Messages

Success!!



extracted 200 Full-res Silent MLV ETTR pics

Thank you

yeah, am just documenting for the developer to analyze

DELETE, problem solved, cleaning forum

DELETE, problem solved, cleaning forum

[0x024c585c]

@g3gg0

your math sound right but I could swear when i shot it.. it was 102 pics.  also there was a file  name 101 when i extracted fail.  Possible it didn't write the next chunk ... am pretty sure I would copy to hard drive if there is more.  anyway thnx for testing... am going to test recover on a 9gigs shoot now.  5 segments

EDIT:  I just notice when doing mlv_dump -v  on the next set of files  the error is at the same offset

[ERROR] Invalid block size at position 0x024c585c

andludo, should tell us where you buy the fake card from so others can avoid.  damn, that sucks

DELETE, problem solved, cleaning forum

Hi g3gg0

I have a bad MLV file 2gigs  102 pics

I used your  method and were able to extract dng00 to dng55  (56 good ones)  and a dng101 (bad one)

still missing more files.  am unable to find the next error offset

well, my 142 pics shot as DNGs and not MLV came out OK.  Not a single corrupted file.  Just no EXIF info in any of them.

I dont think the problem is mlv_dump because previously other programs were able to extract from MLV  but they have black bars issue.  Now those  programs can't even open these large MLV.

now try again, same amount, but this time using DNGs.  See if you will get any corrupted frame.  i sent you a PM

DELETE, problem solved, cleaning forum

Maybe, but only with ETTR on ?

I don't know  I have never shot Full-res silent MLV this many frames.  we were doing 5 or 10 frames to solve the mlv_dump problem.

I just got done with 102 shots.  the single MLV fail to extract.  gave me only one file name 101 and that cant be open with ARC.

Going for my fourth try now.... but this time I will use DNG and ETTR  not MLV    for around 100+ frames.  My theory is if a frame get corrupted, with DNG the rest can be save but a similar corrupted frame may kill the whole MLV and its chunks.

maybe it has to do with splitting in chunks.

I notice each chunk is 2 gigs.  I was expecting 4 gigs for each

crap, am in trouble now



it produce one file number 109  and that dng cant be open with ACR.

Grrr 471 pics over 9 gigs

Using Canon 24-70mm 2.8 and not twist.
======================================
EDIT  just tried second time, same settings but only 19 pics.  Extracted OK.  Going for my third try .... longer ... aiming for 100 pics

josep

DUAL ISO with ETTR works with full-size silent MLV  but see last few post here

http://www.magiclantern.fm/forum/index.php?topic=7139.msg123372;topicseen#msg123372

Today is one of the rare days we have clouds in Sunny Diego, California.  Currently am test shooting full-size silent mlv with ettr time-lapse

I decided not to do the lens twist to test the power of ETTR module.  I hope I made the right decision.  Beside I like to see aperture in EXIF

sorry wrong choice of word.  I meant not consistent.  for time-lapse we wouldn't want some frames have darker gradient at the top ...  flicker

dark, dark, dark, light, dark, light, light  ect...

Common I know few must have downloaded this.  Can someone please share this.  It's a usful  feature

Thanks Alex for the explanation.  Now I understand.

I have decided NOT to use Dual ISO for Full-size Silent because

Shutter speed is erratic (some frame may get darken at the top)
Extra steps in workflow
Keep it simple stupid (KISS) policy

[QUESTION: Why only one got made into DUAL ISO?]

I just tried ETTR and DUAL ISO with Full-size Silent MLV

out of 5 shots only one were made into DUAL ISO (with stripes) and it were process OK with cr2hdr.exe

the stripe were removed and file size went from 37mb to 43mb

Just for experimenting I tried to process the remaining 4 with cr2hdr.exe and nothing were change.

NOTE: I used the new mlv_dump to extract DNGs from the MLV

QUESTION: Why only one got made into DUAL ISO?

Here are EXIF info

1) 1/15 sec   F11.3  ISO 100
2) 1/1000 sec   F11.3  ISO 100   this is the ONLY file  have horizontal stripes (why is that?)
3) 1/1000 sec   F11.3  ISO 100
4) 1/1000 sec   F11.3  ISO 100
5) 1/166 sec   F11.3  ISO 100

I just tried again but this time ETTR and DUAL ISO is activate

Once again the new mlv_dump extracted all 5 DNGs fine

Here are EXIF info

1) 1/15 sec   F11.3  ISO 100
2) 1/1000 sec   F11.3  ISO 100   this is the ONLY file  have horizontal stripes aka dual iso (why is that?)
3) 1/1000 sec   F11.3  ISO 100
4) 1/1000 sec   F11.3  ISO 100
5) 1/166 sec   F11.3  ISO 100

Note: am hand held the camera  so the camera is constant moving, so sometime the camera is closer to the screen or has more bright white blank area in the frame

Hi Josep

I just tried ETTR and Full-res Silent MLV

the new mlv_dump were able to extract the DNGs fine

here are each DNGs EXIF info

1) 1/15sec  f11.3  ISO 400
2) 1/15sec  f11.3  ISO 200
3) 1/15sec  f11.3  ISO 100
4) 1/15sec  f11.3  ISO 100
5) 1/15sec  f11.3  ISO 100
6) 1/15sec  f11.3  ISO 100
7) 1/15sec  f11.3  ISO 100
1/15sec  f11.3  ISO 100
9) 1/15sec  f11.3  ISO 100
10) 1/15sec  f11.3  ISO 100

So I guess ETTR is working.

These are the module loaded at the time of shooting
dual_iso
ettr
mlv_play
mlv_rec
silent

Note: am using the build you made for me.  Which doesn't have dmilligan latest update:
http://www.magiclantern.fm/forum/index.php?topic=12733.50.msg123088#msg123088
update: EXIF shutter speed should now be the time of FA_CreateTestImage (the time you see displayed on the LV screen), not the value set in the Canon menu (which is wrong). This value may be slightly longer than the true exposure time, but it's more correct than Canon menu shutter speed.

If you need I can upload the mlv file for you.  It's 10  shot 376mb
Or if you want  I can try to extract your on my machine

Attero, you should upload the file so the experts can take a better looks

Looks great.  Can I come over and play?