David Landelle Posted April 22, 2005 Share Posted April 22, 2005 I have recorded a video clip in 25p with my MVR in 16/9 mode. Here is the result after blow-up in Windows Media : Test SDX800 25p (a 3GHz PC with 1280x1024 resolution is needed to view it correctly). Do you think I should get a better result ? Conditions where difficult, backfocus does not seem to be correct, and lighting...well, this is a test :) Thank you for your opinion ! Link to comment Share on other sites More sharing options...
Landon D. Parks Posted September 19, 2005 Share Posted September 19, 2005 your link is not working... Link to comment Share on other sites More sharing options...
Simon Wyndham Posted September 20, 2005 Share Posted September 20, 2005 I found some videos here http://www.lvideoservices.net/ but couldn't find the SPX800 one. Link to comment Share on other sites More sharing options...
David Landelle Posted September 20, 2005 Author Share Posted September 20, 2005 I found some videos here http://www.lvideoservices.net/<{POST_SNAPBACK}> my appologies for the dead link, clips have moved on the new web http://www.lvideoservices.net/ and the first "uncompressed" rush named "MVR16b9at25p.m2v" is a rough edit of the original material (ingest of DVCPRO50 tape by the MVR). In multicam, up to 10 feeds may be captured in real time. This is a "real-life" test with pedestal, shoulder & funny camera movements. Also shutter is sometimes not set to 1/25, as it should be to provide smooth motion blur. I got only 704 pixels of signal, instead of 720, as it should be in SDI. Panasonic told me @ IBC last week that this was not normal. I'm a programmer, not a video specialist :) and I'm interested in your opinion about "subjective" image quality (compression artifacts, chroma for keying...). Link to comment Share on other sites More sharing options...
Simon Wyndham Posted September 20, 2005 Share Posted September 20, 2005 I'm a programmer, not a video specialist :) and I'm interested in your opinion about "subjective" image quality (compression artifacts, chroma for keying...). <{POST_SNAPBACK}> From watching the clips I think you would have a problem using them as a chroma key because it looks as though the camera sharpness was set way too high. There were a lot of edge enhancement artefacts in that footage. You need to go into the menus or get an engineer to set it up for a much milder detail setting. Link to comment Share on other sites More sharing options...
David Landelle Posted September 20, 2005 Author Share Posted September 20, 2005 From watching the clips I think you would have a problem using them as a chroma key because it looks as though the camera sharpness was set way too high. There were a lot of edge enhancement artefacts in that footage.<{POST_SNAPBACK}> Thank you Simon. You are right, the first test I did (not published) was using an HD lens, and the image was naturally sharp. The rent company told me that the lens for the second test was not HD. I - stupidly - said well, I'm only shooting SD, no problem :rolleyes: they probably boosted the sharpness to try to recover that real problem. Even though, I did not get the image I saw the first time with a better lens. :( Also, the MPEG2 encoder probably suffers from excessive sharpness, and adds it's own artifacts. Link to comment Share on other sites More sharing options...
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