Great problem on interlaced footage

Question

Great problem on interlaced footage

Hi all,

I've just started to shoot 1080/50i footage (AVCHD) with a compact camera (Sony HX20V).

My final target is bluray.

I've transcoded with Compressor the original .MTS to Apple ProRes 422 LT.

Edited (in FCP 7.0.3) with some basic cuts and cross dissolve a bunch of test clips transcoded as above.

Produced the bluray with the "share" function.

The result, seen on a 42" plasma TV is awful: a lot of terrible combing and artifacts on any moving object/subject.

My "fixing" strategy will be:

- "sanitize" the system, erasing Perian and the Panasonic AVCHD importer

- verify the Compressor settings for ProRes 422 LT: here i need for your help !!!

- give a try to ClipWrap to transcode .mts->Prores

Any other idea?

Thanks a lot in advance

iMac 3.06Ghz 8GB 512vRam 1TB + 1TB ext, Mac OS X (10.6.5), iMac "early 2009" model

Posted on Jun 27, 2012 6:24 AM

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Answer 1

hyphen

Level 6

15,499 points

Jun 27, 2012 6:31 AM in response to leoluca lolli

Finalise your edit with all the trimmings (disolves, effects, etc) Do all renders required and export video with the current settings option. Convert to H264 or whatever format you use for blue ray at full quality within Compressor and make syre that size is the same as source video (i pressume 1920X1080 50i). Alternatively you can import the FCP output video to your authoring software and take it from there.

Btw, what do you use to author your BR disc?

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Answer 2

Jun 27, 2012 6:45 AM in response to hyphen

For this try i've used the "share" function within FCP (obviously choosing Bluray from the dropdown menu) that produces a very basic menu in a ready to burn bluray structure (BDMV and CERTIFICATE folders).

I've just discovered that is the Compressor transcoded footage (ProRes 422 LT) that has the problem.

At the following link a stop frame that obviously emphasize the problem but that gives the idea

https://lh4.googleusercontent.com/-cYvODnsUEHE/T-rAbwUCSDI/AAAAAAAAAMk/wLVy5sJIM ns/s1596/SEQUEN%257E1.jpg

So i need for a guide for the right setting to put in Compressor to make the transcoding in ProRes.

Thanks again 🙂

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Answer 3

hyphen

Level 6

15,499 points

Jun 27, 2012 6:50 AM in response to leoluca lolli

Lets take it from the top. If your source fottage looks like the picture you posted that the settings were off by much. If you can tell me the size of your source video then I can post some screen shots

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Answer 4

Jun 27, 2012 7:21 AM in response to hyphen

Thanks hyphen: it is 1920x1080 50i

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Answer 5

hyphen

Level 6

15,499 points

Jun 27, 2012 8:35 AM in response to leoluca lolli

Ok here it is regardless of whatever Prores flavor you use:

1) These are the video/sound settings: Leave as is

2. Frame controls. They should be off so that they take their cues from the source files.

3. Video adjustments leave untouched/ with all buttons unchecked

4. The size tab. Make sure that it is set to a 100% of source

5. Target tab. Leave as is

Check your original settings before you set out converting your source material from scratch. If those match the ones above then it is most likely that the problem lies in your sequence settings in fcp. The sequence settings should be something like this:

Please keep us posted.

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Answer 6

Jun 27, 2012 9:16 AM in response to leoluca lolli

Is there any reason why you didn't use log and transfer to import and convert your MTS files?

I think the AVCHD importer is good for viewing your MTS files but could be unreliable using it for anything else.

DM

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Answer 7

Jun 27, 2012 10:03 AM in response to hyphen

@ hyphen

All settings are exactly the same that you indicated also the sequence setting in FCP are identical

@ David

I'm not sure if i catched your advice: you suggest to use or NOT use Log and Transfer ?

Thanks

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Answer 8

hyphen

Level 6

15,499 points

Jun 27, 2012 10:09 AM in response to leoluca lolli

Could you please check the clip format? Right click or control click on any of your clips on the bin (top left) and select "format" can you please posts the clip information

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Answer 9

Jun 27, 2012 11:13 AM in response to hyphen

Here

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Answer 10

hyphen

Level 6

15,499 points

Jun 27, 2012 11:21 AM in response to leoluca lolli

Is the field dominance in both your sequence and clip format set to upper? Additionally when you play your prores clips in quick time (and not within FCP) how do they look?

