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Lecteur de Blu-Ray Disc

Some information about how to choose a home BD (Blu-ray Disc) player

{This article was translated from french to english, thanks to Ron / french author = Czmax}

General information (Wikipedia source):

Blu-ray Disc (official abbreviation BD) is an optical disc storage medium designed to supersede the DVD format. The standard physical medium is a 12 cm plastic optical disc, the same size as DVDs and CDs. Blu-ray Discs contain 25 GB per layer, with dual layer discs (50 GB) the norm for feature-length video discs and additional layers possible in the future.The first Blu-ray Disc prototypes were unveiled in October 2000 by SONY, and the first prototype player was released in April 2003 in Japan. Its major competitor, HD DVD launched by Toshiba with Microsofyt support, but it has soon been abandonned and Toshiba join BD world. The name Blu-ray Disc refers to the blue laser used to read the disc, which allows information to be stored at a greater density than is possible with the longer-wavelength red laser used for DVDs. The official name is "Blu-ray disk", and not blue-ray disk. The short name, "Blu-ray" and not "Blue-ray". The acronym BD and not BR nor BRD (but you will sometimes see this acronym).

Preliminary notes - Following information is a compilation of information I get during my market survey:

1/ There are two techniques for burning Blu-ray DVDs:

  • 1st a trade movies disks are already recorded, in this case a matrix is manufactured and the holes are created by a press to materialize the bits.
  • 2nd model (used by AVID Studio and Pinnacle Studio users) discs are burned by a laser beam locally heating the surface of the disk and creating a new crystallization type materializing the bits. When it comes to a rewritable disc, erasure is obtained by a stronger heating with the laser beam.

The usual result is that it is easier to read a industrially recorded disk than a burned disk. Another consequence is that a rewritable disc is more difficult to read than a non-rewritable one, the player must have more powerful laser diodes...

2/ Ours video, photos and music are compressed to occupy less space on our media. It is done by using a compression and decompression software; together they are named CoDec (CopressionDecompression). Those compressions are done according to standards, well known are DV, Mpeg2, Jpeg, AVC, Mp3 etc. Various Codecs that perform these functions have been issued according to standard. These codecs are working more or less effectively, and compression obtained by a given codec is supposed to be decompressed by another codec corresponding to the same standard, but in practice this is not always the truth. The quality of the result is often a function also of the effectiveness of the used codec.

My goal for this introduction is to help you understand what can happen when you buy a BD or DVD home player.
Effectively they read disks already recorded industrially, but the situation becomes less obvious for the disks that we burn. First of all, the video has been compressed by a codec provided with the editing software, then the burning is more or less powerful and disk was burned at a high or low speed and the disk quality differs from one manufacturer to another. Usually, there is no problem reading a disc on the PC, but with the home player, the drive may have difficulties in recognizing the bits, then there may  be a bad compatibility of codecs and even the necessary codec may not be present in the drive because the manufacturer did not consider it useful to include it in order to avoid to pay royalty.
 

My experiences:

I began my player search with a Marque1 player, in the manual it was written that it was able to read BD – RE but when I tried, no way, The seller where I bought it, told me, that the manufacturer was aware of the issue, but that there was no target date for the correction . Subsequently the seller returned his inventory and exchanged my player for a  Marque2 which actually read the BD - RE.

My videos are often not too long, so I burned  a series of pseudo BD in AVCHD with an image BDMV (what Bertrand had suggested me) and the Marque2  read them accordingly, I then successfully  tested a BD - RE.

Then I bought a second BD player, a Marque3, I asked the seller store to test a pseudo BD  but the seller refused.  Thus I test my pseudo Blu - Ray at home, good result, a BD - RE as well .

A few months later, I burned a BD due and to its duration; I tested it on the Marque2. No way, same result on the Marque3. I then realized that we could make the BD in AVC or in Mpeg2, I tried both, no way, I burned a BD - RE and it was good!

The Marque3 was still under warranty (being suspicious I opted for 5 years warranty time) I visited the Marque3 Internet site, and found that there  was a firmware update available, So I updated, no improvement . Back to the seller, I tested my batch of BD on a Marque 4 player, they could be read, I wrote to the Marque 3 support, but received no usable answer,  Their lack of support lead me to doubt their skills, starting with the fact that they had not read my mail carefully. Support called me and after detailed explanations recognized that there was an issue,  and it was agreed that I send my work to them to be tested at manufacturer after sell shop.  With this done, they called me back, giving a statement that my player was faulty ; I gave back my player to the after sell  and a month later it was declared non-repairable and they reimbursed me.

 

Back to the store, I asked to test another reader. The seller refused to perform the requested test and  told me, take it home, test it, if it is not good, bring it back.  He loaned me a Marque 4.  Back home, I tested the different  BD types some could not be read.  Back to the After Sell.  I give it back and stated  that I demand that they do the test before I take another one. (I have had enough of unpacking and repacking players.  By chance, the seller boss arrived and I explained thesituation. He gave his agreement to test in the store I tested a Sony BDP-S570It everything read perfectly. I purchased it, return home, it's all good.

In discussing, he said to me that for the Marque2 who was able to read but fails now that it could have a dirty laser problem.
NB all these players were able to read trade BD movies.

Good purchases

 

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Comments

Gert Oskar Reitner
#Gert Oskar Reitner
Thursday, June 23, 2011 10:19 AM
Great Information !
Bill C
#Bill C
Friday, June 24, 2011 10:30 AM
Excellent essay.
I'll wait until it is absolutely necessary to go to Blu-Ray.
Bill C
#Bill C
Monday, September 19, 2011 8:57 AM
Good info.
I have a Samsung BD-D6500 player that came with 3D Samsung TV.
I haven't burned any BD videos yet but now I will try it. Just for fun.
Déclic Vidéo FX
#Déclic Vidéo FX
Monday, September 19, 2011 3:42 PM
Yeah, great !!! Keep me informed, I am eager to know the results !!! Please, let us know, and if you wish, you can even send us a review of your test, if they are complete enough, we will publish it ???

DV FX
 

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