code: Select all
<?xml version="1.0" standalone="no"?>
<!DOCTYPE project PUBLIC "-//audacityproject-1.3.0//DTD//EN" "http://audacityteam.org/xml/audacityproject-1.3.0.dtd">
<project xmlns="http://audacityteam.org/xml/" projname="020_data" version="1.3.0" audacityversion="1.3.13-beta" sel0="28.1890249433" sel1="28.1890249433" vpos="0" h="25.0311111111" zoom="86.1328125000" rate="44100.0">
<tags/>
<wavetrack name="Mixer" channel="2" linked="0" mute="0" solo="0" height="150" minimized="0" rate="44100" gain="1.0" pan="0.0">
<waveclip offset="0.00000000">
<sequence maxsamples="262144" sampleformat="262159" numsamples="3150747">
<waveblock start="0">
<simpleblockfile filename="e00007fe.au" len="262144" min="-0.216187" max="0.250671" rms="0.043167"/>
</waveblock>
<waveblock start="262144">
<simpleblockfile filename="e0000661.au" len="262144" min="-0.186707" max="0.284424" rms="0.057777"/>
</waveblock>
<waveblock start="524288">
<simpleblockfile filename="e0000730.au" len="262144" min="-0.188629" max="0.315247" rms="0.049921"/>
</waveblock>
<waveblock start="786432">
<simpleblockfile filename="e000080f.au" len="262144" min="-0.315643" max="0.349243" rms="0.050288"/>
</waveblock>
<waveblock start="1048576">
<simpleblockfile filename="e0000de9.au" len="262144" min="-0.243683" max="0.396942" rms="0.058242"/>
</waveblock>
<waveblock start="1310720">
<simpleblockfile filename="e00003db.au" len="262144" min="-0.212891" max="0.338654" rms="0.05351"/>
</waveblock>
<waveblock start="1572864">
<simpleblockfile filename="e00000d2.au" len="262144" min="-0.279816" max="0.368225" rms="0.058814"/>
</waveblock>
<waveblock start="1835008">
<simpleblockfile filename="e00005a2.au" len="262144" min="-0.248749" max="0.283569" rms="0.051571"/>
</waveblock>
<waveblock start="2097152">
<simpleblockfile filename="e00003d1.au" len="262144" min="-0.236389" max="0.297821" rms="0.059904"/>
</waveblock>
<waveblock start="2359296">
<simpleblockfile filename="e0000c2b.au" len="262144" min="-0.240967" max="0.298462" rms="0.048832"/>
</waveblock>
<waveblock start="2621440">
<simpleblockfile filename="e0000815.au" len="262144" min="-0.221466" max="0.321503" rms="0.04221"/>
</waveblock>
<waveblock start="2883584">
<simpleblockfile filename="e0000467.au" len="262144" min="-0.224884" max="0.252655" rms="0.044508"/>
</waveblock>
<waveblock start="3145728">
<simpleblockfile filename="e0000a5d.au" len="5019" min="-0.00824" max="0.006683" rms="0.000828"/>
</waveblock>
</sequence>
<envelope numpoints="0"/>
</waveclip>
</wavetrack>
</project>
Code: Select all
<wavetrack name="Mixer" channel="2" linked="0" mute="0" solo="0" height="150" minimized="0" rate="44100" gain="1.0" pan="0.0">
<waveclip offset="0.00000000">
<sequence maxsamples="262144" sampleformat="262159" numsamples="3150747">steve wrote:Here's the relevant part of the file:The sample rate is 44100 Hz.Code: Select all
<wavetrack name="Mixer" channel="2" linked="0" mute="0" solo="0" height="150" minimized="0" rate="44100" gain="1.0" pan="0.0"> <waveclip offset="0.00000000"> <sequence maxsamples="262144" sampleformat="262159" numsamples="3150747">
The offset is 0.00000000
The number of samples is 3150747
To calculate the length:
offset + (numsamples / sample rate)
0.000000 + (3150747 / 44100)
= 71.445510204 seconds.