SX10 Audio Only Record, - Script Writing - CHDK Forum
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SX10 Audio Only Record,

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Offline Registered55

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SX10 Audio Only Record,
« on: 28 / January / 2010, 14:30:02 »
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i turned the compression option down to 1, but the video recording is still weighing in at around 200 Kbps,

I'm after just the audio, is there a script that will just record the audio, or could someone help,

the CHDK manual says something about sound recording only is possible, but i don't know how, or even if the SX10 is capable of that feature,

i tried turning the compression mode from normal to quality, but the same bitrate is achieved, i just want the sound only,

hope someone can help, thanks,
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Offline sandeman

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Re: SX10 Audio Only Record,
« Reply #1 on: 28 / January / 2010, 15:50:58 »
In the play mode, press menu and you will have the audio recording option.
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Offline Registered55

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Re: SX10 Audio Only Record,
« Reply #2 on: 28 / January / 2010, 16:40:57 »
thanks, it did not occur to me that to record sound one has to go into play mode,

just one problem though, the sound is being recorded in a WAV format, with no compression being used, massive amounts of space is being used up,

is there anyway of turning on compression, perhaps mp2 or mp3,

because i save more on space when recording video and sound, as Mpeg recording utilizes compression,

i was hoping there was a way like the manual does say that some camera's can do, and that is turn of video recording, and just save the Audio track only,

long story short, i want to leave my camera recording all the sounds in my front room whilst I'm at work, (the reason is not relevant)

appreciate any feedback,

« Last Edit: 28 / January / 2010, 16:50:49 by Registered55 »
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Offline sandeman

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Re: SX10 Audio Only Record,
« Reply #3 on: 28 / January / 2010, 16:48:48 »
Quote from: Registered55 on 28 / January / 2010, 16:40:57
thanks, it did not occur to me that to record sound one has to go into play mode,

just one problem though, the sound is being recorded in a WAV format, with no compression being used, massive amounts of space is being used up,

is there anyway of turning on compression, perhaps mp2 or mp3,


Not that I know of.
But can't you better use something else (e.g. a phone) for recording audio?
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Offline fe50

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Re: SX10 Audio Only Record,
« Reply #4 on: 29 / January / 2010, 01:00:36 »
Quote from: Registered55 on 28 / January / 2010, 14:30:02
the CHDK manual says something about sound recording only is possible
Quote
i was hoping there was a way like the manual does say that some camera's can do

Where did you find this information ?
It's not a CHDK feature...

Quote from: Registered55 on 28 / January / 2010, 16:40:57
is there anyway of turning on compression, perhaps mp2 or mp3
No, there's no such CHDK feature.
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Offline Registered55

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Re: SX10 Audio Only Record,
« Reply #5 on: 29 / January / 2010, 05:44:47 »
http://images2.wikia.nocookie.net/chdk/images/e/e7/CHDKmanual.pdf

page 16

I'm having trouble engaging high compression mode,

200 Kbps is the lowest compression rate i can achieve, that's with the lens cap on as well,

i cannot seem to get any lower then this bitrate,

i assume the cameara does record in mp2, which is part of the Mpeg codec,
otherwise the video & sound muxed file would be huge right?
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Offline fe50

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Re: SX10 Audio Only Record,
« Reply #6 on: 29 / January / 2010, 13:17:45 »
Quote from: Registered55 on 29 / January / 2010, 05:44:47
i assume the cameara does record in mp2, which is part of the Mpeg codec
No, on newer models like the SX10 Canon use the H.264 codec, QuickTime movie format.
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