45 Min Video takes 10 Min to burn 1 hr takes 1 hr

  PaulB2005 19:21 29 Dec 05
Locked

I have two video files (MPEG-2). One is 45 minutes long and the other an hour long.

I've just burnt the 45 minute one to DVD as a DVD video and it took about 10 minutes or so.

I've just set up the 1 hour one expecting about 15 minutes and it predicts it'll take over an hour!

45 mins footage = 15 mins converting and burning
60 mins footage = 60 mins converting and burning


As far as i can see both videos were shot, recorded and converted to MPEG-2 with the exact same settings. I'm using the same settings and template to burn the DVDs in Nero Vision Express.

Why might this be?

  bremner 20:14 29 Dec 05

Forget the time what are the relevant file sizes?

  PaulB2005 16:12 30 Dec 05

45 min footage 1.61 GB (1,731,260,416 bytes)

60 min footage 2.25 GB (2,426,863,616 bytes)

  PaulB2005 16:20 30 Dec 05

Apart from the differnces in Resolution this is the info Nero gives me on each file.

45 Min

Book Type setting: 'Automatic'

Sample format: Automatic
Audio format: Stereo
Encoding mode: Fast Encoding (1-Pass)

Number of titles: 1
1. 45 min Footage (Video Title, 0h 42m 37s)
Video mode: PAL
Aspect ratio: 16:9
Quality: Standard play (5073 kbps)
Resolution: 704 x 576 (D1)
Audio SmartEncoding ratio: 100.0 %
Video SmartEncoding ratio: 100.0 %

Number of menus: 1
- Main menu (1 page)

################

1 Hour

Book Type setting: 'Automatic'

Sample format: Automatic
Audio format: Stereo
Encoding mode: Fast Encoding (1-Pass)

Number of titles: 1
1. 60 min Footage (Video Title, 0h 59m 41s)
Video mode: PAL
Aspect ratio: 16:9
Quality: Standard play (5073 kbps)
Resolution: 720 x 576 (CCIR-601 D1)
Audio SmartEncoding ratio: 100.0 %
Video SmartEncoding ratio: 100.0 %

Number of menus: 1
- Main menu (1 page)

------
When watching the screen whilst the 45 minutes one is encoding it looks like you are watching Benny Hill (speeded up many times) but the 1 hour one only looks slightly faster.

  PaulB2005 16:29 30 Dec 05

OK. I've just copied some old footage from a USB backup drive. All recorded using the same settings. Those are all about 58-64 minutes long. When burning to DVD each one is predicted to take 17-19 minutes and sure enough the encoding runs very fast. Except the first bit of footage i shot which even though i'm sure the settings haven't changed wants to take an hour to burn the DVD.

I guess something is different somewhere and it'll be very difficult to work out what so i'll tick as resolved.

  PaulB2005 17:33 30 Dec 05

Just re-converted the original footage to MPEG-2 and the new 1 hour footage that did threaten to take 1 hour to encode now shows 15 minutes.

Must have changed a setting somewhere to make it take so long....

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