Canon H1 interlacing at DVinfo.net

Scott Holgate · October 29th, 2007, 05:16 PM

Hello Canon family,

I was hoping you could answer a few questions I have regarding the Canon H1. I have had the H1 for about a year now and edit on the Matrox RT.X2. I shoot 50i and but have noticed some interlacing problems. I do not use the lens image stabilizer and shoot with a shutter 50 -100 usually with the aperture wide open or as close to. The movement is not great - I shoot a lot of hand held and the interlacing is at times really distracting.

What advise do you have to aid the interlacing effect? – I’m sure the
interlacing happens in camera and not in the NLE matrox.

Also I have read much about the down convert methods used by dv info net
users – I have recently been experimenting with Virtual dub and TMPGEnc to
encode my SD DVD’s. What do you think of this method and what other
options would you recommend?

Thanks for you time..

Regards, Scott.

Peter Jefferson · October 29th, 2007, 11:24 PM

The Rt2 is a decent system for HDV, however the issue you're seeing is predominately a slower shutter within temporal frames. Couple that with the HDV codec and more than likely you're pushing the camera to its limits in regard to motion + weak codec = artefacts.

Turn on OIS.

I honestly don't know why you wouldn't turn this on when shooting handheld in any case

As for the Rt2, it does a good downconvert in realtime, I don't know why you wouldn't take advantage of the HW benefits available to you.

Scott Holgate · October 30th, 2007, 04:12 PM

Thanks for the reply Peter, At the risk of sounding stupid – what do you mean by HW?

Peter Jefferson · October 30th, 2007, 06:04 PM

HW = Hardware

The Rt2 is a realtime Hardware encoder/decoder, in turn, you do not require any additional processing power to get good performance or for encoding.

Bear in mind that with Premiere, you are still required to pre-render certain sections for realtime preview which may not be supported by the Matrox card (such as combo filter configs using the Prem GPU/CPU filters), but this should only be on rare occasions.

October 29th, 2007, 05:16 PM	#1
Scott Holgate New Boot Join Date: Oct 2007 Location: Australia Posts: 10	Canon H1 interlacing Hello Canon family, I was hoping you could answer a few questions I have regarding the Canon H1. I have had the H1 for about a year now and edit on the Matrox RT.X2. I shoot 50i and but have noticed some interlacing problems. I do not use the lens image stabilizer and shoot with a shutter 50 -100 usually with the aperture wide open or as close to. The movement is not great - I shoot a lot of hand held and the interlacing is at times really distracting. What advise do you have to aid the interlacing effect? – I’m sure the interlacing happens in camera and not in the NLE matrox. Also I have read much about the down convert methods used by dv info net users – I have recently been experimenting with Virtual dub and TMPGEnc to encode my SD DVD’s. What do you think of this method and what other options would you recommend? Thanks for you time.. Regards, Scott.

October 29th, 2007, 11:24 PM	#2
Peter Jefferson Inner Circle Join Date: Apr 2003 Location: Aus Posts: 3,884	The Rt2 is a decent system for HDV, however the issue you're seeing is predominately a slower shutter within temporal frames. Couple that with the HDV codec and more than likely you're pushing the camera to its limits in regard to motion + weak codec = artefacts. Turn on OIS. I honestly don't know why you wouldn't turn this on when shooting handheld in any case As for the Rt2, it does a good downconvert in realtime, I don't know why you wouldn't take advantage of the HW benefits available to you.

October 30th, 2007, 04:12 PM	#3
Scott Holgate New Boot Join Date: Oct 2007 Location: Australia Posts: 10	Thanks for the reply Peter, At the risk of sounding stupid – what do you mean by HW?

October 30th, 2007, 06:04 PM	#4
Peter Jefferson Inner Circle Join Date: Apr 2003 Location: Aus Posts: 3,884	HW = Hardware The Rt2 is a realtime Hardware encoder/decoder, in turn, you do not require any additional processing power to get good performance or for encoding. Bear in mind that with Premiere, you are still required to pre-render certain sections for realtime preview which may not be supported by the Matrox card (such as combo filter configs using the Prem GPU/CPU filters), but this should only be on rare occasions.