whotookmyaccount@yahoo.com.au (bikeless) wrote:
> Is there any way to convert a mediarecorder temp file into
> a playable movie?

No idea, but ya never know...


> I've captured some stuff from using the video input on an
> o2, using the "Cross-Production Video JPEG" setting in

Cross production?... I just use PAL or NTSC and leave it at that.


> mediarecorder (yeah yeah i know, "use dmrecord" - i haven't
> found any settings that i'm completely happy with).

Ach, yes, dmrecord is more efficient, but mediarecorder works
fine (btw, I asias it to 'mr', 'cos I'm lazy

QuickTime SGI JPEG full-size full-rate split-field constant bit
rate, no problem every time. Or for PC compatibility, use MJPEG-A,
then have a PC with PIC JPEG codec, RAD Video Tools, DrDivX, Virtual
Dub and TMPGEnc. Works a treat! If you want an example, check my
advert site which shows an O2 for sale. There's a movie for download
(not yet mentioned by the page) which I captured using my O2 and
then converted to DivX using my PIII/500 laptop. Here's a direct
link:

http://www.futuretech.blinkenlights....t/o2movie1.avi

(you'll need a PC or other platform with the latest DivX codec to
play it of course)

I've made an MPEG1 version for SGI users, but I won't be able to
upload that until next week (dumn 28k dialup).

Btw, using the above settings on a Cosmo1 Indigo2, I captured ALL of
Phantom Menace, over 2 hours full-size/rate PAL, without a single
frame drop.

NOTE: when using MJPEG-A, the 'live' update smoothness isn't as good
during capture, and the post-processing is slower, but it will still
do it without frame drops. I guess it's currently optimised for
SGI JPEG. Note that it helps if the signal is clean. A disruptied
video signal will cause frame drops.

MEGA TIP: use IRIX 6.5.15m. Later releases have bugs. Yeah, yeah,
I'll write a page on all this at some point... lemme move house
first.


> dmconvert and mediaconvert choke on it, but i figure that's
> because i have NFI what i'm doing. `Playing' the file shows
> the (horizontally-stretched) first image, but nothing beyond.
>
> Is this 12Gb file a waste of space?

Is it possible to import it into moviemaker?

Cheers!

Ian.

SGI Depot: http://www.futuretech.blinkenlights.nl/advert/ian.html
Email: mapesdhs@yahoo.com
Mobile: 07743 495403 (usually off; leave a message and I'll call back)

SGI/Future Technology/N64: http://www.futuretech.blinkenlights.nl/
Doom Help Service (DHS): http://www.gamers.org/dhs/
BSc Dissertation (Doom): http://www.gamers.org/dhs/diss/

Ian Mapleson wrote:

> QuickTime SGI JPEG full-size full-rate split-field constant bit
> rate, no problem every time. Or for PC compatibility, use MJPEG-A,
> then have a PC with PIC JPEG codec,

or just use Quicktime Pro

> NOTE: when using MJPEG-A, the 'live' update smoothness isn't as good
> during capture, and the post-processing is slower, but it will still
> do it without frame drops.

what do you mean with "live update"?

> I guess it's currently optimised for
> SGI JPEG.

Interesting - I didn't see any performance differences whether I was
using MJPEG-A or SGI JPEG.

> Note that it helps if the signal is clean. A disruptied
> video signal will cause frame drops.

yep.

> MEGA TIP: use IRIX 6.5.15m. Later releases have bugs. Yeah, yeah,
> I'll write a page on all this at some point... lemme move house
> first.

no, I wanna know that now



Cheers
Andreas

Andreas Backhaus wrote:
> or just use Quicktime Pro

Oh haha.


> what do you mean with "live update"?

I mean when it's recording, watching what it's recording in the window.
With SGI JPEG, this is pretty smooth (with Cosmo it's flawless), but
with MJPEGA it's a bit jerky, though it doesn't affect the recording.


> Interesting - I didn't see any performance differences whether I was
> using MJPEG-A or SGI JPEG.

I definitely see a slower post processing when using MJPEGA.


> no, I wanna know that now

Hmmm, ok, lemme see, suspend house move, spend 2 months writing page,
wasted prepaid rent, cancelled sales, pi$$ed off gf, etc... yes, the
fee would be around $15K - you got that much? ;D

Other tip for all & sundry: turn off mediad and the webserver when doing
stuff, and always do it as root. Oh, and when you're grabbing from a
PAL source, change the monitor to 50Hz. Similarly use 60Hz for NTSC grab.
Ditto for playback.

I know there's 75Hz, but I'm not that keen on the idea; not an even
divider, etc.

Ian.