MJPEG card read errors

Uncle GroOve

Active member
This probably been asked already, but a search for "read error" causes some kind of fatal error in the forum search function.. hmmm .... :-/

I've implemented the Andrew Reid / EOSHD MJPEG patch* for and I'm getting card read errors (both on class 10 and class 6 cards).
This means that apparently the camera is filming correctly but when I can't preview the film in-camera AND the .mov file cannot be read from an external program such as Handbrake, VLC, Quicktime, which is to say the least very frustrating.

I am also baffled by the logic of this error. Other users report recording problems on tripod shots - yet the following tripod test (ISO 320, 24mm 2.8 manual lens closed down to 5.6) shooting detailed foliage worked perfectly 4 times in a row...
http://www.jjm.ch/motion/P1000963.MOV

Other handheld test shots of trees or equally detailed objects result in the infamous "read error".
It's a ***** - 'cause you don't know until you do a in-cam preview of the shot if it has worked or not (the card crash error instead is immediately evident)...

At the end of the day I think I'll stick w/ AVCHD as it seems more stable - I still haven't experienced any crashes or read errors with the "C" setting (as per Ptool's indications).

Oh BTW - is there really no way to save/play the broken .mov recordings....?

Thx

Paul

*EOSHD 50Mbit 1080p MJPEG (30p)
•
• MJPEG E1 Quality = 400
• MJPEG E1 Table = 103
• MJPEG E2 Quality = 350
• MJPEG E2 Table = 116
• MJPEG E3 Quality = 250
• MJPEG E3 Table = 120
• MJPEG E4 Quality = 200
• MJPEG E4 Table = 125
 
35Mbps 4:2:2 color MJPEG patch with in-camera playback:
http://dvxuser.com/V6/showpost.php?p=2039780&postcount=5

Yup in the past I had used those - excellent work BTW!
I'm not trying to get in to some sort of competitive comparison of who did the best patch, I'm just trying to understand a) how to save (if possible) the corrupt files and b) try to understand under what conditions the error takes place, since I am hearing conflicting reports (i.e. tripod vs. handheld), and since this error will only be apparent once it's too late..

Thx

Paul
 
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