GP2X Vob Player For Gp2x?
- Thread starter cbox
- Start date
Vimacs
Don't be evil!
not before the hardware decoder is re'd, at least not at usable speed.
NoidZ
Mind the world, need for panic
Why would you want to play .vob files on a 320x240 screen? That's just a waste of time, and a wast of you battery (cause I think they won't live longer by using (1.024gig x 4)files 
Squidge
Certified Guru
You'd still have to rip, otherwise the files would be encrypted. Secondly, has anyone benchmarked file i/o through the usb port? Is it fast enough to read standard, decrypted, vobs?
Also, like NoidZ has said, docoding a full size video will take extra processing power, as not only does it have to decode at full video resolution, it then has to scale it back down to a usable screen resolution, and therefore will wear down the batteries quicker.
Also, like NoidZ has said, docoding a full size video will take extra processing power, as not only does it have to decode at full video resolution, it then has to scale it back down to a usable screen resolution, and therefore will wear down the batteries quicker.
icurafu
The Hallucinogenic Elf
The gp2x's chipset has a vob decryptor attached to it's dvd player.
So, it maye be possible to play DVD movies if you had a USB dvd player attached.
So, it maye be possible to play DVD movies if you had a USB dvd player attached.
theoddbot
Certified Guru
I get about 1mbyte/sec on the usb device port. I can't imagine the host port being any faster. Full rate DVD is about 1.2 mbyte/sec, though most are less than that.
The MMSP2 is obviously designed as a DVD player chip, but I'm pretty sure not all of the necessary code to set it all up has been supplied. It would probably help if you had a dvd drive hooked up to the IDE interface
The MMSP2 is obviously designed as a DVD player chip, but I'm pretty sure not all of the necessary code to set it all up has been supplied. It would probably help if you had a dvd drive hooked up to the IDE interface
icurafu
The Hallucinogenic Elf
lol, good points. There is also the chance of storing the DVD as a virutal image on the card.
But that would defeat the purpose, as you would would have to create the DVD image and need a large-arse card to fit even an episode. (Not to mention, as you mentioned, creating software to use the VOB decrypting hardware)
If I remember back to the old DVD days, 800Kbps was the minimum.
But that would defeat the purpose, as you would would have to create the DVD image and need a large-arse card to fit even an episode. (Not to mention, as you mentioned, creating software to use the VOB decrypting hardware)
If I remember back to the old DVD days, 800Kbps was the minimum.
Squidge
Certified Guru
icurafu posted on Apr 22 2006 at 06:13 AM said:
That is true, it's just a pity you don't have the decryption keys once you've ripped the VOB's from the DVD
If your going to take VOB files from a DVD, you may as well decrypt them at the same time, it doesn't take that much longer.
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icurafu
The Hallucinogenic Elf
Squidge posted on Apr 22 2006 at 06:41 PM said:icurafu posted on Apr 22 2006 at 06:13 AM said:
That is true, it's just a pity you don't have the decryption keys once you've ripped the VOB's from the DVD
If your going to take VOB files from a DVD, you may as well decrypt them at the same time, it doesn't take that much longer.
It should have the private key inside the hardware, like any old DVD player. You don't need to know the key, you just need to know how to use the MMSP2 DVD Decoder.
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Squidge
Certified Guru
icurafu posted on Apr 22 2006 at 11:10 AM said:
That isn't how CSS works. Each VOB file may be encrypted by a different key.
Eg. quote from the MMSP2 datasheet:
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icurafu
The Hallucinogenic Elf
Squidge posted on Apr 22 2006 at 08:52 PM said:
OK, this is how I understand DVD Cryptopgraphy. Every DVD player, software or hardware contains a Unique unlock key (private). This doesn't matter, cause they could just use one (The only reason to make it unique, is so they can track down the leak). If you have one of these keys you can decrypt every single DVD on the planet. One of them should be inside of the hardware of the DVD decoder of the GP2X.
With this private unlock key you can decrypt some data and obtain the unique decryption key on the DVD. This isn't hidden so anyone can get it easily. So I would imagine you would only need to put the encrypted public key into the INPUT FIFO by DMA or PIO as described in the quote. Not the actual public key, as that would defeat the purpose of storing the private key on the GP2X hardware.
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NoidZ
Mind the world, need for panic
But why the hell would you want to play .vob files on your GP2X!?
reallynotnick
The smartest newb
I much rather have h.264 playback then VOB playback. They are just WAY to big in size.
Squidge
Certified Guru
If you just have the VOBs you can't decrypt the movie (well, without brute forcing the key). Secondly, I highly doubt the MMSP2 has a player key stored within it due to various reasons.
Anyway, it's so easy to decrypt the vobs on the pc first, you may as well do it there.
But I agree with reallynotnick - VOBs are just WAYY too big.
Anyway, it's so easy to decrypt the vobs on the pc first, you may as well do it there.
But I agree with reallynotnick - VOBs are just WAYY too big.
Squidge
Certified Guru
That's fair enough them, rip them with something like DVD Decryptor and it'll take about 5 seconds longer, and avoid the need to do the decryption on the 2X.
Maybe when we have figured out the video decoding hardware on the 2X, there will be a way to play VOBs.
Maybe when we have figured out the video decoding hardware on the 2X, there will be a way to play VOBs.
nickspoon
vultum stultum habes
Well, ffplay can supposedly handle VOB, but it's not very good at video.
Anyone ported this mplayer? http://www.mplayerhq.hu/design7/news.html . It seems to play everything. It works on Zaurus http://kirk.math.twsu.edu/family/james/mplayer.html
