Re: Video editing in Linux?

From: SjT (NOT_at_yahoo.com)
Date: 11/03/04 

Date: Wed, 03 Nov 2004 17:06:01 GMT

Ian Molton <spyro@f2s.com> Kissed me, Licked me, then left me a note:

>>>Do you know what 'hacking' is?
>> no, sorry, not a clue.
>
>Clearly.

Maybe you could explain sarcasm to me too? ;)

>> Why the *** would i want to do that to you? I haven't got the time
>> or the desire to screw other people's machines up.
>
>To prove your assertion that its easy. I promise I wont sue you.

Well as it's got to affect you and only you i can't see how i can do
it without affecting other users, especially as you wouldn't run
anything that i was to send you direct?! ..If i was going to take
your challenge that is. ;)

>when you compile main.c, assuming we're talking of a multi-file project
>here, which you clearly are, you will get a main.o object file, with
>unresolved references in it.

I have never dealt with main.o in my life, i am referring to the files
before compiling, you seem to be referring to the files which are
created after you compile?!

Remember i'm using Visual C which is a fully integrated
compiler/linker so i literary create the main.c, #include any of the
headers i require and off i go. I'm always running functions which
make calls to those header files from main.c.

And when i modify the Z80 code i'm compiling down to a hex file to
burn onto an 512K M27C style IC, which again i use a custom made IDE.

Are you perhaps referring to CPP (C++) maybe?! I am going to be
learning that after xmas as i beleive it's quicker and is based around
object orientated programming.

> > a few ISP's block
>> ports 7001-7009 so forcing you to use alternatives causes a very very
>> slow download rate which is near unuseable.
>
>Huh? are you seriously suggesting some port numbers are slower than others?

No, if your ports are blocked it limits the number of connections that
are sucessfully made and thus slows the download rate. At least
that's my understanding of it. There may be issues with resolves as
well, but i dont know.

>> Yeah i've used RISC OS, as you say, very good, excellent at
>> multitasking.
>
>Actually RISC OS uses co-operative multitasking and any one app could
>hang the system easily. so no, not really.

Ok, looks like i'm getting confused, what i was thinking of was the
old Acorn machines that had the RISC CPU's that could multitask, i
could have sworn that was RISC OS running on them too .. it was a long
time back when i was at uni and everyone championed the machines to us
poor Amiga users. But all they could play was Lemmings. ;)

>> Not true, alot of hardware is cheap because they know the majority
>> would be using it on windows,
>
>That wasnt the case 15 years ago when all this started.

Exactly, MS have turned it around incredibly!

>The 'winmodem' is the only REAL example of this type of thing. not much
>else does its DSP work in software, barring audio.

It bought the prices down to an affordable level though, i remember
when modems were £120+ and then the winmodems hit and they kept coming
down in price month after month, I bought one soon as they went under
a ton just to telnet into college and some US national library..
Why!?! Just cause you could at the time! :D

To think how things have progressed is hugely thanks to microsoft.

>All this came AFTER windows was dominant anyway - because if the
>manufacturwers knew they could sell enough to putrely windows users to
>get away with it. this wasnt the CAUSE of windows rise.

No it was the standardisation and support that MS offered which
allowed manufacturers to utilise all these new cheaper internal soft-
devices.

Trouble was they were pretty *** on performance. But it enabled alot
of people to get into computing, most notably to get online and make
the net great.

Actually as i think about onboard devices it still amazes me now when
people overlook their motherboard when upgrading, it's the backbone of
any machine yet they spend shitloads on a CPU, get the biggest HDD
they can and then slop it all ontop of the cheapest ass bitch of a
motherboard.

>> That has bought hardware prices down, as the hardware only solutions
>> have to be competitive, on top of that Microsoft push alot of money
>> into pushing windows into homes and businesses and so the amount of
>> users grow, hence the hardware sales increases, thus lower prices.
>
>Indeed. the product is not being pushed on its own merits - hardly fair.

Isn't that the way of the world though?! Nothing is ever as good as
its made out, pretty much everythings a dissapointment when you buy
it, and it's because there's thousands upon thousands of people out
there who's sole purpose in life is to fool us.. grr!! conspiracies
etc.

I don't think you can blame MS for taking the same stance.

>> I don't know about monitoring your data from the radio, but all those
>> tasks are miniscule, i doubt your cpu even hits 10% of its potential
>
>Im talking 2048 point fourier transform...

*Ding* Lights out, won't even go near that one.

Interesting stuff though, with the radio astronomy had a brief
read-up, i bet it's all a bit weird to do, like quite surreal.

Have you ever found and submitted anything yourself?

>> (Thats assuming you have a modern processor) until you play a game or
>> re-encode video, hardly what i would define as pushing an OS.
>
>Hrm. Quake3 uses about 5%-10% of my CPU time (under linux). so much for
>that theory. all modern (3d type) games push the video card FAR harder
>than the CPU.

This is true, what CPU are you running then, Quake3 sounds very
efficient and it's a pretty quick game from memory.

