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Topics - benoitvm

#1
Duplicate Questions / DOF info on overlay
October 08, 2013, 04:00:54 PM
re: http://www.magiclantern.fm/forum/index.php?topic=1838.msg6135#msg6135

Is the possibility to have the DOF info as an optional element on the overlay screen considered for a next version ?
Even if not 100% accurate....
#2
Made some holiday video with my new EOS 600D (T3i) and ML. Using Class6 SDHC cards, as recommended by Canon. Default bitrate.
On some occasions, I had the "five-level indicator" appearing shortly before the recording automatically stopped. I understand this might be due to the fact I was shooting "difficult" scenes (pan across "busy" landscape with lots of details, leaves, etc..), and the instant bitrate (default is VBR recording on this camera) was probably peaking too high....

But the real problem is that in some other clips, without apparent reason, and without any notice during recording, I have occasional "frozen frames", i.e. 4 identical frames (meaning 3 lost frames). There is no interruption in the sound, and the sequence of the individual frames suggests that there was no interruption in the video recording either, just short bursts of "frozen frames" (each time 4 identical frames). Any clue what this could be ? A bug in the AVCHD encoding (Canon...), a problem with the unit, or a side effect of ML (eating up some valuable CPU cycles...) ? Needless to say, it is quite annoying: it is impossible to detect before carefully watching all clips after shooting, and the cure, if reshooting isn't possible, is to try some frame interpolation technique in the editing phase....

Note: the Class 6 SDHC card used works fine with Canon HF-G10 AVCHD Camcorder at highest bitrate (24 Mbps), and is even recognized as being class 10 by the camcorder.