Would a MAXIMUM bitrate of 9.0 trouble any legacy DVD players?

[Bansaw]

I am mastering a DVD and am choosing an average bitrate of about 4.7.
There is a maximum setting.
Can I leave this as 9.0?

If I master this DVD with 9.0 maximum bitrate will this "trouble" any legacy DVD players out there, or will there be no problem?

[videopoo]

In my experience Ive seen some players which dont play well with higher ceiling bitrates on burned media. Its always good practices to be on the conservative side with bitrates IMO. Wish I had the list, but the QC company we submit to has all this info sealed up....comprehensive details on just about every player made

If you plan to go to replication with this id make sure you dont have any bitrates spikes before submitting the job. This is standard practice with the analyzer we use here the studio I work for.

[Cornucopia]

If that "maximum" were truly THE actual maximum or CBR, that would be one thing, but I don't think there would be that many players having trouble with it. Remember, that's not the AVERAGE bitrate (4.7Mbps is), that's a momentary peak. And the dvd spec says the maximum should be under 9800kbps (aka ~9.8Mbps), not 9.0. Of course, you still need room for audio and/or subs and the total of all media streams must be under max 10.08Mbps. So there's still some room to roam.

But WITH GOOD MEDIA, a burned disc should be ok in the great majority of late model players (don't expect much from ~pre-2005 machines). How "legacy" are you talking about?

If you are MASTERING, that implies replication. Stamped discs should be able to use the full payload bitrate, but as videopoo suggested, you want to verify your media truly falls under that ceiling. Use something like PixelTools, MPEGAnalyzer, BitrateViewer, etc to accurately see if both your encoded assets and your final AUTHORED content are compliant (as lots of encoders will TRY to encode to that max and REPORT that max, but have actual peaks that exceed their own reporting).

Scott

[pandy]

Perhaps it will be OK for not burned DVD media i.e. normal - non recordable, for recorded DVD there is practically no chance to provide sustained max bitrate unless DVD player spin DVD faster than 1x (then with help pf some buffer it can compensate reduced quality for signal written on DVD)

[Bjs]

Legacy also takes into account.

1: Brand of media and burn speed.
2: Not fill the disc to capacity.
3: Make sure menu stills use actual number of frames.

Ie: if pal then still menu must have 25 frames per still image.

4: Do not include audio in mp2 format.

[Cornucopia]

Perhaps it will be OK for not burned DVD media i.e. normal - non recordable, for recorded DVD there is practically no chance to provide sustained max bitrate unless DVD player spin DVD faster than 1x (then with help pf some buffer it can compensate reduced quality for signal written on DVD)

Not true. I've made test discs using MAM & TY & Verbatim (good kind) in both DVD-R and DVD+R that explicity use CBR encoding at just over 9Mbps that work fine, no skips, in MANY players.

You've got to remember, the DVD-Video spec takes this into account. Spin rate of 1x gives a data payload readout of ~11+Mbps, with (normal) error correction needs taken into account, thus giving the expected max 10.08Mbps media stream bitrate. So unless your media has major errors (bad media, burning) or your DVD player is not fully up to spec (knock-off Chinese brand) or your player doesn't EXPLICITLY have support for Recordables/ReWriteables, you shouldn't be having trouble. These days, most people are skimping on that 1st issue (and sometimes on the 2nd), so in those cases, there will be problems.

Scott

edit: Like I said before, one problem not considered by many is the fact that encoders shoot for a bitrate goal, but they sometimes OVERSHOOT, and DON'T TELL YOU. That's why it's good to have both good/better encoders & bitrate verifiers. Of course, if the max is actually going over the spec limit (and the authoring software doesn't catch it), you would expect there to be problems because the hardware player buffers won't be able to handle the extra data (overflow).

[pandy]

Not true. I've made test discs using MAM & TY & Verbatim (good kind) in both DVD-R and DVD+R that explicity use CBR encoding at just over 9Mbps that work fine, no skips, in MANY players.

My experience shows that burned and pressed DVD is slightly different, also way how DVD is recorded is very important - recorded DVD deteriorate quite fast, after some time reading can be problematic even if they are stored in optimal conditions.
In my opinion this is quite common.

[Cornucopia]

Deteriorate? You've got bad media, my friend. I have burns from 2000 that still play fine.

Scott

[pandy]

Deteriorate? You've got bad media, my friend. I have burns from 2000 that still play fine.

Scott

Nowadays even good media can be counterfeit one...

Use kprobe to compare quality.

[bendixG15]

Nowadays even good media can be counterfeit one...

Use kprobe to compare quality.

I went to the kprobe site and got this message about kprobe ..........so I left

...... is designed to work only with LiteOn DVD/CD burners.