Sony 1080i30 to 720p60 at DVinfo.net

Graham Hickling · March 23rd, 2006, 08:29 PM

Graeme Natress commented in a recent thread that one advantage of the Sony cameras vs. the JVCs is that one can easily do a full-frame deinterlace to 720p60. I just gave that a try via Avisynth and a deinterlacer I hadn't used before, Kurt Prunner's LeakKernelDeint (available here: http://gast3.ssw.uni-linz.ac.at/~kp/AviSynth/).

With simply the default settings, the results are really rather impressive - both for computer playback and as a WindowsMedia9 file played on my Linkplayer2. (The kernal deinterlace seems to provide some subtle denoising and sharpening.) For those interested, here's a basic avs script:

Avisource("Cineform1080i30.avi")
LeakKernelBob(order=1)
lanczosresize(1280, 720)

Just as an aside, am I correct in understanding there is no valid MPEG2 encoding option for p60 footage? - i.e. that the MPEG2 spec maxes out at p30?

David Heath · March 24th, 2006, 03:56 AM

Quote:

Originally Posted by Graham Hickling

Just as an aside, am I correct in understanding there is no valid MPEG2 encoding option for p60 footage? - i.e. that the MPEG2 spec maxes out at p30?

That doesn't sound right - surely some broadcasters use MPEG2 to broadcast 720p/60?

Robert M Wright · March 24th, 2006, 08:07 AM

You can encode 720/60p video with MPEG-2.

Graham Hickling · March 24th, 2006, 10:55 AM

Well I thought so too too...but then none of the encoders I have (Procoder, Adobe Media Encoder, TMPG Xpress) seemed to accept 60p as a legal request. And then I found several webpages saying 60p wasn't "legal" at all!

Could someone tell me which software encoders support 720p60 - maybe I am just setting up my profiles incorrectly?

Graham Hickling · March 26th, 2006, 11:47 AM

OK I'll answer my own question: Adobe Media Encoder in PPro2 will do 720p60 encoding (I somehow missed this the first time I looked).

Procoder, Procoder Express and TMPGEnc Xpress do not support it.

CORRECTION : Oops! Procoder and Procoder Express DO support 60P, provided the mpeg profile is manually switched to MP@HL (see below)

Robert M Wright · March 26th, 2006, 12:22 PM

TMPGEnc Plus 2.5 will encode 60p.

Graham Hickling · March 26th, 2006, 09:25 PM

So it does - thanks. I (now) see that it's the Main Profile Main Level spec thats limited to 30P, not MPEG2 itself:

MP@ML (Main Profile Main Level) upper bound:
720 x 576 (PAL) or 720 x 483 (NTSC)
30 Hz progressive, 60 Hz interlaced
Maximum bit rate is 15 Mbits/s

MP@HL (Main Profile High Level) upper bound:
1152 x 1920, 60Hz progressive
80 Mbits/s

March 23rd, 2006, 08:29 PM	#1
Graham Hickling Trustee Join Date: May 2004 Location: Knoxville, Tennessee Posts: 1,669	Sony 1080i30 to 720p60 Graeme Natress commented in a recent thread that one advantage of the Sony cameras vs. the JVCs is that one can easily do a full-frame deinterlace to 720p60. I just gave that a try via Avisynth and a deinterlacer I hadn't used before, Kurt Prunner's LeakKernelDeint (available here: http://gast3.ssw.uni-linz.ac.at/~kp/AviSynth/). With simply the default settings, the results are really rather impressive - both for computer playback and as a WindowsMedia9 file played on my Linkplayer2. (The kernal deinterlace seems to provide some subtle denoising and sharpening.) For those interested, here's a basic avs script: Avisource("Cineform1080i30.avi") LeakKernelBob(order=1) lanczosresize(1280, 720) Just as an aside, am I correct in understanding there is no valid MPEG2 encoding option for p60 footage? - i.e. that the MPEG2 spec maxes out at p30?

March 26th, 2006, 11:47 AM	#5
Graham Hickling Trustee Join Date: May 2004 Location: Knoxville, Tennessee Posts: 1,669	OK I'll answer my own question: Adobe Media Encoder in PPro2 will do 720p60 encoding (I somehow missed this the first time I looked). Procoder, Procoder Express and TMPGEnc Xpress do not support it. CORRECTION : Oops! Procoder and Procoder Express DO support 60P, provided the mpeg profile is manually switched to MP@HL (see below) Last edited by Graham Hickling; March 26th, 2006 at 09:35 PM.

March 24th, 2006, 08:07 AM	#3
Robert M Wright Inner Circle Join Date: Jan 2006 Location: Minnesota (USA) Posts: 2,171	You can encode 720/60p video with MPEG-2.

March 24th, 2006, 10:55 AM	#4
Graham Hickling Trustee Join Date: May 2004 Location: Knoxville, Tennessee Posts: 1,669	Well I thought so too too...but then none of the encoders I have (Procoder, Adobe Media Encoder, TMPG Xpress) seemed to accept 60p as a legal request. And then I found several webpages saying 60p wasn't "legal" at all! Could someone tell me which software encoders support 720p60 - maybe I am just setting up my profiles incorrectly?

March 26th, 2006, 12:22 PM	#6
Robert M Wright Inner Circle Join Date: Jan 2006 Location: Minnesota (USA) Posts: 2,171	TMPGEnc Plus 2.5 will encode 60p.

March 26th, 2006, 09:25 PM	#7
Graham Hickling Trustee Join Date: May 2004 Location: Knoxville, Tennessee Posts: 1,669	So it does - thanks. I (now) see that it's the Main Profile Main Level spec thats limited to 30P, not MPEG2 itself: MP@ML (Main Profile Main Level) upper bound: 720 x 576 (PAL) or 720 x 483 (NTSC) 30 Hz progressive, 60 Hz interlaced Maximum bit rate is 15 Mbits/s MP@HL (Main Profile High Level) upper bound: 1152 x 1920, 60Hz progressive 80 Mbits/s