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Timecode in DNxHD and Cineform
Hello,
does anybody know why cineform can use timecode from the file (without all the AVCHD and EOS 60D MOV SD card structure) but DNxHD needs to convert files from the sd card structure? In addition i get wrong timecode in DNxHD.
I would like to switch to DNxHD but the above mentioned timecode problem stops me very much.
I’d aprecciate any clues about this.
Greatings,
Marcin -
6 Replies
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I assume you are using the GoPro CineForm Studio to convert to CineForm?
…how are you converting to DNxHD?
TimK,
Director, Consultant
Kolb Productions,Adobe Certified Instructor
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I use old cineform before it was bought by GoPro. I try to convert to DNxHD with Adobe Prelude.
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So really the question probably is why CineForm’s converter will read the extracted files and why Prelude won’t…and why Prelude ends up messing with the TC.
If the CineForm codec is on your machine, you can probably choose it as a destination from Prelude and do a test to see if the TC is messed up in that file…or test any other codec as an output from Prelude…
I have my doubts that the problem is in the codecs…it’s more likely in the difference in conversion method.
TimK,
Director, Consultant
Kolb Productions,Adobe Certified Instructor
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Ok, thank you very much that you try to help me. I’ve checked what you wrote and behaviour using prelude with cineform codec is the same as with DNxHD so it seems that problem is at the prelude side. Next question is what is that problem. Do you use Prelude to transode your files? Does it deal with timecode right?
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I don’t use Prelude because using Premiere Pro to edit means I can just cut the footage natively…
What exactly is the problem? Does the TC reset to 00:00:00 at the head of each clip? Is it a drop-frame/non-drop-frame issue?
TimK,
Director, Consultant
Kolb Productions,Adobe Certified Instructor
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Thanks again, I really apreciate your time spending about my problem. Problem depends on media I transcode. With Canon EOS 60D MOV files TC at the head of footage is 0:00:00 and with the AVCHD (SONY HXR-NX5) TC is not correct. In one clip it should start with TC 16:28:20:00 (it is set to base on the time of taking footage in my camera – GMT+1 – POLAND) (and it starts like that when I convert with Cineform converter instead of Prelude). But when I convert (either cineform or DNxHD codec) with prelude TC starts with 8:08:42:03. First i thought it is TimeZone problem but it seems not because ofset is not just hours but also minutes and seconds. The above takes place when I use all AVCHD file structure right from my SD card. When I use only AVCHD movie files (.mt2s/.mts) that are copied to my hard drive without all the AVCHD file structure TC also starts with )0:00:00:00 like MOV files form canon eos.
And those are non-drop frame footages. AVCHDs are 1080i50 and MOVs are 1080p25
Any ideas?
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