Daniel,
I'm doing backup of my video tapes to divx. I'm recording to
512x384,4000kbit/s
and then transcode(2pass,yuvdenoise filter) it to 384x288,800kbit/s to get
"near dvd quality". My card is avertv studio, i'm using mdk8.2.
I successfully recorded some shows from tape, but now I have problem:
At certain position, fps is going down from 25 to cca.18 (in stream are
false frames, distorted sound). I tried to record with DIVX4rec, ffmpeg,
transcode. Result is same. Then I tried with resolution 384x288, result is
same.
Is it a certain position on a certain tape? If so, it may be visual
noise. Watch that part of the tape.
I've been backing up my NTSC videotapes, and have no problem getting
480x480 at 60 feilds per sec most of the time. There are frames dropped
in the first half a second, at the two minute mark, and if another
process is active. Like yours, this is a two-pass process. The video
is only captured to quicktime in real time. Denoising and transcoding
are done afterwards. (However, if that is the case with yours, I'm not
sure why you are recording to a bitrate, and not a quality percent.)
Annoyingly, having 'top' active is enough to hinder encoding.
-James
