Compress DIVX/AVI files

kmufc77

kmufc77

kmufc77

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I have some Divx/Avi fles i need to compress as they are too big/too many minutes,what program can i use please?
 
You could use autogk or handbrake, but it's a pointless task imo.. You'll just have worse picture quality and sound quality.

How big are the files / how long are the files and how long/big do you want them?
 
bledd. said:
You could use autogk or handbrake, but it's a pointless task imo.. You'll just have worse picture quality and sound quality.

How big are the files / how long are the files and how long/big do you want them?
Click to expand...

Files are around 700mb to 1.5gb but they are over 120mins which mean it wont fit onto a DVD

Edit:

Think ive sussed it and im buring the Files as data and not directly using Nero Vision.
 
Last edited:
manbearpig said:
You can fit 4.7GB on a DVD cant you?
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Its not the space,its the amount of minutes im having issues with,im using Nero Vision and the files are well within the DVD capacity.

The problem is the files are over 120mins and a blank DVD R cant record over 120min
 
Can only have 120 minutes on a DVD-R? So how come on lots of mine I have 4 hours plus?

Look up some software called ConvertXtoDVD.

Stoner81.
 
Is it absolutely essential that you convert your DivX/AVI files to DVD-Video (MPEG-2/VOB)?

In other words, can the device you are intending to use for playback read DivX/AVI? Only if you are using something like an old standalone DVD player will there be any need to convert to DVD-Video and you might be better off investing in a more capable player. If it has to be DVD-Video then, as mentioned by others, quality is going to be lost as you are required to transcode the AVIs.

On another note, I find this '120 minute capacity' thing extremely confusing and somewhat arbitrary in the case of DVDs and I would be grateful if anyone can explain it. With CD-R at least, the capacity in minutes of (2-channel 16-bit audio at 44.1 kHz) is calculable given the true disc size in sectors of 2352 bytes, i.e. an '80 minute' CD-R is typically 360,000 sectors and can hold approximately 700 MiB data or 807 MiB of CDDA.
 
ncjok said:
On another note, I find this '120 minute capacity' thing extremely confusing and somewhat arbitrary in the case of DVDs and I would be grateful if anyone can explain it. With CD-R at least, the capacity in minutes of (2-channel 16-bit audio at 44.1 kHz) is calculable given the true disc size in sectors of 2352 bytes, i.e. an '80 minute' CD-R is typically 360,000 sectors and can hold approximately 700 MiB data or 807 MiB of CDDA.
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There is no 120 minute limit.
 
I know. What I'm asking for is someone to explain, in technical terms, why manufacturers assert that a 4.7 GB disc has a capacity of 120 mins.

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That 120minute thing is when you are using it in DVD recorder or DVD video camera. Uncompressed mpeg. You can squish more on there
 
Well i must be doing something wrong then?

As when i use Nero Vision and the file is above 120mins but the actual size is around 700mb to 1.5gb ish,i get told there is not enough space on my blank DVDR?

I dont get it as the DVD is 4.7gb,if the file is under 120mins i can copy onto the DVD.

Ill try using some other program as mentioned above,ive not back-up things for many many years but i dont ever remember having this problem.

Thanks very much for you help.

Edit:

So all in all,i have to lower the bitrate which will of course lower the quality.

So in Nero Vision i have to change the Quality setting over 120mins,im sure this is the problem im having

Changing to long play will allow over 120mins and let me record at 180mins:






Its seems i have finally found the solution
 
Last edited:
bledd. said:
That 120minute thing is when you are using it in DVD recorder or DVD video camera. Uncompressed mpeg.
Click to expand...

I'm dragging this on a bit, and I'm sorry, but no one has yet shown why 4.7 GB is equivalent to 120 minutes. Dividing this run time into the capacity gives an average overall bitrate of approximately 5.2 Mbps. Somebody please show me where this is defined as a standard. I'm starting to get the impression someone plucked 5 Mbps from the air, rounded it to 120 minutes and stuck it on their label... and other manufacturers followed. In which case it is pointless, unlike the case of CDDA on a CD-R.

'Uncompressed MPEG' are two terms which are mutually exclusive since MPEG, by definition, describes a number of methods for the compression of A/V data. The source data rate for 720 x 576 PAL video in the 4:2:0 YUV colour space at 25 fps equates to approximately 124 Mbps. A DVD-R would just about hold five minutes of this.
 
I think the 5Mbps thing is just a good compromise between quality and duration, a DVD can support up to 9.8Mbps.

You're right though, there is no defined standard, a 3Mbps MPEG2 at PAL resolution would be watchable.
 
Take a look at this aneesoft DVD creator, allows import different video formats (even HD videos) such as AVI, MP4, WMV, FLV, DivX, VOB, M2TS and MKV for outputting to home movie DVDs, as well as create DVD folders and ISO image files, and add up to 60 videos at a time for burning to DVD files saved me much time.
 
ncjok said:
I'm dragging this on a bit, and I'm sorry, but no one has yet shown why 4.7 GB is equivalent to 120 minutes. Dividing this run time into the capacity gives an average overall bitrate of approximately 5.2 Mbps. Somebody please show me where this is defined as a standard. I'm starting to get the impression someone plucked 5 Mbps from the air, rounded it to 120 minutes and stuck it on their label... and other manufacturers followed. In which case it is pointless, unlike the case of CDDA on a CD-R.

'Uncompressed MPEG' are two terms which are mutually exclusive since MPEG, by definition, describes a number of methods for the compression of A/V data. The source data rate for 720 x 576 PAL video in the 4:2:0 YUV colour space at 25 fps equates to approximately 124 Mbps. A DVD-R would just about hold five minutes of this.
Click to expand...

Sorry, only just saw your reply.

I think the 120m must be the typical length that DVD recorders will record audio/video to a disc
 
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