View Full Version : Editing Problem
2007 August 25th, 13:17
I recently purchased an HV20 camera and have been trying to edit footage on my computer (Imac 2Gz Intel Duo Core, 2GB RAM). Everything generally works fine, I can import footage (HD 1080i-25) and transfer it back to tape. However, I have noticed that shots involving pan or zoom (relatively slow) have a generally jerky appearance after import and transfer back to tape. On the original tape these shots are smooth. Any one else have similar problems and can suggest possible causes or solutions ?
Tim G Munich
2007 August 26th, 06:37
a generally jerky appearance
what do you mean ? do you feel like you loose frame ? is it just on Mac screen ? do you see same problem when back to tape ?
for me, I do have feeling moves are not smooth when working on Mac, and this must comes from the non-homothetic speed with apple display frequency - speed of computer may also involve as well as the gop-styled codec (hdv is mpg)
2007 August 26th, 07:50
Thanks for your response. I am currently watching footage on a standard widescreen TV using the composite output (I will get a HD TV soon). Played directly from the camera the footage appears smooth on playback i.e. all pans and zooms look normal and smooth. If I download the footage to iMovie 06 (capturing in real time), some pans and zooms look jerky (on both the Mac and upon replay on TV after transfer back to tape). I think it has something to do with iMovie's capture from the camera.
2007 August 27th, 20:25
if you have same problem after editing and back to tape, that cannot be the monitor nor the display output.
some leads to seek :
- does iMovie interprets correctly the footage (25p or 50i PAL), or is it set to NTSC project for instance ?
- hardware performance of your Mac (including hard drive) could get involved here ?
maybe try to capture using a different drive and check your settings... even if I'm sure you've aleady checked that part.
if you can, check capture/edit/render to tape from final cut pro
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