DV comb lines

[kenleeliew]

Hi there! I am experiencing some problems with transferring my DV to the computer. My DV model is DCR-HC21E, PAL. Playback of recorded videos on the handycam itself appears perfectly fine, but when i edit the videos (13GB per hour) in video editing software like Virtual Dub, I find very obvious comb lines. As such, the video appears awkwardly ragged. The funny thing is that in Windows Media Player, the DVs are alright. As I use my videos mainly for editing, this problem hampers me. How can I slove it? I suspect a video codec incompability problem(?). Thank you.

[edDV]

Hi there! I am experiencing some problems with transferring my DV to the computer. My DV model is DCR-HC21E, PAL. Playback of recorded videos on the handycam itself appears perfectly fine, but when i edit the videos (13GB per hour) in video editing software like Virtual Dub, I find very obvious comb lines. As such, the video appears awkwardly ragged. The funny thing is that in Windows Media Player, the DVs are alright. As I use my videos mainly for editing, this problem hampers me. How can I slove it? I suspect a video codec incompability problem(?). Thank you.

This is the way interlace video looks on a computer monitor and is perfectly normal. Certain viewers like WinDVD, PowerDVD, and WMP to a limited extent will realtime deinterlace the DV video for computer viewing but the software must work hard to present a display. Some take short cut and only display a single field (half vertical and temporal resolution) some bob and/or weave.

After you edit the material, it will play back in full quality from the camcorder back to a TV, or it can be encoded to DVD MPeg2 for DVD viewing.

Higher end DV editing programs provide realtime viewing through the camcorder to a TV.

[junkmalle]

Learn to love the DV interlace comb lines. That is what is actually in your DV files. VirtualDub shows you the actual frames as stored in the DV file, Windows Media Player hides the comb lines by performing a BOB deinterlace during playback.

Each frame of video contains half of two separate pictures. When they are displayed on a television the half pictures are displayed sequentially, but they are stored in the DV file interlaced together. If you copy your DV back to the camcorder it will play normally, If you burn a DVD with the interlaced video (using the correct field order settings) it will display properly on the TV.

[lordsmurf]

Read this:
http://www.digitalfaq.com/dvdguides/capture/understandsource.htm#interlace