identify chipset & xvid problem

[Djago]

Hi folks!

I have a new DVD Player (low low low low cost ). Branded here in Argentina as Renser, model 1155. Is there any way of identifying the chipset inside?

I have some anime xvid encoded files that plays ok 'till 15' and then they stop as if it was ended (they're ~22'). No problem with DivX file and no other problem like artifacts while playing xvid file. Is there any change that I can make to those files without having to reencode them

Thanks!

[Hyper Shinchan]

Have you checked the file with VirtualDub? Maybe there is a corrupted frame. Have you tried to burn it again?

[Djago]

Didn't tried to reburn, but it's a codec thing, because I have 18 files (I mean, different files) that do the same.
VirtualDub didn't detect any bad frame, nor any undecodable.

[Hyper Shinchan]

I'm not an expert, but if it play fine for the 15' and then it stops, I don't think that it's a decoder problem, have you checked if your XivD don't have GMC or quarter pixel (but if they have it thay shouldn't play until 15' minutes, I think)?

[celtic_druid]

Well with GMC generally it plays fine until it hits an S-VOP, at least that is how it is with my player. Still I would find it hard to believe that the encoder used no S-VOP's until 15mins on 18 different files.

Most reliable way to find out a chipset, is to rip the player open and check.

[Hyper Shinchan]

Well with GMC generally it plays fine until it hits an S-VOP, at least that is how it is with my player. Still I would find it hard to believe that the encoder used no S-VOP's until 15mins on 18 different files.

Most reliable way to find out a chipset, is to rip the player open and check.

But how can you choose the type of your GMC? Do you choose an encoder with a weak GMC like the the DivX5, or there is some setting in the XivD and Nero digital encoder (the two that I usually use).

[celtic_druid]

Well strickly speaking DivX5 should have more S-VOP's as it only has to find 1 reference point. Well actually Nero Digital can make use of 1 warp point GMC to.

XviD on the otherhand if it can only find 1 reference, it encodes a regular pframe. So XviD only ever does 2 or 3 warp point GMC.

So to answer your question, the encoder chooses whether to use an S-VOP or not and the number of references.

If I recall correctly, if you encode with borders, then ND uses 1 warp point. No idea if the codec has settings to limit reference points.

XviD, at least the VfW frontend offers no limits and never does 1 warp point.

Basically if you are encoding for standalones you should not use GMC, which is not allowed under the DXN Home Theatre profiles anyway.

Other point is that only 1 warp point is supported by hardware decoders and there is a reason that XviD doesn't use it.

[wulf109]

Remove the players cover,look at mainboard for a large square chip. Does it say ESS? ESS vibrato is common in low price DIVX players.

[Hyper Shinchan]

Well actually Nero Digital can make use of 1 warp point GMC to.

It's strange, I'm not an expert, but on the Doom9's MPEG-4 faq they say that it support 3 war point

Nero Digital
the MPEG-4 ASP codec from nero is maybe the youngest one, but nero is very ambitious in becoming very popular
atm their codec is only available inside Nero Recode2 (together with a good AAC encoders (HE-AAC, Multichannel...)). ND offers only 1 B-Frame, GMC (3 warppoints), QPEL, h.263/MPEG/Custom Quants, Adaptive Quant. (Psy High) and is one of the fastest codecs around
For more infos about NeroDigital visit the official Homepage NeroDigital.com and the New A/V Formats - Codecs forum on doom9 (where you can also find some of the devs sometimes)

http://forum.doom9.org/showthread.php?t=73022.
And some players like the Siemens SCO 5000ND, Philips DVP 630 and some others (but I'vent tried this) should support 1WP GMC.

If I recall correctly, if you encode with borders, then ND uses 1 warp point. No idea if the codec has settings to limit reference points.

What do you mean with "borders"? with letter box or with square pixels?
Tnx.
Anyway about the ESS Vibratio chipset: the ESS Vibratio II is a good chipset, if there aren't idiots like the Philips's developper of the DVP 630.
Why doesn't it support AAC?

[Djago]

Gspot says that the files doesn't have QPEL nor GMC, but have BVOP and NVOP. I don't know about SVOP. Any program that can identify this?

About opening the case, I'm trying not to loose warranty, so that will be the last shot.

[celtic_druid]

It supports upto 3 warp point GMC. I never said that it couldn't do 3, just that unlike XviD it could use 1.

I already acknowledged that some chipsets support 1 warp point GMC. But as I also said, from an encoding point of view it is useless.

I would not call the ESS chipset a good one.

By borders, I mean that you don't crop the black borders off.

[Hyper Shinchan]

It supports upto 3 warp point GMC. I never said that it couldn't do 3, just that unlike XviD it could use 1.

I already acknowledged that some chipsets support 1 warp point GMC. But as I also said, from an encoding point of view it is useless.

I would not call the ESS chipset a good one.

By borders, I mean that you don't crop the black borders off.

Thank you for the esplication, I haven't understood it. Anyway, why it's not a good one? Of course isn't an high performance chipset, but it can decode MPEG-4 (with GMC 1WP, it's supposed) AAC and it support MP4 file, what is your favorite, maybe the Sigma' s one? Right?