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How to edit AVCHD files with a SLOW PC

Last post 07-01-2009, 12:04 by Tony P. 8 replies.
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  •  06-11-2009, 17:41 314848

    How to edit AVCHD files with a SLOW PC


    I recently came back to editing with studio 12 after last using Studio 7 a few years back...  I started with the original Studio DV almost 10y ago and at the time my 120 MHZ Pentium / 128MB RAM could handle DV footage perfectly. Unfortunately now, my 3-year old dual-core pentium is too slow to edit hi-res AVCHD files at 1920x1080/60i (shot with canon hf100). So what I have done so far is first batch convert my AVCHD clips to MPG files (using AVS video converter 6) and do my edits with those. Then I painstakingly write down the list of edits in excel (clip file name, start time, end time) before creating a new project dropping all the original MTS files on the timeline in the same order and trim them according to my made up EDL (edit decision list). That's the rough edit of course...

    As you can imagine, all that takes a long time so I have these questions:

    1) Is it possible to convert the AVCHD files to high quality MPEG-2 indentical in resolution (1920x1080) and identical in quality to the original and have a slow computer handle them? AVS can't make 1920x1080 MPEG-2 beyond 15mb/s (vs AVCHD at 17mb/s) and I can edit in studio with those files. But the quality is far (very far) from the original. Has anyone done that? and what tool should I use to make these? 

    2) Is there a simple way to automatically "substitute" the files withing the studio projects? replace all the xxx.AVI (or xxx.mpg) with xxx.MTS during the "make movie" process?  maybe there is a utility that can do that? 

    [Some may recall (when most hard drives only held 30MB! yes you read correctly) how the old versions of studio allowed capturing clips and editing at low resolution before reading the full resolution from the tape during the "make movie" process. it didn't work so well because of the tape transport. But now we only have to deal with files. Shouldn't Pinnacle allow to do something like that for AVCHD clips? after all, it would be very easy to add that function.. just convert MTS files to small AVIs for editing and use the originals at "make movie" time! maybe version 13? ]

    3) Is there a way to export the EDL from studio? Any utility to do that? 

    4) Is there a way to automatically add clips in a studio project and trim them according to a list in a text file or excel? Maybe some kind of windows script? 

    Thank you for your thoughts!

  •  06-11-2009, 23:59 314904 in reply to 314848

    Re: How to edit AVCHD files with a SLOW PC

    stechiche:

    1) Is it possible to convert the AVCHD files to high quality MPEG-2 indentical in resolution (1920x1080) and identical in quality to the original and have a slow computer handle them? AVS can't make 1920x1080 MPEG-2 beyond 15mb/s (vs AVCHD at 17mb/s) and I can edit in studio with those files. But the quality is far (very far) from the original. Has anyone done that? and what tool should I use to make these? 


    Please see this thread.

     

     

  •  06-17-2009, 6:56 315961 in reply to 314904

    Re: How to edit AVCHD files with a SLOW PC

    I know nothing about AVS products, except that a file conversion program I bought in 2007 did not handle AVCHD well at all, resulted in poor quality conversions, and (by pure coincidence?) ceased to function almost exactly one year after purchase.  Perhaps it was because I failed to respond to emails or pop-ups that enticed me to buy upgrades.  In any case, its failure was a main reason I bought a 2.4 ghz core 2 duo with an NVIDIA 8400 card and BD burner, which at the time was advanced fast for a small notebook.  Ah, but times change.

    Even on a 3 ghz mono core P4, it is possible to drag AVCHD files to a Studio timeline and export them as a gross batch to an HDV MPEG2 file, which can then be imported to a new timeline and edited.  The proviso is that you cannot try to edit or preview the native AVCHD mts / m2ts files.  Competing programs use "proxy files" to allow one to edit AVCHD with relatively lenient PC specs, but a slow CPU and lack of a dedicated graphics card still makes it a slow process to edit and burn an HD disc image.  Export to a semi-HD MP4 or WMV file is also a slow business.

    Anyone with an L/T commitment to AVCHD, especially if it is 1920x1080, should probably track the prices for a fast quad core system with an advanced graphics card.  $800 for an upgrade is a triffle compared to perhaps 100s or 1,000s of additional hours needed for transcoding, recoding, or rendering with a slow PC.

