Bill Ravens
August 5th, 2007, 12:45 PM
I've made some JVC HD110 firmware upgrades simultaneously with updating Cineform NeoHDV to version 3.0.5. I'm seeing some changes to the reported frame-rates of m2t files and framerates of converted CFHD intermediate files. I'd like a confirmation of what I'm seeing from David Newman.
Here's a summary of what's happening:
Before the updates:
m2t files recorded in 24p would automatically be converted to 24p CFHD files, WITHOUT checking the "Remove 3-2 pulldown" button in HDLink preferences.
After the updates:
Now, m2t files recorded in 24p are converted to 60p CFHD Intermediate files if the default preferences are used.
If I want to maintain the 24fps frame-rate, I MUST check the "Remove 3-2 pulldown" button.
Vegas reports the native m2t files as 24p and the converted CFHD Intermediate files as 60 fps, however, other playback devices report the native m2t files as 60fps even if they were recorded as 24p.
There is no change to the way 60p or 30p files work. They convert properly with all the default preferences settings.
Has HDLink changed the way it handles 24p files from the HD110?
Conversely, perhaps the HD110 is flagging the file header differently with the Firmware update?
This may sound very confusing. The bottom line question is this:
Do I need to check the "Remove 3-2 pulldown" button in HDLink preferences, when generating 24p CFHD Intermediate files? I never had to do this before.
David, can you answer this?
Thanx
P.S. Just for general info, JVC issued a firmware update to correct a problem with 24p files conversion in FCP. The thread related to the firmware update is here:
http://www.dvinfo.net/conf/showthread.php?t=100245
and
http://pro.jvc.com/pro/attributes/HDTV/soft/100110_upgrade/
Here's a summary of what's happening:
Before the updates:
m2t files recorded in 24p would automatically be converted to 24p CFHD files, WITHOUT checking the "Remove 3-2 pulldown" button in HDLink preferences.
After the updates:
Now, m2t files recorded in 24p are converted to 60p CFHD Intermediate files if the default preferences are used.
If I want to maintain the 24fps frame-rate, I MUST check the "Remove 3-2 pulldown" button.
Vegas reports the native m2t files as 24p and the converted CFHD Intermediate files as 60 fps, however, other playback devices report the native m2t files as 60fps even if they were recorded as 24p.
There is no change to the way 60p or 30p files work. They convert properly with all the default preferences settings.
Has HDLink changed the way it handles 24p files from the HD110?
Conversely, perhaps the HD110 is flagging the file header differently with the Firmware update?
This may sound very confusing. The bottom line question is this:
Do I need to check the "Remove 3-2 pulldown" button in HDLink preferences, when generating 24p CFHD Intermediate files? I never had to do this before.
David, can you answer this?
Thanx
P.S. Just for general info, JVC issued a firmware update to correct a problem with 24p files conversion in FCP. The thread related to the firmware update is here:
http://www.dvinfo.net/conf/showthread.php?t=100245
and
http://pro.jvc.com/pro/attributes/HDTV/soft/100110_upgrade/