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Answer 11

Jun 27, 2012 1:40 PM in response to David Mclaine

I meant Use log and transfer if you can.

DM

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Answer 12

Jun 28, 2012 1:32 AM in response to David Mclaine

hyphen wrote:

Is the field dominance in both your sequence and clip format set to upper? Additionally when you play your prores clips in quick time (and not within FCP) how do they look?

Yes is the same, and the problem is present also playing the clip with QT.

David Mclaine wrote:

I meant Use log and transfer if you can.

DM

Made a test with log and transfer but the problem is still there.

I've made also a "final" verification.

A friend of mine did a ProRes 422 LT conversion on the SAME .MTS clip produced by my camera:

the problem was NOT present also watching the clip on my system.

Then it is my HW/SW setup that have a bug.

I paste here below what i think are relevant infos about my system (it is in italian but i think is pretty clear).

I kindly ask you if you see something "suspect" or if you need some other info.

Thanks again to all.

Riepilogo hardware:

Nome modello: iMac

Identificatore modello: iMac9,1

Nome processore: Intel Core 2 Duo

Velocità processore: 3,06 GHz

Numero di processori: 1

Numero totale di nuclei: 2

Cache L2: 6 MB

Memoria: 8 GB

Velocità bus: 1,07 GHz

Versione Boot ROM: IM91.008D.B08

Version SMC (sistema): 1.37f3

Software:

Dati software di sistema:

Versione sistema: Mac OS X 10.6.5 (10H574)

Versione kernel: Darwin 10.5.0

Volume d'avvio: Mac OS X

Modalità di avvio: Normale

QuickTime Player:

Versione: 10.0

Ultima modifica: 11/11/10 18.19

Tipo: Intel

64 bit (Intel): Sì

Posizione: /Applications/QuickTime Player.app

Compressor:

Versione: 3.5.3

Ultima modifica: 06/06/12 18.01

Tipo: Universale

64 bit (Intel): No

Posizione: /Applications/Compressor.app

Final Cut Pro:

Versione: 7.0.3

Ultima modifica: 06/06/12 18.01

Tipo: Universale

64 bit (Intel): No

Posizione: /Applications/Final Cut Pro.app

QuickTime Player 7:

Versione: 7.6.6

Ultima modifica: 02/03/11 17.58

Tipo: Intel

64 bit (Intel): No

Posizione: /Applications/Utilities/QuickTime Player 7.app

Cinema Tools:

Versione: 4.5.1

Ultima modifica: 06/06/12 18.01

Tipo: Universale

64 bit (Intel): No

Posizione: /Applications/Cinema Tools.app

Motion:

Versione: 4.0.3

Ultima modifica: 06/06/12 18.01

Tipo: Universale

64 bit (Intel): No

Posizione: /Applications/Motion.app

DVD Studio Pro:

Versione: 4.2.2

Ultima modifica: 06/06/12 17.47

Tipo: Universale

64 bit (Intel): No

Posizione: /Applications/DVD Studio Pro.app

Apple Qmaster:

Versione: 3.5.3

Ultima modifica: 06/06/12 18.01

Tipo: Universale

64 bit (Intel): No

Posizione: /Applications/Apple Qmaster.app

Color:

Versione: 1.5.3

Ultima modifica: 06/06/12 18.01

Tipo: Universale

64 bit (Intel): No

Posizione: /Applications/Color.app

iDVD:

Versione: 7.1

Ultima modifica: 06/06/12 17.47

Tipo: Intel

64 bit (Intel): No

Posizione: /Applications/iDVD.app

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Answer 13

Jun 28, 2012 1:48 AM in response to leoluca lolli

What did your friend use to convert the clip ?

DM

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Answer 14

Jun 28, 2012 1:57 AM in response to David Mclaine

David Mclaine wrote:

What did your friend use to convert the clip ?

DM

MacBook Pro 17" Unibody (early 2009), with osx 10.6.8 and the same FCS and QT versions.

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Answer 15

Jun 28, 2012 1:58 AM in response to leoluca lolli

I meant what Software did he use?

DM

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