550D/T2i raw video recording port official thread

[Trombom]

Because that's the way it works.

The raw videos are the LiveView images. And if you use a resolution that is smaller than 1734 X 1155 that's just a crop of the whole image

Very thanks going to try.

[CFP]

Thanks for nothing.

Do you realize that he's one of the developers which made this amazing feature possible? They are sacrificing their time to push our little cameras to the limit. "Thanks for nothing" ... No offence but that was a realy stupid comment. Without a1ex we wouldn't even have the RAW feature on any DSLR

[MaKsOZ]

Without a1ex we wouldn't even have the RAW feature on any DSLR

We wouldn't even have Magic Lantern...

[core_32]

We wouldn't even have Magic Lantern...

We wouldn't even have DSLRs 

[MaKsOZ]

We wouldn't even have DSLRs 

Lol, we wouldn't be alive also maybe

[Ivoprod]

Progress , thank you Guys for doing this ! 1280x512(2.50:1) - 24fps - 7sec , 1344x538(2.50:1) - 24 fps - 5 sec , 1344(3:1) 24fps - 9 sec, 1280(3:1) 24fps - 13 sec

,ADATA 32GB Class 10 Max write it can give me is 16.8 MB/S , ML_550D_June_20_2013_Update01

[CFP]

We wouldn't even have Magic Lantern...

A1ex != Trammell Hudson ... Or have I missed anything?

[jagnje]

hey jagnje,

i recorded it in 50 fps. interpreted as 25 fps or slowed down to 50% gives you a flawless 1/2 speed real slow motion.
if you slow it down by another 50% using sth like twixtor or the foundrys kronos or the retime component of saphire plug ins or any other software using optical flow you can get a real good 1/4 speed interpolated slomo.

but it´s important to shoot with the highest shutter speed possible. the less motion blur you have in your images the better the motion flow based image interpolation works. you can even lower the software slow motion to 25% and still get medium to good results.
but the algorithms really start to struggle with those speeds and warping becomes more and more visible (see the close of the fountain).
it also depends on the image content.

it´s more something to play with than with real value

ok, I know about twixtor...haven`t been able to use it in a manner that I would be pleased, but I haven`t tweaked it much yet. I just thought that your footage was without twixtor, that that much vector information is unlocked in RAW, because if it was that would be really good Filming skateboarding in super slo-mo without renting expensive cameras...
oh well
Can`t wait for a stable release with at least 15sec of flawless continous footage.

[tactzer0]

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[dpiximaj]

with a1ex latest patch I'm getting consistently 1400 - 1490 frames @ 23.976 1280 x 426, Extreme 45mb card woohoo! Thanks!

[jagnje]

that would be my setup exactly. can you post a clip or two of the footage?
cheers

[rideBMX]

@dpiximaj

I just wanted to ask, how did you get so much frames? I had the exact same setup (45mb SanDisk, 1280 x 426 @ 23.976) and I got 820 - 830 frames consistently.

Could you please tell me what your other settings were?

Thanks a lot!

[Rewind]

I just wanted to ask, how did you get so much frames? I had the exact same setup (45mb SanDisk, 1280 x 426 @ 23.976) and I got 820 - 830 frames consistently.
Could you please tell me what your other settings were?

Just tried 1280x426 at 23.976 fps — i got 1689 frames on Sandisk extreme pro 95 mb/s
Make sure your global draw is off. Otherwise your card may be a bum.

[rideBMX]

Just tried 1280x426 at 23.976 fps — i got 1689 frames on Sandisk extreme pro 95 mb/s
Make sure your global draw is off. Otherwise your card may be a bum.

I also turned Global Draw OFF :/

[hammermina]

i got countinius shooting at 1280*388 in 720p mode at 23,97fps
and in 1080p mode at 1280*544 191 frames..

on my lexar 30mb/s

massive;-)

[Rewind]

I've added a couple of numbers to raw_rec.c and now i'm getting around 490 frames (>20 sec) with 1200x500 (nice 2,4:1 aspect ratio). Stable, no pink frames. This is already enough for me to film entire short totally in raw workflow.

550d
1080p 24 fps mode
23.976 fps override
global draw off
Sandisk extreme pro 95 mb/s

p.s. I've added just a 1200 px to the list of resolution choices and my favorite 2.4:1 aspect ratio.
I guess there are much more aspects affecting resolution choices, like DMA cropping routines etc, but 1200 works for me.

upd. Latest A1ex's optimizations (speculative start) doesn't give me any performance increase (as he mentioned, they won't), but either doesn't produce any bugs or artifacts like empty frames etc.

[MaKsOZ]

Would you mind sharing your build ?

[JuanIrache]

This is starting to look quite good! Thanks devs!

I've just found out that my fastest cards are not the Transcends (as I thought, while I wait for the Sandisks*), but one called MFC that I hadn't even bothered testing. The Transcends write around 15-16mo/s, while this one gets to 18-19mo/s if the recording lasts a bit.

The problem is that the speed is very inconsistent. Sometimes it starts at 15mo/s and goes up, but some other times it shows 4mo/s or lower and the buffer gets filled quicker. I have the impression A1ex's last update (speculative start) might help a bit... don't know how to check this for sure, as the problem is randomish. Has this been studied? I remember this card was really cheap back when I bought it.

[qsara]

ML on 550D works best with Sandisk Extreme (new) Series, 30MB/s & 45MB/s, don't bother getting a 95MB/s because it is both expensive and 550D has 21MB/s bottleneck on SD controller

[JuanIrache]

ML on 550D works best with Sandisk Extreme (new) Series, 30MB/s & 45MB/s, don't bother getting a 95MB/s because it is both expensive and 550D has 21MB/s bottleneck on SD controller

I know, I actually meant Sandisk Thanks

[Rewind]

Would you mind sharing your build ?

ML raw rewind 1

- Latest speculative start optimization
- 1200 px horiz. rezolution and 2.4:1 aspect ratio added

Upd. multiples of 16 works better, so i edited 2.4:1 into 2.42:1, this gives me 1200x496 and 500+ frames.

[Rewind]

ML on 550D works best with Sandisk Extreme (new) Series, 30MB/s & 45MB/s, don't bother getting a 95MB/s because it is both expensive and 550D has 21MB/s bottleneck on SD controller

Disagree. My 8GB Sandisk extreme pro 95 MB/s gives me 30 to 50% more frames than 8GB Sandisk extreme pro 45 MB/s.
I think the reason is that 45 MB/s Sandisk cards have real write speeds just in the range of the sd controller's bottleneck (20-21 MB/s), whereas the 95 MB/s ones speeds exceeds this values.

[CFP]

My 8MB Sandisk extreme pro 95 MB/s gives me 30 to 50% more frames than 8MB Sandisk extreme pro 45 MB/s.

8 Megabyte? How do you shoot RAW on these thing?

[Rewind]

8 Megabyte? How do you shoot RAW on these thing?

Typo ) Post now corrected

[qsara]

Disagree. My 8GB Sandisk extreme pro 95 MB/s gives me 30 to 50% more frames than 8GB Sandisk extreme pro 45 MB/s.
I think the reason is that 45 MB/s Sandisk cards have real write speeds just in the range of the sd controller's bottleneck (20-21 MB/s), whereas the 95 MB/s ones speeds exceeds this values.

I'm able to record 1250 frames with 45MB/s where you can record 1440 frames with 95MB/s, its not a 30 to 50 percent increase