Replies – Forums – Cedric Divang – Page 2

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Cedric Divang
May 29, 2014 at 8:46 am in reply to: Sony MXF or XDCAM EX : What’s the best intermediate format for HandBrake ?

Thank you ! 🙂
Cedric Divang
May 9, 2014 at 9:14 pm in reply to: Is there a Decomb plugin for Vegas ? (De-Interlacer)

Thank you Steve. I guess I’ll keep using Vegas for editing and Handbrake for encoding.
Cedric Divang
May 9, 2014 at 5:50 am in reply to: Worse video quality with GPU acceleration than without ? (MainConcept Codec)

nvm i’ve found the answer on the web, the .sfl can be safely deleted
Cedric Divang
May 8, 2014 at 6:14 pm in reply to: Worse video quality with GPU acceleration than without ? (MainConcept Codec)

Hi again norman, I’ve followed your advice and am now exporting the project to .MXF (blazing fast because it doesn’t need recompression !!!) before passing it to handbrake. I have a little question : A .sfl file is created by SVP along with the .mxf file. What is the .sfl ? Can I safely delete it ? Is there a way to prevent SVP from creating this file ? Thanks for your help 🙂

BTW you were right, the x264 render is better than MainConcept (which still gets very good results for me) and looks somewhat faster with the settings I use. I hope the x264 developers find a way to implement GPU acceleration (apparently it’s just used for cropping or scaling down for now) because their codec is awesome and the devs look talented 😀
Cedric Divang
May 7, 2014 at 5:33 pm in reply to: Worse video quality with GPU acceleration than without ? (MainConcept Codec)

Thanks for this very long and interesting post Dave. It was a pleasure to read !

Handbrake seems to be the software most people use to encode in x264. I tried it and it looked pretty complicated (too many parameters to set), not to mention that I’d have to render in Vegas before passing the video to Handbrake. Too much work 😉 I’ll stick with MainConcept for now.

Yes I have GPU enabled in Vegas and disabled on MainConcept 🙂
Cedric Divang
May 7, 2014 at 10:15 am in reply to: Worse video quality with GPU acceleration than without ? (MainConcept Codec)

Oh noooo 🙁 Thank you very much for your reply Norman. Now I understand why they ask us to choose with of without GPU acceleration in the MainConcept Render Properties :-/ The quality difference is huge !

You said that x264 is the best codec for max quality at low bitrates, but I far as I know, it’s not available in Sony Vegas because of the GPL restrictions. That’s why I use MainConcept which gives me amazing results on Variable Bit Rate mode.

Let’s hope that MainConcept updates his GPU algortyhm but apparently it hasn’t been touched for years since the latest compatible Video card is the ATI Radeon 6970 that came out in … 2011 ! ( See the “Tech Specs” tab here : https://www.mainconcept.com/eu/products/sdks/gpu-acceleration/opencltm-h264avc.html ).

After your message, I did some research and have found that GPU acceleration is actually “incredibly difficult” for video encoding because video encoding is a linear process while GPU relies on parallel processing. A guy from the x264 project says that the only way of making it non linear is by using different algorythms and make significant sacrifies 🙁

Look at this very interesting video : https://www.youtube.com/watch?v=uOOOTqqI18A
Cedric Divang
April 27, 2014 at 9:06 pm in reply to: SVP 13 and GPU cards, need your experiences

I have an AMD HD7750 Series and rendering takes exactly the same time as SVP12.
Cedric Divang
January 16, 2014 at 8:02 am in reply to: Sony Vegas Pro 12.770 freezes when I import a previously rendered .mp4 file

Great findings and thank you so much for trying to spot the problem !

I’ll report this to Sony.
Cedric Divang
January 16, 2014 at 7:39 am in reply to: Sony Vegas Pro 12.770 freezes when I import a previously rendered .mp4 file

Sony MP4 doesn’t support variable bitrate, that’s why I use MainConcept.
Cedric Divang
January 16, 2014 at 3:18 am in reply to: Sony Vegas Pro 12.770 freezes when I import a previously rendered .mp4 file

haha steve you’re a god-send, now i know that i must downgrade to solve this problem that’s been puzzling me for weeks 😉

I will send my findings to Sony !

EDIT : Is it possible to install 2 different versions of SVP on the same computer ?

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