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Seamless end-of-video file transition

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Re: Seamless end-of-video file transition
« Reply #10 on: 24 / March / 2012, 01:52:46 »
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- We could collaborate. This seems to me to be the best option; and, indeed, to be the whole point of having forums. A more experienced CHDK coder could give me pointers (i.e. mentor me). If the more experienced coder knows from the start that solving A and B is physically impossible, then (s)he could say so and this would be constructive since it would avoid time being wasted. Alternatively, if the more experienced coder knows which approaches might be most likely to solve A and B then (s)he could say so, and I'd try them out and report back, which would speed me on my way much faster than if I were having to work it all out for myself. So this approach is much less of a gamble.
The way CHDK tends to work is that a person who cares about an issue digs in and works on it.  There is no "staff" of developers just waiting for something new to do.  So your option 1 & 3 are pretty much the same thing .. if you go after this, you will find that the small group of active CHDK devs ( somewhere between 1 and 8 by my count) will certainly help out where they can.

Thanks; that's more like it :)

There are a number of experienced coders who might offer advice. However, to collaborate, you have to bring something to the table. In this case, that means:
1) Be able to reverse engineer ARM binaries. If you can't analyze disassembled ARM code, you aren't in a position to do much.
2) Be willing to spend a LOT of time on it. Unless you are a wizard at #1, I'd guess hundreds of hours, but you might get lucky. You might also invest the time and find it isn't possible...

You may find srsa_4c research into the video tasks useful. See his wiki user page here http://chdk.wikia.com/wiki/User:Srsa_4c or view for posts by http://chdk.setepontos.com/index.php?action=profile;u=19252
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Since I'm clearly not the only person interested in having this functionality
The flip side is this has been a desired and requested functionality for a long time. If it were easy, it would be done.

I'm grateful for all the advice. I had a look at srsa_4c's pages, and I guess that the FileWriteTask or something like it might perhaps, if it applies to video recordings, be highjacked to redirect video data to new files as old ones reach the filesize limit.

But beyond that, it's beyond me, because I've never reverse engineered an ARM binary, and I'm probably not going to have hundreds of hours to spend on learning how to do so until at least a few years from now :( However, I'd like to learn how to hack firmware eventually, so I'm adding this to my long-term to-do list.

I guess that means that for the moment, I'll have to leave this problem for others to pursue, which I'm sorry about because you've been very helpful I'd like to contribute something that would be helpful to the community as well as to myself. But maybe you'll see me back in this thread eventually, older and wiser, if the video length restriction is still an unsolved problem. And maybe this forum thread will help another person like me, who has the same sorts of questions :)

Thanks again,

Sam

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Re: Seamless end-of-video file transition
« Reply #11 on: 24 / March / 2012, 02:33:32 »
sampablokuper,
I recommend You - Go to Cinema, watch Vdeo, and if you see scene longer than 2 minutes, just tell me.
IMHO, No need from continous video even 4 Gb with our P$S Cam's.If you preffer longer, buy special Video Recorder.

Re: Seamless end-of-video file transition
« Reply #12 on: 24 / March / 2012, 03:13:02 »
sampablokuper,
I recommend You - Go to Cinema, watch Vdeo, and if you see scene longer than 2 minutes, just tell me.
IMHO, No need from continous video even 4 Gb with our P$S Cam's.If you preffer longer, buy special Video Recorder.

I realise you're probably trying to help - thank you - but I'm afraid you're off-topic here. I've been shooting and editing videos for enough years to be reasonably well aware of how films are cut (which is a separate matter, by the way, from how they're shot), and what camcorders are capable of and why I'd rather use my Ixus in some cases. Also, I think you're forgetting what the "H" stands for :)

 

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