Two pass vs. one pass encoding

vbimport

#1

Hello,

I am trying to determine if two pass encoding results in a noticably better output file. I rip my DVDs to mp4 (h264/aac) at 2250kbps. I tend to notice more glitches, video corruption, etc on a two pass encode during playback.

Can anyone provide some insight into the quality difference you can expect from two pass? Should I just stick with one pass or will I get noticeably crappier rips?

Thanks!


#2

Hi, I’ve seen various opinions on this subject Buzz, and here is mine. One pass is usually good enough for most movies where the action moves along more or less smoothly. If on the other hand if the movie is one that has a lot of almost still scenes that switch instantly to a very fast action with a lot of camera movement, with one pass you might see a studder at the transition. Two pass in that case will allow smoothing in the second pass. It’s really a judgement call on your part. I find one pass works well for me on most everything.


#3

With H264 and a bitrate that high, I don’t think you could see the difference. I can’t.


#4

[QUOTE=signals;2139535]With H264 and a bitrate that high, I don’t think you could see the difference. I can’t.[/QUOTE]

I’m sure that’s right, I never go that high. 1500 is about my max and it works a treet!


#5

[quote=90312;2139539]I’m sure that’s right, I never go that high. 1500 is about my max and it works a treet![/quote]I max mine out at about 1200 so I’m sure our results are similar.:slight_smile: