VideoHelp Forum




+ Reply to Thread
Results 1 to 10 of 10
  1. I'm capturing in Sony Vegas from DV tape. I'm using the default (because I dont see any other options). It comes out as an AVI at 1536 kbps, 720x480 and 29 fps. IMO the picture quality is not 100%, the black is not solid black, it looks a bit grainy. It's okay, but not as perfect as I have seen elsewhere and it only gets worse when I render and then compress.

    My ultimate goal is to make an WMV the best quality for around 150 MB or less, preferably around 50 MB. I rendered the edited video at 3 mbs and it looks okay, but again not perfect and I've seen some nice stuff at around 1 mbs or even 900 kbps. The output needs to be at least 640 x 480.

    My next step was to use media encoder and cut it down to 1 mbs and it ends up being more pixelated and about 50 MB which is fine for file size but would prefer the quality to be better.

    So what am I doing wrong not to get a great picture in AVI format?
    Quote Quote  
  2. Member Soopafresh's Avatar
    Join Date
    Jan 2004
    Location
    United States
    Search Comp PM
    Post 10 seconds of an example somewhere. It might just be the nature of DV you're describing.
    Quote Quote  
  3. Originally Posted by Soopafresh
    Post 10 seconds of an example somewhere. It might just be the nature of DV you're describing.
    Could it be that the images are just too dark? Is that what you mean by nature of the DV? The video was fairly low light to start with, but I guess I was hoping for sharpness. I don't know how/where I could post an original avi clip, otherwise I would.
    Quote Quote  
  4. Member thecoalman's Avatar
    Join Date
    Feb 2004
    Location
    Pennsylvania
    Search PM
    Originally Posted by Chris Corn
    It comes out as an AVI at 1536 kbps, 720x480 and 29 fps. IMO the picture quality is not 100%,
    That is the audio bitrate if you're transferring as DV-AVI. That's exactly what it is a transfer. It's a bit for bit copy of what's on the cam. The file size ahould be 13-14 gigs per hour, you can also use g-spot to check it.
    Quote Quote  
  5. Always Watching guns1inger's Avatar
    Join Date
    Apr 2004
    Location
    Miskatonic U
    Search Comp PM
    Low light is murder for DV. It is inevitably noisy, and noise eats bitrate. The noisier the source, the higher the bitrate required to hold the quality. The higher the bitrate, the bigger the file. You can use filters to reduce the noise to a degree.

    You can post the file at one of the free hosts, such as rapidshare.de
    Read my blog here.
    Quote Quote  
  6. Also: all the motion handheld DV camcorder footage eats up bitrate.
    Quote Quote  
  7. Member
    Join Date
    Jan 2007
    Location
    Republic of Texas
    Search Comp PM
    How are you capturing your footage to the computer? If you are using firewire, then the DV-AVI file is exactly how your camera recorded it. But if you are using S-Video or RCA connections, you might be getting some noise artifacts in the picture. Also, make sure you have calibrated your monitor to color bars. The black level problem you spoke of may be in your monitor setting, not the footage itself.

    Also, as guns1inger said, low light raises the noise grain in the picture. Smaller mini-DV cameras are using tiny imaging chips, and they don't handle dark scenes well.
    Quote Quote  
  8. Computer monitors have darker gamma settings than televisions. You expect video to look dark on a computer monitor. If you calibrate your monitor to emulate television gamma levels everything else in Windows will be washed out.
    Quote Quote  
  9. Originally Posted by filmboss80
    How are you capturing your footage to the computer? If you are using firewire, then the DV-AVI file is exactly how your camera recorded it. But if you are using S-Video or RCA connections, you might be getting some noise artifacts in the picture. Also, make sure you have calibrated your monitor to color bars. The black level problem you spoke of may be in your monitor setting, not the footage itself.

    Also, as guns1inger said, low light raises the noise grain in the picture. Smaller mini-DV cameras are using tiny imaging chips, and they don't handle dark scenes well.
    I had some other opinions and I guess I'm picky because to them it looks okay. I guess I am used to seeing it on the tv where it looks awesome. I am capturing with a firewire and I think I understand the rest of what was said meaning it's the lowlight and the fact that its a comp screen. I am running an XL1s and so its a 3 CCD and normally the picture quality is awesome. I'm going to have to change my technique a little for web stuff I think. Like really focus on getting more light or shooting outdoors. Thanks for all the feedback!
    Quote Quote  
  10. Member edDV's Avatar
    Join Date
    Mar 2004
    Location
    Northern California, USA
    Search Comp PM
    Originally Posted by Chris Corn
    Originally Posted by filmboss80
    How are you capturing your footage to the computer? If you are using firewire, then the DV-AVI file is exactly how your camera recorded it. But if you are using S-Video or RCA connections, you might be getting some noise artifacts in the picture. Also, make sure you have calibrated your monitor to color bars. The black level problem you spoke of may be in your monitor setting, not the footage itself.

    Also, as guns1inger said, low light raises the noise grain in the picture. Smaller mini-DV cameras are using tiny imaging chips, and they don't handle dark scenes well.
    I had some other opinions and I guess I'm picky because to them it looks okay. I guess I am used to seeing it on the tv where it looks awesome. I am capturing with a firewire and I think I understand the rest of what was said meaning it's the lowlight and the fact that its a comp screen. I am running an XL1s and so its a 3 CCD and normally the picture quality is awesome. I'm going to have to change my technique a little for web stuff I think. Like really focus on getting more light or shooting outdoors. Thanks for all the feedback!
    It comes down to calibrating your system. Assuming you imported DV over the IEEE-1394, the file should be OK. The best way to monitor (for picture quality) from Vegas is via IEEE-1394 back through your camcorder to a calibrated monitor.

    Use the SMPTE color bar in the Vegas Media Generator to set black, white, chroma saturation and hue at the monitor. Since DV camcorders output analog 0-100 IRE, the monitor settings will be different than normal broadcast NTSC (7.5-100 IRE). I use separate monitor presets for 0-100 IRE and normal 7.5-100 IRE.





    When your monitor is set this way, you should see identical results playing a clip from tape or from the Vegas timeline.
    Quote Quote  



Similar Threads

Visit our sponsor! Try DVDFab and backup Blu-rays!