video jerking me about

[erich hartmann]

hello experts,
i just downloaded a tv series torrent and found the vision was all jerky and jumping about but the sound was ok.

i assume the file was ripped from a dvd or directly from the tv, perhaps it wasnt done properly.

anyway after running it thru gspot it has about 23.976 fps and its an xvid codec.

i couldn't play it with WMP or Winamp but it worked fine with vlc player............go figure.

also i have noticed that most xvid files are extremely dark, why, this particular one is so dark that most scenes are almost totally black............is this an original processing error or is this normal for xvids??

[redwudz]

It's not unusual for that type of video to be dark. It may look more normal when displayed on a TV. Video tends to look a little dark on a computer monitor, compared to a TV.

VLC uses it's own codecs. If it plays the file properly, then you likely have a codec problem with your installed codecs. If VLC still displays the 'jumping', then it may have been encoded improperly. Not surprising, considering the source.

I would drop it into VirtualDub or VirtualDub Mod and check for errors. You can lighten it up there also, if needed. You will have to re-encode it, though. That may fix it if your codecs aren't at fault.

And welcome to our forums.

[erich hartmann]

thanks for the reply, i had a look at virtdubs internal levels tool but it seemed a little complicated.........is there anyother tool you can add to virtdub to brighten?

[redwudz]

Many VD filters here: http://neuron2.net/
But for that, just use the brightness/contrast filter. Or from the above site, the WhiteBalance Filter by Jim Leonard does all that and a bit more. It also has a preview that the brightness/contrast filter lacks. If you use the brightness/contrast filter, you will have to use the 'Preview filtered' to see what it will look like. I also use the RGB filter for fine tuning of the color balance.

Even the 'levels' filter is not that complicated. Just click the preview and play with the sliders a little.

[Supreme2k]

video jerking me about



Yes, I've spent many a night with those types of videos. 8)

[erich hartmann]

i used that brightness/contrast filter and it worked well.
i used the full processing mode and selected xvid as my codec (the video file was xvid) this also fixed the video jerking problem.

however, the new file was over 400mb compared to the original 350mb..........i must have made some mistake somewhere with the settings, i wish the new file to be the same size.

[erich hartmann]

also what would the experts recomend.................VD or VDmod??

i downloaded both but cant see any real difference for doing simple tasks.

[redwudz]

I generally use VD Mod, but I work with a lot of MPEGs that I convert to Xvid or other AVI formats. I also prefer the way it handles the audio compared to the regular VD. It's built on VD 1.5.10.2.

For Xvid, you can adjust size/quality by using the Target Quantizer for easy quality adjustment or use the Target Bitrate for easy size adjustment. (Just click the button and it changes)

VirtualDub is well worth learning. It is one of the most versatile AVI tools around. It can also capture video, edit video and frameserve video to a MPEG encoder after editing. Frameserving eliminates saving the edited file as a AVI. You just convert it directly to MPEG. Saves a lot of space.