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speed of SD card in Kodak

 
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droci11o

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Since: Jan 09, 2006
Posts: 4



(Msg. 1) Posted: Mon Jan 09, 2006 7:25 pm
Post subject: speed of SD card in Kodak
Archived from groups: rec>photo>digital, others (more info?)

Hi there,

I bought a Kodak EasyShare C330 camera and a standard Toshiba 256MB SD
card. According to the manufacturer's specifications, the card has a
read speed of 7MB/s (x40), and a write speed of 2MB (x13). I am now
scratching my head -- should I have bought a higher-speed SD card, say
the recently released "pro" cards which have a speed of 7MB (x40-45)
both for read and write ?

The camera works in all regimes (taking the still pictures, recovery,
viewing etc) with the Toshiba SD card within the time limits, specified
by Kodak. Which is to say, the writing/reading to the card is
determined by the sower camera and not by the card. But I have a
problem with recording the video. When I play back the videorecording
from my computer, the audio gets interrupted for a fraction of second
every 3 seconds, and the video seems to be OK. Kodak camera writes
video in the format QVGA (320 × 240pixels) at 20fps. This gives about
1.5MB/s data stream. It can be too much for the SD card, but I presume
the camera compresses the video stream which is written to the card. So
that the write speed of my Toshiba SD card should be al'right for the
correct performance of my Kodak camera. What could then the reason be
for interruption of audio in video writing ? Thanks.

(Perhaps, I should try to write videorecording to the internal 16MB
memory and see if there is any disruption of videorecording as compared
to the external 256MB card... I will try it tonight).

Regards,
\/

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Steve Irwin

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Since: Jan 20, 2006
Posts: 3



(Msg. 2) Posted: Tue Jan 10, 2006 5:17 am
Post subject: Re: speed of SD card in Kodak [Login to view extended thread Info.]
Archived from groups: rec>photo>digital (more info?)

droci11o RemoveThis @yahoo.com wrote:
«SNIP»
> The camera works in all regimes (taking the still pictures, recovery,
> viewing etc) with the Toshiba SD card within the time limits, specified
> by Kodak. Which is to say, the writing/reading to the card is
> determined by the sower camera and not by the card. But I have a
> problem with recording the video. When I play back the videorecording
> from my computer, the audio gets interrupted for a fraction of second
> every 3 seconds, and the video seems to be OK. Kodak camera writes
> video in the format QVGA (320 × 240pixels) at 20fps. This gives about
> 1.5MB/s data stream. It can be too much for the SD card, but I presume
> the camera compresses the video stream which is written to the card. So
> that the write speed of my Toshiba SD card should be al'right for the
> correct performance of my Kodak camera. What could then the reason be
> for interruption of audio in video writing ? Thanks.

sounds to me like it could be a problem with your pc rather than the
camera/card. have you tried viewing the movie on a different pc, or on
the camera itself? (you can do this on canon powershot, not sure about
kodak.) could just be something as simple as needing the correct audio
codec.

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droci11o

External


Since: Jan 09, 2006
Posts: 4



(Msg. 3) Posted: Tue Jan 10, 2006 6:06 am
Post subject: Re: speed of SD card in Kodak [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Steve Irwin wrote:
> droci11o.TakeThisOut@yahoo.com wrote:
> «SNIP»
> > The camera works in all regimes (taking the still pictures, recovery,
> > viewing etc) with the Toshiba SD card within the time limits, specified
> > by Kodak. Which is to say, the writing/reading to the card is
> > determined by the sower camera and not by the card. But I have a
> > problem with recording the video. When I play back the videorecording
> > from my computer, the audio gets interrupted for a fraction of second
> > every 3 seconds, and the video seems to be OK. Kodak camera writes
> > video in the format QVGA (320 × 240pixels) at 20fps. This gives about
> > 1.5MB/s data stream. It can be too much for the SD card, but I presume
> > the camera compresses the video stream which is written to the card. So
> > that the write speed of my Toshiba SD card should be al'right for the
> > correct performance of my Kodak camera. What could then the reason be
> > for interruption of audio in video writing ? Thanks.
>
> sounds to me like it could be a problem with your pc rather than the
> camera/card. have you tried viewing the movie on a different pc, or on
> the camera itself? (you can do this on canon powershot, not sure about
> kodak.) could just be something as simple as needing the correct audio
> codec.

Thanks for your reply. Previously, I played back the videorecording
from the SD card which I inserted into the built-in SD card reader in
my PC. I got interruption in the sound in the playback. Now I
transferred the movie file from the SD card onto hard drive of my PC,
and the videorecording played back with no problems.

So, this meant that the speed of playback directly from the SD card was
slow. The slowest part could not be the SD reader, because it is
in-built and I presume it has a speed of transfer of >10MB/s. I
transferred a 15-MB file to and from the SD card, and I got the speed
of writing of 1.2MB/s, and the speed of reading of 1.7MB/s. This
reading speed was much less than the speed of 7MB/s stated on the
Toshiba manufacturer's website for this kind of card. I am
disappointed. I had an option of buying a cheaper "no-name" card with
7MB/s write and read, and I did not. I am biting my nails with
annoyance. The only comfort for me that the Toshiba's card is made in
Japan, and any available "no-name" card was made in Taiwan or China,
thus more reliability. Or am I wrong ?

Regards,
\/
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