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HV20 why 1440x1080?

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Brad Mirman
HV20 why 1440x1080?
on Mar 13, 2010 at 1:55:41 am

I am doing a project where I am using a Canon T2i as A cam and HV20 as B Cam. After removing pulldown from the HV20 I am left with 1440z1080 23.98 clip.

I use FCP and My work-flow is to capture HV20 24p footage with DVHSCAP... covert M2T file with MPEGStream to MPEG and ProRes. I import MPEG into Compressor and use Apple ProRes for Progressive material High Quality. Frame control is on and deinterlace is set to Reverse Telecine. When I import into FCP I get a 1440x1080 resolution. Why not the 1920x1080? Or does the HV20 not shoot 1920x1080 in 24p?

I am concerned because my 24p footage from the canon is importing at 1920x1080


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William Busby
Re: HV20 why 1440x1080?
on Mar 13, 2010 at 7:10:13 pm

I'm not a Mac user, so can't help you there. But 1440x1080 is HDV2 spec. The HV20 records in 1920x1080), but is sampled down to 1440*1080 when it records to tape. Then it's sampled up to 1920x1080 when played back. Must be an issue in your capture settings somewhere.


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Brian Louis
Re: HV20 why 1440x1080?
on Mar 14, 2010 at 2:52:13 pm

[William Busby] "Then it's sampled up to 1920x1080"
When its played back from tape and transfered to a computer via firewire or HDMI its still 1440x1080 anamorphic, the only way you can get full 1920/1080 is to use the HV20 as a live camera head and capture via hdmi, or capture component, if you capture live cam via firewire you get 1440x1080


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Robert Dix
Re: HV20 why 1440x1080?
on Mar 18, 2010 at 11:25:40 pm

I have not detected any difference in quality , in fact combining Canon EOS 5D Mark II 1920x1080 p clips in Premiere Pro and Export to Tape looks identical.


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Robert Dix
Re: HV20 why 1440x1080?
on Mar 19, 2010 at 12:28:37 am

Incidentally we have used the Canon Hv 20 for three years for broadcast quality high definition clips, the 5D Mark II mov clips at 1920 x 1080 are great but, there is little between the two.Even Canon says you can use this HV20 as a vtr for clips from their XL H1, XH G1 or XHA 1(both 50i and25 F mode)Quote Canon manual 0067W579 Pub DIE-281 0207N10-3, we Export to Tape only with minor copies dowgraded to DVD but, even that using the Adobe Media Encoder Cineform avi looks more than acceptable.


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