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Tenative conclusion: Smart Resample causes ghosting when using 59.94 fps source footage and rendering to 29.97
Hi;
I’ve been shooting more with my Panasonic GH3 using the h.264 codec at 50 Mbps and 59.94 progressive. Really loving my new glass – LUMIX G X VARIO 35-100mm / F2.8. Everything is perfectly in focus from edge to edge, and chromatic aberration is lower than anything I have tested in the last three years. (Hoping they will release a 100-200 version – I’d buy one in a heartbeat even if it meant getting yet another loan)
I got some OK footage of a helicopter ferrying repair crews to and from the FAA towers on the mountain behind my house. I must preface this post by stating that the footage looks amazing piped directly from my Panny into the Samsung TV – not a bit of stutter. Computers have a hard time dealing with the 50 Mbps output.
I dropped the footage into SVP12 and let it “adjust the project” to match the source when it offered. The video was rendered with the MainConcept AVC encoder.
Most of the event segments have the default Smart Re-sample on. However, for the events I wanted to slow-mo (down to about 0.33 ), I noticed pretty bad ghosting on the chopper blades and other moving elements – so bad, that it would leave little blemish-like sections of object on the frames. So, for those slo-mo segments, I disabled re-sample.
After the entire video was rendered, I also noticed the ghosting on the non slo-mo segments. I’m speculating that because the source is double frame rate, Vegas in Smart Re-sample mode is not just throwing away the frames, it is trying to do some kind of blending or interpolation.
At bottom of this post is link to the video. I can shoot the chopper any day I get up there in time, so over the next few weeks I will have lots of angles. The pilot is pretty casual about sweeping in for the landing turn! It only takes him about 1 min to fly down from the tower and land each day.
https://www.youtube.com/watch?v=vUypZZLcgW0
Steve
Win7 Pro X64 on Dell T7500, MultiTB SATA, 12GB RAM, nVidia Quadro 2000, Vegas 12, 11, 10, 9 DVDA 6.0 & 5.2(build 135) Sony HDR-CX550V, Panasonic GH3 with LUMIX G X VARIO 12-35mm / F2.8 ASPH, LUMIX G X VARIO 35-100mm / F2.8
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12 Replies
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Yeah, its long established that Vegas’s resampling
cases ghosting, That’s why i always recommend disabling resample
on every event before a render.
I simply have a script that disables resampling on every event
on the timeline just before i do any rendering.Steve Rhoden
(Cow Leader)
Film Editor & Compositor.
Filmex Creative Media.
https://www.facebook.com/FilmexCreativeMedia
1-876-461-9019 -
Always disable resample when changing playback speed.
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I guess smart resample is not so “smart”. Seems obvious that a “smart” resampler should have the smarts to know that it can just throw away every other frame when going from 2x to 1x frame rate. In this case 59.94 to 29.97.
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Oooh – Steve, is that script available? I’m tired of doing it event by event.
Steve
Win7 Pro X64 on Dell T7500, MultiTB SATA, 12GB RAM, nVidia Quadro 2000, Vegas 12, 11, 10, 9 DVDA 6.0 & 5.2(build 135) Sony HDR-CX550V, Panasonic GH3 with LUMIX G X VARIO 12-35mm / F2.8 ASPH, LUMIX G X VARIO 35-100mm / F2.8
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[Stephen Crye] ” I’m tired of doing it event by event.”
You can easily set it for all events on a track.
Select the first event on track.
Right click and choose select events to end.
Right click and choose disable resample.You cannot use Ctrl+A (select all) because audio events and tracks do not have the same right click options menu.
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You can get the script here Stephen…Create an icon for it on your toolbar
and simply press once to Disable Resampling on every event.
https://www.mediafire.com/download/jy34bsx4flyzb42/Smart+rerender+Disable.csSteve Rhoden
(Cow Leader)
Film Editor & Compositor.
Filmex Creative Media.
https://www.facebook.com/FilmexCreativeMedia
1-876-461-9019 -
Hi Sir……(Mr.Norman Black)
Thank you sir,its help too
System Details:
Custom Built
Motherboard – Asus M5A99X-EVO,HardDrive1 boot C:SSD Kingston,Processor – Amd FX 8350 4.0/4.2 GHZ,Ram – 16 GB,Graphic Card – Asus Gtx 650 1GB DDR 5,Blu Ray Writer – Plextor PX-B950SA,Operating System – Window 7 Pro 64 Bit and Editing Programe – Sony Vegas Pro 12 -
Thank You Mr.Steve for the link but how to install the plugin.Pls guide me.
Thank You
System Details:
Custom Built
Motherboard – Asus M5A99X-EVO,HardDrive1 boot C:SSD Kingston,Processor – Amd FX 8350 4.0/4.2 GHZ,Ram – 16 GB,Graphic Card – Asus Gtx 650 1GB DDR 5,Blu Ray Writer – Plextor PX-B950SA,Operating System – Window 7 Pro 64 Bit and Editing Programe – Sony Vegas Pro 12 -
Muchas Gracias to both Norman and Steve R!
Steve
Win7 Pro X64 on Dell T7500, MultiTB SATA, 12GB RAM, nVidia Quadro 2000, Vegas 12, 11, 10, 9 DVDA 6.0 & 5.2(build 135) Sony HDR-CX550V, Panasonic GH3 with LUMIX G X VARIO 12-35mm / F2.8 ASPH, LUMIX G X VARIO 35-100mm / F2.8
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Glad to help Gentlemen!
Steve Rhoden
(Cow Leader)
Film Editor & Compositor.
Filmex Creative Media.
https://www.facebook.com/FilmexCreativeMedia
1-876-461-9019
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