  •  06-18-2009, 5:52 316180 in reply to 315961

    Re: How to edit AVCHD files with a SLOW PC

    There is a product which claims to edit HD video faster than others, on a given PC.  I have no idea how well it works or if it can make a slower PC step lively and not hang on AVCHD.  But it might be worth a try.  Anything too good to be true may be just that.  But the trial version is apparently free.  My guess is that it is similar to products bundled with videocams, which burn discs or export files with no recoding.  Some freeware or donation-ware (at your own risk) does the same.  However, this one purports to offer more edit functions.
  •  06-19-2009, 7:49 316460 in reply to 316180

    Re: How to edit AVCHD files with a SLOW PC

    Alternatives are always a good thing. Thanks for sharing this JKoch. Geeked
  •  06-24-2009, 14:38 317647 in reply to 316460

    Re: How to edit AVCHD files with a SLOW PC

    Marc,

    That Loilo package topic came up on HV20.com and no one had heard of it.  I followed the link and looked at the specs, they are calling for a fairly fast dual core and graphics card with CUDA capability.

     I'm pretty much afraid a too slow PC is really too slow.  I have HF100's and you can believe Pinnacle when they state a quad core at 2.66Ghz minimum is required to edit 1920x1080.  I missed this and purchased a Dell with Q6600 (quad core running at 2.4Ghz) and that would just barely "choke along" with the cam set for 1440x1080.  A graphics card upgrade from 256MB to an Nvidia 8800GT with 512MB did allow me to edit 1920x1080 as long as I didn't get too fancy with video added to the 2nd track.  

     But even then editing 1920x1080 was not a real nice experience.  Current machine is Core i7 based and things go MUCH better.

  •  06-24-2009, 21:56 317728 in reply to 317647

    Re: How to edit AVCHD files with a SLOW PC

    Sounds like you did that upgrade at the time Studio 11 came out. Does the new Core i7 work significantly faster?
  •  06-28-2009, 22:02 318633 in reply to 317728

    Re: How to edit AVCHD files with a SLOW PC

    Actually, I upgraded to Studio 11 when it was first offered.  I had an AMD Athlon 64x 2 Dual Core +4200 and was editing HDV.  When I ordered the first HF100 I ordered a Dell with Q6600 quad core 2.4Ghz without paying attention to what Pinnacle advised.

    The Core i7 is a bit faster in some ways but Pinnacle Studio is such a "hungry beast" that even with 8 virtual cores at work rendering still goes slow.  Oh it's faster, all right, if I remember watching the Q6600 literally grind to a halt on some things.  I learned to leave and go do something else for 15 minutes or so then come back.

    What goes slow is background rendering effects, if you do color correction on a clip, then another processing effect, each one takes time.  One short had several clips where I did 3 effects on them and I just had to walk away and watch TV for an hour or two, even on the Q6600.  It does go a bit faster on the Core i7.

    One thing I learned on the Q6600 machine is that the grapics card can make a BIG difference.  It came with an ATI Radeon HD 2400 with 256MB on board.  With that card it would barely handle the HF100 files if the cam was set at 1440x1080 12Mbps, one notch down from max.  The other NLE I use would not even display video on the timeline in the edit window from 1920x1080.

    When I replaced the ATI with an Nvidia 8800GT with 512MB things changed.  Pinnacle Studio would now edit 1920x1080 17Mbps if I went at it very patiently  and put up with an agonizingly slow pace.  And the other NLE also worked.

    The Core i7 machine is showing a few signs I may be real wise to upgrade it's video card down the road.  It has an ATI with 512MB but I suspect we are really going to be better off with 1GB there.

    The other NLE I try to use literally "flies" on this machine, but there are a few things I really can't live with that Studio does a lot better...

    ...So that's my story and I'm sticking to it.

  •  07-01-2009, 12:04 319302 in reply to 318633

    Re: How to edit AVCHD files with a SLOW PC

    Hopefully, the next version of "Studio" will make use of all the cores some of us have and better rendering.
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