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Forum: Pentax K-5 & K-5 II
01-30-2012, 11:08 AM
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With linear PCM 16 Bit little Endian integer (shown in Quicktime) you get: 2 channels x 16 bit x 32,000 Hz (samples/sec.) = 1,024,000 Bit/sec. = 1 Mbps.
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Forum: Pentax K-5 & K-5 II
01-29-2012, 10:44 AM
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I'd like to refer to some posts in this thread.
K5 sound quality:
I tested the K5 movie sound recording capabilities with stereo tone today. Setup:
- K5 connected to a MP3 player via stereo cable (you don't need a stereo mic to test sound in your Video).
- Played a stereo song with the MP3 player while recording a movie with the K5. For the test I recorded a HD video (1280x720).
I checked the result on my Mac. Quicktime showed the technical information of the movie. The K5 recorded the sound on 2 channels with 32.000 Hz sample rate. CDs do have a sample rate of 44.100 Hz and DVDs of 48.000 Hz. So, stereo sound recorded with K5 cannot be professional. In Cubase I compared the curves of the two channels. They are not equal. So I guess it's really stereo.
How do I get good sound quality in K5 videos:
IMHO - if you want really good sound you should consider a portable external sound recording solution with at least two integrated Mics (something like ZOOM H1 / H2 / H4N device with the ability to record in wav-files). Cubase (by example) offers the capability to read Video files and split sound and image information. If you apply this and add the soundtrack(s) of the external recorder you can optimize the sound using functions like equalizers, filters, compressors etc. Being comfortable with the result you can mix it down to a stereo track and replace the original mono sound track by the high quality and optimized stereo sound track of your external recording device. The K5 recorded mono track you can use to adjust the position of the stereo track within the video.
My conclusion: buying an external stereo mic with the intension to record stereo sound directly by the K5 might not lead to the sound quality you wish. Maybe an external recording device combined with an appropriate software is the better solution.
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