Forums > Jitter

framedump

May 27, 2006 | 2:01 pm

Hello list.

Yesterday i posted a question about how to play a movie from one given
"frame" to an other one.
Finaly, i found this framedump message which does what i need.
The thing is, when you send the message "framedump [frame-start (int)]
[frame-end (int)] 0"
It works but it has a lot of latency !!!

Do you know a way to reduce this latency time ???

Thanks for your help and suggestions.

Do widzenia.


May 27, 2006 | 3:16 pm

Well, framedump is going to put out every frame you ask it to as fast
as it can. If you tell it to put out a lot of frames, it’s obviously
going to take some time. If you tell it to put out 10 frames, it will
be quite fast. This is no magic bullet. It has to access all of the
memory you tell it to and will be correspondingly slow. If you need
something that happens more gradually so that it doesn’t block the
program, you can roll your own with the frame message.

wes


May 27, 2006 | 3:32 pm

yes, silly question.
That’s what i did and i got what i wanted… just using a simple counter
object…
Silly me.
Sorry about that.

Czesc


June 10, 2006 | 8:10 am

Sorry, I seem to have missed this message.

framedump has to count the frames up to the frame-start. If you have
a long movie, and a frame-start which starts later into the movie,
this can take a moment. Once it gets going, it should be nice and
fast, though, depending on compression settings, etc..

jb


June 23, 2006 | 7:11 am


June 23, 2006 | 2:33 pm

Sorry, your patch + your email have me confused. Are you saying it
works when you send "framedump frame_start number", but not when you
just send "framedump frame_start"?

Also, that 2nd number is not "frame_end". It’s "number of frames to
dump". By default, it’s the total number of frames minus frame_start.

jb

Am 23.06.2006 um 09:12 schrieb czesc.list@laposte.net:

> I simply want to play it back you know.
> Here is the patch that i use to do this…
> You just have to send a list of two values : frame_start(int)
> frame_end(int)


June 23, 2006 | 3:17 pm


June 23, 2006 | 3:24 pm

First of all, you need to calm down.

Second of all, you need to collect your thoughts into a concise,
logical form that allows me to understand what vague terms like
"cannot do", "doesn’t work" and similar mean.

1. what is the message you are sending: I don’t care about your
counter or anything else. What is the message you are sending to
jit.qt.movie?
2. what are you expecting to see?
3. what are you seeing instead? is Max crashing? is Max hanging? is
Max ignoring your message? is Max sending an error message to the Max
window?
4. (bonus questions) what values do you get reported when you send
the "getframecount" message, the "getfps" message, and do you see the
correct image when you send a "frame_true (my desired frame #)" message?

Any additional info would be helpful. But please, keep it calm and
keep it clear. Otherwise, your time disappears faster.

jb

Am 23.06.2006 um 17:17 schrieb czesc.list:


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