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sd600 video compression

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Offline gmver

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sd600 video compression
« on: 15 / January / 2009, 13:55:13 »
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I have a sd600 with chdk

ixus60_sd600-100a-0.9.1-678-full

running.

I'm trying to figure out how to apply video compression. My video time with chdk on and off is the same and I'm using a 4Gb card. I figured with chdk off it would limit to 1G, but it's the same.

I'm basically trying to get more video time on the same card.

I've been researching with no luck.

In the sd600 menu there is no option for "video parameters".

When I have chdk on, select video mode, hit the alt button and select up i change the variables in the top left

sd:1408
factor:1 (goes from 1-1000)

I change these  options but no difference in video size. I'm not even sure what they mean.

Any ideas or help?

Thanks,

gmver
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Offline fe50

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Re: sd600 video compression
« Reply #1 on: 16 / January / 2009, 05:27:05 »
Hello & welcome in the CHDK forum, gmver !

Quote from: gmver on 15 / January / 2009, 13:55:13
...I'm trying to figure out how to apply video compression. My video time with chdk on and off is the same and I'm using a 4Gb card. I figured with chdk off it would limit to 1G, but it's the same.
...In the sd600 menu there is no option for "video parameters".
Unfortunately the CHDK version for the Ixus60 / SD600 do NOT support the video overrides yet, therefore this menu item is missing.

Quote
When I have chdk on, select video mode, hit the alt button and select up i change the variables in the top left
sd:1408
factor:1 (goes from 1-1000)
I change these  options but no difference in video size. I'm not even sure what they mean.
This is the 'Override Subject Distance' feature from the Extra Photo Operations menu, see also more informations about it here: Override subject dist.value.
The shortcut keys for the SD override are described here: Quick-Set Hyperfocal & Infinite Manual Focus Distances.
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Offline gmver

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Re: sd600 video compression
« Reply #2 on: 16 / January / 2009, 09:03:53 »
Thanks for the response.

Do you know where would be the best place to check occasionally to see if they integrate video overrides for the sd600?

Thanks again,

g
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Offline fe50

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Re: sd600 video compression
« Reply #3 on: 17 / January / 2009, 06:40:03 »
Quote from: gmver on 16 / January / 2009, 09:03:53
Do you know where would be the best place to check occasionally to see if they integrate video overrides for the sd600?
You can check this from time to time on the SD600's wikia page (SD600)

I added it also to the CHDK Bugtracker: #204 - Video overrides for SD600 (feature request), you can monitor this issue / feature request there...

But since the SD600 is an very old model & the porting was done long time ago, it is not very likely that it will be added soon...it needs good assembler knowledge, not easy to implement...
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Offline ewavr

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Re: sd600 video compression
« Reply #4 on: 21 / January / 2009, 06:42:23 »
Well, test versions with video support for IXUS60 are attached to this post (with optical zoom, but without AF).

(edit: deleted)
« Last Edit: 31 / January / 2009, 11:46:38 by ewavr »
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Offline ewavr

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Re: sd600 video compression
« Reply #5 on: 24 / January / 2009, 15:41:14 »
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Offline msl

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Re: sd600 video compression
« Reply #6 on: 25 / January / 2009, 11:10:45 »
A user of the german forum reported that it does not work.

The cam (firmware 1.00a) crashes by using the video recording function under different settings.

But a big thanks for your great job, ewavr!

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Offline ewavr

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Re: sd600 video compression
« Reply #7 on: 25 / January / 2009, 11:56:50 »
Quote from: msl on 25 / January / 2009, 11:10:45
A user of the german forum reported that it does not work.
The cam (firmware 1.00a) crashes by using the video recording function under different settings.

If camera crashes even with default settings (mode=bitrate, bitrate=1x) this feature will be disabled, because I can't find error (at least without this camera).
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Offline msl

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Re: sd600 video compression
« Reply #8 on: 25 / January / 2009, 15:34:03 »
Yes, the user wrote, the cam crash also by setting the bitrate=1x.

Pity that no one else this feature tests.
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Offline ewavr

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Re: sd600 video compression
« Reply #9 on: 25 / January / 2009, 18:53:11 »
Sorry guys, in rev.693 video parameters are removed to avoid camera crash in video mode (I can't find bug there).
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