Encore and AVCHD discs

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kch
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Joined: Mar 14 2004

I have a Panasonic Blu Ray player that plays AVCHD discs and as I produce many 10 minute videos, mainly of my daughter and her horse riding, I thought that AVCHD on standard DVD would be the cheapest way to view full HD. Encore CS4 does not support AVCHD discs but after buying the CS4 suite I was reluctant to buy any more software. I have come up with a workflow that produces a good quality result and thought that others out there might find it useful.
I am starting with 1080i video. AVCHD.
Edit in P.Pro. Dynamic link to Encore. Create menu. Write to Blu ray folder.
Load the BDMV folder into multiAVCHD and let it do its stuff - Do not include the Certificate folder. This is very technical stuff, something of a mystery to me.
Burn to dvd with ImgBurn.

Simple menus created in Encore work fine, have not tried complicated ones.
Only seems to work when I let Encore do the encoding. P.Pro. and Media encoder must need tweaking somewhere.

multiAVCHD is free (optional donation) from multiavchd.deanbug.com

Although a Blu Ray player is needed to view the discs a standard dvd burner is all that is needed to burn them.

I am sure that you will be able to improve on this as I am a complete amateur and I may be telling you what you already know. I look forward to your comments.

Ken

kch
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Joined: Mar 14 2004

After a few more trials and coasters I have changed my settings to export from P.Pro with the H.264 Blu ray preset with the bitrate setting changed to 18Mbps. (standard AVCHD disc bitrate)

Import into Encore, build menu and then out to a Blu ray folder as before.
The quality of these discs is not Blu ray but is far far better than sd.
I can also use Taiyo Yuden Watershield discs which look good and are a fraction of the price of quality Blu ray discs.

This might be of use to someone out there.

Ken

Claire
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Joined: Apr 28 2001

Hi Ken,

Just curious, why do you think the quality of your discs made in this manner are not Blu ray?

The reason I ask is because I encode for my Blu-ray discs with H.264 at around 18 - 20 Mbs and they always look every bit as as good as the original footage from my EX1R which is recording 35Mbs MPEG2. Maybe it's cos I am using VBR...

or is Encore doing a second compression?

Claire

Richard Payne
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Joined: Sep 15 2000

Just an asside to this, EDIUS 6 will write an AVCHD image back to SD card, so it will playback in cameras, Blu-ray players and screens with SD Card video playback.
Also the Blu-ray encoding data rates have been doubled to 40 MBS.

kch
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Joined: Mar 14 2004

Hi Claire,

My original footage is from a Sony HXR-NX5 and looks stunning on a 42" Panasonic plasma.
My AVCHD discs are not quite up to the original footage - but not far short. I have not yet treated myself to a Blu ray burner so I am not sure what home produced Blu ray will look like - I assumed that Blu ray with a higher than 18Mbps would automatically look better, perhaps I am wrong?
I have not yet played about with VBR settings - maybe something to do over this wet weekend.
There does not seem to be anything further going on in Encore as far as I can see.

The other thing I haven't figured out yet is the max length of video that will fit.

The combination of multiAVCHD and ImgBurn works a treat - the two can be linked and the whole process is fairly automatic.

Ken

Claire
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Joined: Apr 28 2001

Ken, I am still not clear on what you are doing, I looked up multiAVCHD and it seems to be an encoder, so are you saying you are now encoding to h.264 with Encore then having multiAVCHD repeat this encode a 2nd time? This would certainly cause a drop in quality.

Forgive me if I have got this wrong.

Richard, I am using Firecoder Blu hardware with Edius 5.51, will Edius 6 allow FCB to exceed it's present limit of 20-22Mbs h.264/avc or is this new higher limit confined to MPEG 2 using Edius's software encoder? Thanks!

Claire

Richard Payne
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Joined: Sep 15 2000
Claire wrote:
Richard, I am using Firecoder Blu hardware with Edius 5.51, will Edius 6 allow FCB to exceed it's present limit of 20-22Mbs h.264/avc or is this new higher limit confined to MPEG 2 using Edius's software encoder? Thanks!

Not sure yet, as I don't have the FCB drivers, I am hoping so, I let you know asap.

kch
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Joined: Mar 14 2004

Hi Claire,
To be honest I'm not too sure what I'm doing either.

I am exporting from p pro as an h.264 file, 18Mbps. Then into Encore for authoring. Output from encore to a Blu ray folder.

As I understand it, multiAVCHD changes the structure of the Blu ray files to suit the AVCHD disc structure which I think is slightly different to Blu ray. This happens very quickly so I don't think any compression/encoding is taking place. ImgBurn than automatically starts up to burn the disc.

I could not find any way of burning an AVCHD disc direct from Encore but perhaps someone knows better?

Does this make any sense?

Ken
ps. After wading about in google results it would appear that it may be possible to fit about 30 minutes on a disc at 18Mbps. It would also appear that no re encoding takes place.