Advanced Exporting problems with premiere, Virtual dub

kearlywi · Post by **kearlywi** » Mon Sep 15, 2003 4:29 pm

I am using method 3 of editing in premiere as detailed in eadfag (i.e. edit with MJPEG, switch out later with .avs files). I am only 1/4 done with my amv, but I felt like exporting it to see how it looks with perfect quality (the picvideo MJEG codec is not very flattering in editing). I hid my MJPEG files, then told my premiere to take the .avs files instead. I previewed all the neccessary areas. So far so Good.

And heres where the shit hit the fan. I have a lower end computer (Celeron Processor, 512 sdr RAM, master drive is only 20 GB (with a 120 GB slave)) so my virtual memory is decent if not low. It has never given me serious problems until now. When I export my timeline, the entire process would only take a matter of minutes, except after processing about 15 seconds of my timeline, my computer crashes do to lack of virtual memory (all other applications are closed, there is no wallpaper, etc).

Realizing that exporting my entire 50 seconds was impossible, I created 4 work areas and exported the 50 seconds in three 15 second peices and one 5 second peice. This came very close to crashing my computer but it just survived. I opened up the clips (my clips are Huffyuv compressed and run at 30 fps, which is the rate premiere edits at). They played PERFECTLY (no skipping, still in perfect sync). Yay!

Now all I have to do is open up my first clip, then "Append AVI segment" the other 3. I open up VDUB, and because all four clips are the same resolution and framerate (and color type) they append nicely. I set up all my filters and compression, and I export a xvid (1st pass) file with sound. After the encoding completes, I view the file. Not long into the file (before where the 2nd file appends) the file begins very quickly to fall out of sync, skip critical frames, and slow down by as much as 10 times whenever any fancy editing crosses the screen (i.e. movement effect). According to VDub, the audio is running at 30.001 fps. So running my video at 30 fps should not cause such blatant problems (the HuffyUv source clips (15,15,15,5) ran at 30 fps and were perfectly in sync without ever skipping frames or slowing down). I tried encoding it at 24 fps, but that didnt work either. The file actually seemed more in sync for some reason, but the slow down was not improved and the file was still terribly damaged.

I read the guide again, and I double checked all of my advanced settings. My max bitrate is 10000. (the guide implied that this would be as high a value as I would ever need, and recommended lowering it if possible).

[I have considered the possibiliy of swapping xvid 1st pass files instead of .avs files (I dont have enough space to swap with huffyuv, which would take about 100+ GB for an entire anime series, which is what I am using) so that Premiere could process the entire the entire vid without running out of memory. However, this would mean my final product would be an XVID of an XVID. It would still be good quality, but not perfect quality.]

kearlywi · Post by **kearlywi** » Mon Sep 15, 2003 4:47 pm

Ok, I have determined that the problem lies in XVID. My amv uses a LOT fading and more often than not I have several layers of film stacked on top of each other (you can see one or more through the other). Because of this there are no stagnant pixels in my video, and there is an extremely high level of movement. I exported the appended segments (In VDUB) using a huffyUv compressor this time instead of Xvid, and the result was a huge (85 megs for 7 seconds) but perfect video. No slow down. It wasnt the least bit out of sync. No frame dropping. The problem is, of course, that I need XVID to work, or I'll have a to use a second rate compressor, and at that point I might as well have made the thing from fansubs.

Has anyone else ever had difficulty with XVID not being powerful enough?

Dannywilson · Post by **Dannywilson** » Mon Sep 15, 2003 5:18 pm

If you want to export the bloody thing in one shot from premiere, go into every one of your .avs files and add this line as the first line in all your scripts:

Code: Select all

setmemorymax(10)

It should keep you from crashing from lack of memory.

SS5_Majin_Bebi · Post by **SS5_Majin_Bebi** » Tue Sep 16, 2003 1:38 am

ah, yes. The setmemorymax option. Thats hidden in the guides pretty well though.

kearlywi · Post by **kearlywi** » Tue Sep 16, 2003 3:56 am

Alrght, worth tryin.

thank you.

Doesnt solve my xvid problem though. XVID isnt properly encoding my file out of premiere or VDUB, which sucks cause its always worked before, and is the best codec overall in my opinion. My guess is all the fade ins and pixel changes are too much for it. Fast motion divx encoded the file quite nicely as did huffyuv, but xvid maintains it problems (frame dropping, lag, out of sync due to first 2 problems, mysteriously out of sync to begin with, etc.)

Has anyone ever made a really flashy vid and noticed this about xvid before?

SS5_Majin_Bebi · Post by **SS5_Majin_Bebi** » Tue Sep 16, 2003 4:08 am

kearlywi wrote:Alrght, worth tryin. thank you.

Doesnt solve my xvid problem though. XVID isnt properly encoding my file out of premiere or VDUB, which sucks cause its always worked before, and is the best codec overall in my opinion. My guess is all the fade ins and pixel changes are too much for it. Fast motion divx encoded the file quite nicely as did huffyuv, but xvid maintains it problems (frame dropping, lag, out of sync due to first 2 problems, mysteriously out of sync to begin with, etc.)

Has anyone ever made a really flashy vid and noticed this about xvid before?

Yes. Happens to me alot. I also ripped and compressed The Matrix onto my computer, tried XviD and it didn't agree with it at all. Mass smiring and pink blocks everywhere. My guess is theres just some video streams XviD doesnt like much.