Tagged with blocky - Personal View Talks

Smoothest hack, intra, macroblocking... Noob questions !

TruHype — Wed, 03 Jul 2013 18:17:07 +0000

Hello,

Attention, noob questions ahead !

I would like to know a few things : - Which is the smoothest hack on the GH2 ? (All the detail, no macro-blocking) - What does "Intra" or "AVC-Intraa" mean ? - What is Auto Quantitizer ? I'm not sure if a higher number means a better image (lower compression) or it's the inverse. What is better, AQ0 (all to motion), or AQ4 (all to details) ? - What does GOP stand for, and there is "Low-GOP", but then does that mean there's "high GOP" ? What are 12/15 GOP, 3 GOP and 6 GOP ? - What are P-frames, B-frames... ? - What is "Matrix" and "444 Matrix" ? - On some settings there's written "14-16 QP", or "QP16". What does QP mean ?

I've not seen much smooth looking GH2 videos on Youtube (unlike the canon videos), lots of them have a lot of macroblocking or whatever and causes the video not to be smooth, and sometimes there are some sort artifacts (I think it's because of the compression or something...). I'm a bit of a pixel-peeper :P Could someone explain me the causes of the un-smoothness, and why are some videos really clean compared to others ?

Example of smooth videos I've found :

(his videos are all smooth and clean)

PS : Can someone give me the link to download the 244mb/s hack ?

And here on EOSHD there's an article about Intra :

http://www.eoshd.com/content/4452/gh2-gets-avchd-intra-at-176mbit

But I still don't understand the difference between the 176mbit so-called "Intra" hack and any other one ! I'm confused...

Please answer !

Thank You.

Macro-blocking on AVCHD but not on MJPEG ?

TruHype — Sat, 01 Jun 2013 13:21:59 +0000

Hi, I've discovered that there was Macro-blocking on AVCHD 24p video (even when transcoded with 5d2RGB), but not with MJPEG ! I was using the 'Apocalypse now Cluster v7 DREWNET 444 Soft Matrix' (MJPEG 2k and changed 30p to 24p with ptools).

How do I get rid of it ?

Blocky DVX100 footage when imported into PPro or AE

sam_stickland — Wed, 25 Apr 2012 14:24:11 +0000

OK, so this is a bit of a blast from the past. I was trying to import some old SD footage from my trusty old DVX100 and in Premiere Pro (CS5 and 5.5) and After Effects (CS5.5) I'm getting nasty blocky artefacts, primarily in the red channel. I don't see these artefacts in VLC though. I've got the footage interpreted correctly (Progressive)... really starting to pull my hair out!

Has anyone got any ideas?!