A495 porting thread

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Re: A495 porting thread
« Reply #310 on: 03 / July / 2011, 13:51:26 »
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I'm not entirely sure what constant bit rate does


Keeps the bitrate constant !

Which means that if the scene becomes more detailed and/or there is increased movement, the frame-compression will have to be increased and video quality will therefore be reduced

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Online philmoz

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Re: A495 porting thread
« Reply #311 on: 03 / July / 2011, 15:54:42 »
If you're referring to the override to select 'Super Fine' JPEG compression this isn't enabled for the A495.
If I follow this thread correctly,  this is an issue with jpeg's and not video ?  It seems to have started with video and transitioned.

@philmoz :  I assume the is an issue with a #define in platform_camera.h ?  Is so, which one ?   The problem with that file is that there doesn't seem to be a way to know if something is missing - it doesn't look like every parameter is either #define of #undef.


JPEG quality override is enabled by adding
    #define CAM_QUALITY_OVERRIDE            1
to platform_camera.h

Phil.
CHDK ports:
  sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
  g12 (1.00c, 1.00e, 1.00f & 1.00g)
  sx130is (1.01d & 1.01f)
  ixus310hs (1.00a & 1.01a)
  sx40hs (1.00d, 1.00g & 1.00i)
  g1x (1.00e, 1.00f & 1.00g)

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Offline reyalp

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Re: A495 porting thread
« Reply #312 on: 03 / July / 2011, 16:02:29 »
@philmoz :  I assume the is an issue with a #define in platform_camera.h ?  Is so, which one ?   The problem with that file is that there doesn't seem to be a way to know if something is missing - it doesn't look like every parameter is either #define of #undef.

include/camera.h should be the master list, with a define/undef for anything that might appear in platform_camera.h, plus a descriptive comment.

*should* being the operative word ;)
Don't forget what the H stands for.

Re: A495 porting thread
« Reply #313 on: 03 / July / 2011, 16:52:16 »
If you're referring to the override to select 'Super Fine' JPEG compression this isn't enabled for the A495.
If I follow this thread correctly,  this is an issue with jpeg's and not video ?  It seems to have started with video and transitioned.

@philmoz :  I assume the is an issue with a #define in platform_camera.h ?  Is so, which one ?   The problem with that file is that there doesn't seem to be a way to know if something is missing - it doesn't look like every parameter is either #define of #undef.


JPEG quality override is enabled by adding
    #define CAM_QUALITY_OVERRIDE            1
to platform_camera.h

Phil.

@philmoz :  are you going to post a patch ?


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Online philmoz

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Re: A495 porting thread
« Reply #314 on: 03 / July / 2011, 18:21:42 »
@philmoz :  I assume the is an issue with a #define in platform_camera.h ?  Is so, which one ?   The problem with that file is that there doesn't seem to be a way to know if something is missing - it doesn't look like every parameter is either #define of #undef.

include/camera.h should be the master list, with a define/undef for anything that might appear in platform_camera.h, plus a descriptive comment.

*should* being the operative word ;)

There's an '#undef' in camera.h; but the comment leaves a bit to be desired.

I'll post a patch for the A495 and update the comment in camera.h later - unless waterwingz beats me to it.

Phil.
CHDK ports:
  sx30is (1.00c, 1.00h, 1.00l, 1.00n & 1.00p)
  g12 (1.00c, 1.00e, 1.00f & 1.00g)
  sx130is (1.01d & 1.01f)
  ixus310hs (1.00a & 1.01a)
  sx40hs (1.00d, 1.00g & 1.00i)
  g1x (1.00e, 1.00f & 1.00g)

Re: A495 porting thread
« Reply #315 on: 04 / July / 2011, 00:30:09 »
unless waterwingz beats me to it.
I'm on vacation this week - laptop only, no build machine with me. :P

Re: A495 porting thread
« Reply #316 on: 06 / July / 2011, 16:11:16 »
OK! I have some news:
How the camera detects that a card was inserted??

Today I was experimenting with a 2GB kingston microSD with the adapter. But, when I turn the camera on in playback mode and without the card in the adapter, it says "Memory card error" & "Card locked" both with the adapter locked and unlocked.

When I take the adapter out, the camera detects correctly that there's no card inserted.

Does this information helps with my 16GB card issue?
Anyone else had this problem too?

Thanks!

Re: A495 porting thread
« Reply #317 on: 10 / July / 2011, 09:12:13 »
For the Aussie members. Dick Smith are selling Canon A495 for $68.00.

I purchased two and used CameraVersion13-sfx to read the version number from a photo.

Both read version 100 on the exif data.

I purchased my first Canon A495 about two months ago. That version reads 100 as well.

I have read through the posts in this thread, which is the best A495 CHDK to use with a version 100?


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Offline whim

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Re: A495 porting thread
« Reply #318 on: 10 / July / 2011, 09:52:49 »
Quote
I purchased two and used CameraVersion13-sfx to read the version number from a photo.

Both read version 100 on the exif data.

Use CameraVersion13's button "Phil's site" to browse to the exiftools site, download the Windows Executable (currently 8.60) and update (just drop 'exiftool(-k).exe' in the directory with CameraVersion13.exe and restart)

hth,

wim

PS above tested to work on a JPG from A495 / 100e
« Last Edit: 10 / July / 2011, 10:00:11 by whim »

Re: A495 porting thread
« Reply #319 on: 10 / July / 2011, 11:00:08 »
@whim,

Installed exiftool

Scrolling in main page

Firmware Revision 1.00 rev 6.00 displayed.

 

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