Board index › Topical Discussion › Computers, Math, Science, and Technology

Question on large video compressing

Page 1 of 1 [ 12 posts ] 

Previous topic | Next topic

Diabolikal
Deinonychus
Deinonychus

User avatar

Joined: 15 Aug 2011
Gender: Male
Posts: 304
Location: Los Angeles CA, Somewhere in Universe

27 Jun 2016, 7:15 pm

This is probably the wrong topic board, but I've tried elsewhere like mac forums and none of those helped. Basically, I've got a project I need to put on DVD from my computer, but the video files that were given to me are too big, one is 28 GB, the other is 36 GB, both in .mov format. Does anyone know a way to seriously compress these two so they can fit onto a single disc?



saxgeek
Veteran
Veteran

Joined: 18 Jul 2015
Age: 29
Gender: Male
Posts: 730

28 Jun 2016, 3:10 pm

How long are the video files and what resolution are they at? Something that's tens of GB in size sounds like uncompressed video, which is usually that huge. I believe DVD uses the compressed MPEG-2 format for storing video data, but any DVD authoring program should automatically convert the video to the appropriate format for DVD playback. Compressed video formats are significantly smaller than uncompressed, so it may just work. If it still doesn't fit on the DVD, you can lower the resolution of the video and possibly the framerate. A video at 4k resolution will be orders of magnitude larger than one at 640x480.

Hope that helps!



Diabolikal
Deinonychus
Deinonychus

User avatar

Joined: 15 Aug 2011
Gender: Male
Posts: 304
Location: Los Angeles CA, Somewhere in Universe

29 Jun 2016, 11:49 pm

saxgeek wrote:
How long are the video files and what resolution are they at? Something that's tens of GB in size sounds like uncompressed video, which is usually that huge. I believe DVD uses the compressed MPEG-2 format for storing video data, but any DVD authoring program should automatically convert the video to the appropriate format for DVD playback. Compressed video formats are significantly smaller than uncompressed, so it may just work. If it still doesn't fit on the DVD, you can lower the resolution of the video and possibly the framerate. A video at 4k resolution will be orders of magnitude larger than one at 640x480.

Hope that helps!

Well they're about 90 minutes long in total, and otherwise thanks.



Stephen__
Yellow-bellied Woodpecker
Yellow-bellied Woodpecker

Joined: 24 Jun 2016
Gender: Male
Posts: 71
Location: Melb. Aus

30 Jun 2016, 12:07 am

Do you just need to burn them to DVD or do you need to make them playable in a DVD? If you just need to compress them I believe QuickTime has some capability there if you re-export the video or you could try Handbrake.



Diabolikal
Deinonychus
Deinonychus

User avatar

Joined: 15 Aug 2011
Gender: Male
Posts: 304
Location: Los Angeles CA, Somewhere in Universe

02 Jul 2016, 9:31 pm

Stephen__ wrote:
Do you just need to burn them to DVD or do you need to make them playable in a DVD? If you just need to compress them I believe QuickTime has some capability there if you re-export the video or you could try Handbrake.

I need them playable on a DVD, which cannot currently happen due to the fact the file size is altogether about 66GB.



dcj123
Veteran
Veteran

User avatar

Joined: 2 Sep 2009
Gender: Male
Posts: 10,796

02 Jul 2016, 9:41 pm

Tovid comes to mind, supposedly a Mac version but I do not know about any version other then Linux. I can find the command you need to create a DVD if you want but this was years ago I used this software, much could have changed.



Stephen__
Yellow-bellied Woodpecker
Yellow-bellied Woodpecker

Joined: 24 Jun 2016
Gender: Male
Posts: 71
Location: Melb. Aus

03 Jul 2016, 5:47 am

I think Toast used to have an option where you could drag in videos and it would add a basic dvd menu and compress the video down to fit on a disc. Haven't used it in quite a while so not sure what it's like these days.



BaalChatzaf
Veteran
Veteran

User avatar

Joined: 11 Mar 2008
Gender: Male
Posts: 1,050
Location: Monroe Twp. NJ

03 Jul 2016, 10:58 am

Why can't you play them from a full sized hard disk drive? You can get 250 gb external disks now for under $50.00


_________________
Socrates' Last Words: I drank what!! !?????


Diabolikal
Deinonychus
Deinonychus

User avatar

Joined: 15 Aug 2011
Gender: Male
Posts: 304
Location: Los Angeles CA, Somewhere in Universe

03 Jul 2016, 2:44 pm

BaalChatzaf wrote:
Why can't you play them from a full sized hard disk drive? You can get 250 gb external disks now for under $50.00

No, I can play them from an external hard drive, but I need them on a DVD to send out to a bunch of people, which has only 4 GB of space each.



BaalChatzaf
Veteran
Veteran

User avatar

Joined: 11 Mar 2008
Gender: Male
Posts: 1,050
Location: Monroe Twp. NJ

03 Jul 2016, 8:10 pm

Diabolikal wrote:
BaalChatzaf wrote:
Why can't you play them from a full sized hard disk drive? You can get 250 gb external disks now for under $50.00

No, I can play them from an external hard drive, but I need them on a DVD to send out to a bunch of people, which has only 4 GB of space each.


There is no way you can compress a 66 GB video file to 4 GB and retain a faithful image. That is a 15:1 compression ratio.


_________________
Socrates' Last Words: I drank what!! !?????


Diabolikal
Deinonychus
Deinonychus

User avatar

Joined: 15 Aug 2011
Gender: Male
Posts: 304
Location: Los Angeles CA, Somewhere in Universe

04 Jul 2016, 11:46 am

BaalChatzaf wrote:
Diabolikal wrote:
BaalChatzaf wrote:
Why can't you play them from a full sized hard disk drive? You can get 250 gb external disks now for under $50.00

No, I can play them from an external hard drive, but I need them on a DVD to send out to a bunch of people, which has only 4 GB of space each.


There is no way you can compress a 66 GB video file to 4 GB and retain a faithful image. That is a 15:1 compression ratio.

Crap, oh well. What about compressing down 30 GB, because the videos are in two parts?



Ichinin
Veteran
Veteran

User avatar

Joined: 3 Apr 2009
Gender: Male
Posts: 3,653
Location: A cold place with lots of blondes.

04 Jul 2016, 12:53 pm

Every time you halve the resolution you decrease the filesize by 4 (Y / 2 + X / 2). If you use MP4 you can compress it very well onto a DVD file. Some DVD players can play regular computer burned DVDs with pure .MP4 files on it, you have to check this in advance on the player in question.

I even had a DVD player that could play DivX files, as well as MP2, AVI and a lot of other formats, and that was 5 years ago.

Good luck.


_________________
"It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring" (Carl Sagan)