MP4 to DVD file sizes

[Seven37]

I have a MP4 video file thats 9gb that i want to burn to DVD with a menu using DVDstyler, Now, if i choose the DVD-9 option in DVDstyler the resulting file size to be burned is around 5gb.
I would like to keep the 9gb mp4 quality.
So,am i loosing 4gb of video quality once burned to DVD?
Can i fill the DVD-9 to its 8.5gb capacity (with a bit of compression)?

[davexnet]

What is the running time of your source?

[Seven37]

What is the running time of your source?

Hi davexnet.
The MP4 video running time is 1hr 27min

[Cornucopia]

Working in a different order,
Yes, you can (and probably SHOULD) use ~up to the full capacity of the disc. That gives you the best quality for the running time.

Mp4 files could be ANYTHING, including HD/UHD material, so there is loss there.

ANYTIME you reencode using a lossy codec you are losing quality, regardless of the bitrate. So raising the bitrate will alleviate that loss, but some will still be there.
The fact that is being encoded to Mpeg2 (which DVD Video requires) means it isn't going to be nearly as efficient as the source files (which are likely AVCinMp4), so the loss in quality will be more noticeable.

Depending on what player you have and whether it supports playing raw mp4 data files, you might want to consider not converting your files at all, but just burning them as-is onto a standard DVD data disc.


Scott

[Seven37]

Working in a different order,
Yes, you can (and probably SHOULD) use ~up to the full capacity of the disc. That gives you the best quality for the running time.

Mp4 files could be ANYTHING, including HD/UHD material, so there is loss there.

ANYTIME you reencode using a lossy codec you are losing quality, regardless of the bitrate. So raising the bitrate will alleviate that loss, but some will still be there.
The fact that is being encoded to Mpeg2 (which DVD Video requires) means it isn't going to be nearly as efficient as the source files (which are likely AVCinMp4), so the loss in quality will be more noticeable.

Depending on what player you have and whether it supports playing raw mp4 data files, you might want to consider not converting your files at all, but just burning them as-is onto a standard DVD data disc.


Scott

Hi Cornucopia.
I could burn as a data disc, but i really would like the result to be a DVD playable on a standard dvd player connected to a TV, menu and all.

[davexnet]

See the Technical Info at
https://www.videohelp.com/dvd

You'll see the video bitrate maxes out at about 9mbps as per the DVD spec.
This is where your inability to fill the DVD-9 come into play

[Cornucopia]

@davenext is correct. For just 1 file that is 87minutes, at 9.8Mbps that works out to ~6.3GB as the max that it can use.


Scott

[Seven37]

Ok, thank you all very much for your help, much appreciated, thanks again.

[Santiago]

Use HandBrake to reduce the file size without any loss in video quality.

[Seven37]

Use HandBrake to reduce the file size without any loss in video quality.

hi Santiago, i'm not sure how to use handbrake, i will have a look, maybe users on here have any thoughts on using handbrake to get the results i want.

[davexnet]

No. To create a dvd use your original source in DVDStyler

[Seven37]

Ok davexnet, thanks for that.