Does linux take full advantage of your graphics card? ive got a really
old GF2 MX400 in my machine, chances of that being supported should be
quite good i imagine?

>Not to say there is nothing innovative about linux but really innovation
>only hapepns at the very edge of the software world (no matter what your
>OS is).

I would say there's some great new innovative software out there, for
example what some video apps offer you is amazing, and would've taken
days to perform, the same with Audio apps, i keep praising Cubase, but
i was able to throw my guitar pedal out for a simple DSP plugin which
sounds way better and i'm able to save my guitar settings with the
song, it's really odd and quite amazing for a musician.

To be able to load up a video project or audio project and everything
is how you left it is amazing when you consider i used to be hooking
videos up to one another and cutting and sticking tape, or spending
hours getting my sound levels right.

For me that is innovation, changing the way you work.

As Alan said, I evolve but i don't... revolve. :D

>the USA is aggressive in its international relations, yet I doubt many
>would take their hat off to them...

Pah! those that don't take their hats off a mainly jealous of their
success, i myself am not of that nature at all, for example i could
charge people a fortune for help fixing their computers but i hate to
see people get ripped off through computing so i only really charge
enough for petrol and enough to get me a takeaway at the weekend..
That keeps me happy and saves them a fortune. Trouble is they always
come back and sing my praises to everyone they know.

>> But that's not modifying the norton code is it?! nuke.exe would be
>> eaten up by the virus checker upon coming down from the net.
>
>I suggest you test your theory there. I bet you a script containing that
>code would sail straight through.

A script? i thought you meant rename nuke.exe to norton_setup.exe or
whatever and then send it?

I don't know which programs get picked up by my virus checker and
which don't but i know for sure i tried to download a nuke script for
irc and it denied me access to it.

Actually, thinking about it, chances are the file had a virus, so
could have been for that reason.. duh.

>On linux when you run a program it runs with the priveliges of the user
>who launched it. since the applications and system setup are owned by
>root, and any non-stupid user would never be running as root, it is
>impossible (barring an exploitable kernel bug) to alter those files.

If you could gain access to the admin password could you log in as
admin via software?! or does it always require user authorisation,
i.e. no auto/remote loggins allowed?

>patches ONLY show the *differences* between the original and the
>modified version. any attempt to insert malicious code would stick out
>like a sore thumb. thats the reason large patches are often rejected out
>of hand btw - they are too hard to read properly.

When you say a patch showing the differences, do you mean someone runs
a compare on the provided files, or it's up to the author of the
latest mod that submits this patch that shows the differences?

>> And what if the app in question requires admin rights? Would you
>> question that?
>
>I certainly would. but you can still test those by using a chroot
>environment, the rest of the system remains safe. (to a point).

So if i'm using linux next week for example and install a piece of
software that asks me to log in as admin, should this ring alarm
bells?

>> Is there ever a time when code is not approved for being too big or
>> deemed not to be useful, yet there is a demand for it so to obtain
>> this 'extra' version you would have to use non-official means?
>
>Yes, however then you are really on your own and likely heading into
>developer-only sort of territory. One cant defend a truely determined
>idiot...

..One in the making here ;)

>> It's hardly doing nothing.. it's serving all our users here, admit it,
>> in the right hands windows is pretty useful and does what it says on
>> the tin ;)
>
>You mentioned its serving about 2-3000 emails a day. a 386 could do that
>running linux...

Yeah i know that, so could a P2 Running Win NT hehehe :D

>It happens that linux is well though t out enough that despite
>considerable incentive there are no current examples out there. there
>was a work that targetted specific redhat machines once but that was a
>long while back now.

Must admit it sounds pretty good and i've built up a brief
understanding of it from you, all the root and user business reminds
me of when we used to telnet to each others machines at home to get
news feeds and emails to each other.

>Which is exactly what I said - you bjuought it with windows more in mind
>than linux, and you got what you payed for.

Well yeah, but i did deliberatly check if it was linux compatible, and
it turned out to be lies, so i did try guv'nor! :D

>Look, some DSP processes are commutative (use a dictionary). Others
>arent. there are, IOW, some effects where (theoretically) a near
>infinite number can be layered without any slowdown. If you use ONLY
>those, I'll agree with you.
>
>HOWEVER not all effects can be done this way. you ARE WRONG.

LOL so i'm wrong and right at the same time.

All i was saying that the software i use is like that, chances of
commutative DSP's coming to linux are... ?

>> Excellent cheers for those, very interested to see how cinelerra, main
>> actor and rosegarden compare to what i use currently.
>
>Bear in mind I have never as much as downloaded rosegarden, cinelerra or
>mainactor. YMMV.

Nah no problem mate, but they all look very good, especially
rosegarden, it wont have the plugins i use which is an important
factor.

What do you think are the chances of somehow being able to convert a
PC plugin to a plugin within a linux application?

Most of them are just .dll's, is this a possibility? 

-- 
Playing: FIFA 2005.... Thats it atm
Awaiting: PES4 & HALO2 (Yawn yes i know)