• Blackmagic Design

  I have to stay with SD BetacamSP but want to start HD720p

  Posted by Robert Falkowski on June 10, 2007 at 11:39 am

  Hello from Poland!
  Despite editing video on comps more then 10 years (VideoMachine, SpeedRazor, DS Full, LE MAX, Premiere, AFx…) I fell like a noob entering HD area.
  My old DSLEMAX dying. Analog input does some strange things and I need to change to something dealing with SD and HD. My first shot is BM-D Multibridge Pro. Budget is low and I am very happy to see Pro systems way bellow 10.00USD 🙂 Multibridge Pro looks on paper like a decent tool for me (like I see it can drive both SD and HD words) but I need to know few things:

  1. Can MBPro output native PPro HD JVC 720p25 project (we have JVC camera) downconverted on the fly to 576i SD 16:9lb via component outputs to BetacamSP (PAL system)? What about quality?
  If not possible in native PPro setup for JVC… Any work around for this?

  2. Is it possible to build budget PC system (for ex. based on P965 Intel chipset, Core2 Duo CPU, internal SATAIIx4 raid 0) or it HAVE to be BM-D recommended system? Mind You… I do not wanna full HD this time.

  3. On system above what will I get RT in SD resolution using BM-D mjpeg codec. Now I have 2xvideo, 1 trans, 1 clip FX +2graphic layers RT on my DSLEMax with SpeedRazor. More or less RT I get editing on RTX100 PPro2. Will PPro get more RT with Quadcore CPU on BM-D system?

  So many options… AJA, BM-D, Axio, Avid, Liquid… I do not know where to go :/ but trying to stay with IMHO nice Adobe pack concept.
  Please help me 🙂

  Robert Falkowski
  http://www.mmstudio.com.pl

  Robert Falkowski replied 18 years, 10 months ago 1 Member · 1 Reply
• 1 Reply

• 

  Robert Falkowski

  July 15, 2007 at 6:19 pm

  Hello again!
  Although my previous post was ignored…
  May I ask a little more attention this time? 😉
  I am running test before buy project on MBPro (6.1.2 drv) and I found so far one major problem, actually it is very strange.

  I am trying to edit (just for fun, thank`s God!) few clips taken from JVC 720p25 in HDV form. It seams impossible to watch them on SD PAL monitor (HD to SD downconvert) from BMD 720p50 Premiere project. Jerky playback now and then but downconvertion is very bad (lots of vertical lines, flickers and detail faults). When I use those clips on BMD SD Pal mjpeg project and downsacle them on timeline it plays fine but in fact need to be rendered with deflick option to look good. IMHO the better result I get using the same clips upconverted in BMD 1080i50/p25 Premiere project. This time hardware downconvertion on PAL monitor looks maybe a bit too soft but overall quality is IMHO very good. I mean Multibridge Pro outputting HD resolution on PAL monitor. I need this setup to edit in HD but PTT to Betacam SP recorder. It looks like 1080 to SD is good but 720 to SD is bad.

  Now the main problem… While RT hits limit U need to render. Right? Now is a problem with this. Every little bit of rendered videos on HD timeline even with zero FX manipulation have strange levels shift with tendency to fall a bit to green color and add vertical ghost lines. So “red line not rendered” portion has good color and it changes to bit greener and with ghosting lines after rendering. This “thing” is non existent in SD projects.
  Can U explain why is that? I do not know if it is a RT down conversion problem or codec rendering fault. This seams unacceptable for me and in current state I will stop my experiments and will wait for Yours answers. Am I missing something?

  Robert Falkowski
  http://www.mmstudio.com.pl

Reply to this Discussion! Login or Sign Up