Can't record video from S60 Python on an N93, how do I record video at 640x480?

Submitted by Roland on Fri, 2007-11-09 02:37

Aaargh, it turnes out (thanks to Forum Nokia people for responding to my query!) that I can't record video from S60 Python on an N93 (see my earlier S60 video python post) without installing a MultimediaDD certificate which for some reason (bug?) is not present on an N93. Please Nokia update the N93 firmware to include he Multimedia DD certificate !

Questions:

  1. Since it's extremely unlikely there will be further N93 firmware updates, how do I install a Multimedia DD certificate on my N93?
  2. How do I get camera.start_record() to record 640x480 video on an N95? Is there some size parameter I need to specify in order to record at 640x480 resolution? There is nothing in the docs about a parameter that specifies the video resolution

 

tags:

Comments

olly (not verified)

Fri, 2007-11-09 12:34

Roland -- if you send yourself the Cert via bluetooth, then open the message it will know what to do with it automatically ;)

Gotta love S60 simplicity.

-olly

Roland

Fri, 2007-11-09 13:22

thanks Olly, do you have a cert you can send me or a link to how to build a cert? (I'll google around of course but if you have a link or 2 handy i'd be eternally grateful and would love to buy you a coffee/beer/tea when you are in Vancouver)

olly (not verified)

Fri, 2007-11-09 14:47

Unfortunatly I don't have one... I know there is a procedure for building a cert (I've seen it on HowardForums before, in the S60 section), but I have no clue. 

Never been to Vancouver, quite honestly... which is a shame (and something I need to change), considering I live in Seattle! ;)

I'll be keeping an eye on this though for use on my N95! 

-olly

Roland

Sat, 2007-11-10 08:41

becausse it has the MultimediaDD capability cert built or some such

 i'll post what i find!

c'mon down to MobileCamp Vancouver on November 24th, i'll be there and we can hack on our N95s! 

Kevin Tom (not verified)

Sun, 2007-11-25 12:39

so after reading your post,

i think i understand your situation better.
as far as getting a certificate you need to go to symbiansigned.com to get one, and you should probably have a dev certificate anyways since they do come in handy while doing dev work.
as to the post about installing the multimediaDD cert, it really depends on whether or not you need to sign python apps in addition to having the python interpreter signed.  i haven't done python on s60 so i am not sure about this point but basically the way it works with certs is that you are limited by the weakest cert in all your dependencies.
so if i write a video codec for s60 which only uses the basic level api calls so i sign it as such, and then a developer uses my library in his network aware app, i have to resign my video codec lib with network level certs or else the developer won't be able to make those network calls.
Correct me if i am wrong, but reading this post it sounds like you cannot record video on either your n93 or n95?
if this is the case, then i would think the python interpreter was not signed with certs that would allow it to use all the api(s) you need.

Roland

Sun, 2007-11-25 23:24

so it's not the python interpreter since I am using the identical one on both the N93 and N95

It's the N93 and probably it's lack of a cert

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