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View Full Version : Time required, avi to DVD -- Are these the usual numbers?


fastartcee
10th February 2004, 07:47
I'm running WinXP, 2 GHz Intel, 512 MB mem, 80 GB hard drive. Other apps closed; minimal processes in background. Times are approximate.

1. I start with a 700 MB avi.
2. NeroVision says, "Too big for DVD".
3. Proceed, with write to folder on hard drive: 3 hours.
4. Use DVD Shrink to resize MPEG to 4.35 GB: 30 minutes.
5. Back to NeroVision to burn DVD: 45 minutes.

I've tried TMPGEnc to create the MPEG, clipping the sides a bit; it's a bit faster, but not much.

Are these times about what I should expect?

Thanks.

A380
10th February 2004, 08:29
2. Too big for DVD? What settings do you use? I encode 30GB avi's to MPEG2 DVD compliant format. (depending on the datarate of course)

4. DVDShrink? Why do you use thatone? Just calculate the output file size before encoding, so you don't need the shrinkprocess afterwards.

5. Depends on your DVD writer and media, of course. Takes 25 to 30 minutes on my 2.4x DVD+R/+RW drive.

Maybe I didn't quite understand what you are trying to do, but encoding a video takes a while. Best thing is to do it overnight. If you use the batchencode function of TMPGEnc, then you can activate "shutdown after finish encoding" in the main window. And the next day burn it and then have fun watching it ;)

Also, for videoeditin/encoding, I wouldn't go for time, I'd go for quality. It's more fun afterwards.

A380

echooff
10th February 2004, 15:18
It will speed up you video encoding time if you do demux and do the video and audio seperately. I don't know what settings you are using in tmpgenc, but for me a typical xvid/divx 700mb movie including the audio comes out around 2 gig. This is using the ntsc dvd template. You can specify output size also.

A380
10th February 2004, 18:34
What's the sense in converting a 700MB Video file into an 2GB video file? I guess you get the same quality with a lower bitrate.

My Template is selfmade and it goes for quality, as that's the only thing that counts.
A380

echooff
10th February 2004, 19:08
It is just an example. Keep in mind adding more bitrate doesn't necessarily improve quality. You reach a point where it becomes redundant.

fastartcee
12th February 2004, 01:16
When I used TMPGEnc I ended up with a 4.8 GB file, which was too big. Can I change the MPEG compression ratio (within TMPGEnc) to end up with an MPEG that would be 10% smaller? The answer might be 'yes', and the procedure, obvious... but I am, after all, posting in the Newbie forum! :)

A380
12th February 2004, 11:55
Tmpgenc->Settings
Video Tab
under "Rate Controlmode" hit settings
Here you can enter your bitrate.
I use "Automatic VBR" as Rate Controlmode. Minimum bitrate 2000 and Maximum bitrate 8000.

You can calculate in advance how big your videofile gets, even though it's VBR meaning the encoder uses a bitrate between 2000 and 8000 to encode. Just take 8000kbit/s as maximum.

8000kbit/s * Movielengthinseconds / 8 = FilesizeinKByte

FilesizeinKByte gives you the maximum filesize. As the encoder doesn't use 8000kbit/s all the time (just for very complex scenes) your filesize will be below the calculated filesize.
Just put in the movielength and the filesize you want to have and make the bitrate the value to search. if your bitrate gets to low, the quality might not what you expect, the you'll have to split it I guess.

A380