bd rebuilder question

[zx_6r]

i would like to make my bd(movie only) copies work in a dvd player, but its not a must.
is there a quality difference between bd-5(resized 720p) and alternate dvd-5 format?
thanks

[RobertM]

As far as your DVD player goes, there is a HUGE difference between the 2 formats; DVD-5 will play on your DVD player, and BD-5 will not. BD-5 is still Bluray format, although it has been squeezed down to fit on an single-layer DVD-R. Your DVD player will not recognize this format.

[zx_6r]

As far as your DVD player goes, there is a HUGE difference between the 2 formats; DVD-5 will play on your DVD player, and BD-5 will not. BD-5 is still Bluray format, although it has been squeezed down to fit on an single-layer DVD-R. Your DVD player will not recognize this format.

i know about the player format difference.
so is there any insight as to the quality of the video? (bd-5 720p vs dvd-5)
is it the same or sameish quality?
if so, why would anyone use bd-5 720p when they could have a dvd compliant disc?

[chadsdsmith]

I honestly don't have experience making either disc but I can tell you that any disc formatted for a regular dvd player will not have hd resolution, so there will definately be a quality difference. 480 is the most resolution you will get, unless the dvd player is capable of playing back avchd, but even then you would want the bd-5 output.

[jdobbs]

i know about the player format difference.
so is there any insight as to the quality of the video? (bd-5 720p vs dvd-5)
is it the same or sameish quality?
if so, why would anyone use bd-5 720p when they could have a dvd compliant disc? You can put a video that is 1920x1080p using the H.264 codec (AVC) on a BD-5. The most you will get on a DVD-5 is 720x480 (NTSC) or 720x586 (PAL) and it will be interlaced. Also, DVD uses the much older MPEG-2 codec. Depending upon its use AVC can be as much as 4x (usually a little less) more efficient than MPEG-2.

So what I'm saying is that it isn't even close to "sameish" -- BD-5 is high definition and DVD-5 is standard definition.

[zx_6r]

I honestly don't have experience making either disc but I can tell you that any disc formatted for a regular dvd player will not have hd resolution, so there will definately be a quality difference. 480 is the most resolution you will get, unless the dvd player is capable of playing back avchd, but even then you would want the bd-5 output.
You can put a video that is 1920x1080p using the H.264 codec (AVC) on a BD-5. The most you will get on a DVD-5 is 720x480 (NTSC) or 720x586 (PAL) and it will be interlaced. Also, DVD uses the much older MPEG-2 codec. Depending upon its use AVC can be as much as 4x (usually a little less) more efficient than MPEG-2.

So what I'm saying is that it isn't even close to "sameish" -- BD-5 is high definition and DVD-5 is standard definition.

thanks for clarifying
i didn't think about the codec difference and resolutions get me mixed up.
now i don't know why anyone would use dvd-5, compatibility maybe.

[jdobbs]

thanks for clarifying
i didn't think about the codec difference and resolutions get me mixed up.
now i don't know why anyone would use dvd-5, compatibility maybe. A lot of people haven't bought Blu-Ray players yet -- so they can't play BD-5. Also, some people like to make a DVD copy of their blu-ray discs so they can use it on DVD players they may have (like in a bedroom).

With low-end Blu-ray players selling at around $50 these days, I expect you'll eventually see fewer-and-fewer DVD backups, though.