View Full Version : New A3 owner, Choppy video on VOB?
Transferred my first VOB file from my pc to the A3 and it
plays but it is all choppy, pixelized. I thought this player
supported playing of VOB files. Are there specific settings
I have to use when I prepare a VOB file?
Personally I've had no issues playing a DVD ripped using DVD Decrypter and then transferred to the device so not too sure what to advise.
I upgraded from the 1.11 firmware which came with the player
to the 1.15A. Used all default settings on Decryptor and it is
still the same for VOB. Choppy, pixelated. Playing the file on
the PC using jetAudio is fine.
Tried a different DVD and it played clean on that one, with the
exception of what looks like a dropped frame or two.
I will try a number of different ones before I come to a conclusion.
Will also note what is different on the files.
soccer2668
01-05-2008, 16:01
I ahve managed to get VOB to work quite easily. Not sure what the problem could be.
Maybe the OP is having a case of bad VOB's?
(ducks and runs)
I have tried at least 7 or 8 vobs ripped from my concert dvds, selecting
specific tracks using Decryptor ( IFO mode ) with all default settings.
Not picking any particular streams ( ac3,lpcm,dts...). Only 2 play
without any hiccups. The others chop like this. During that period,
I hit pause and snapped a picture of it for displaying here. Should
I be getting on the horn with B&H tomorrow to send this back?
I'm not happy, I could convert to avi and play them, but I could have
done that with my Zen Vision as well.
These files all play with a glitch on my pc using jetAudio or Nero,
am I doing something wrong?
http://i.pbase.com/o4/79/20779/1/91402194.reZTDLIc.cowon1.jpg
I just got my A3 this week . some or most vobs ripped i put in has choppy & out of sync only a few vob movie have no problem . I have a feeling it all depends on the movie- file .I have not update the firmware on the unit but I wonder if cowon has people thoroughly test out the so call playable "VOB "(VOB limited ).
And what are all the B:setting > skip interval , playspeed , which is a default no.?
Can anyone offer any advise or solution about this issue ? Thank you
So is this simply a case where the chip cant keep up or the player does not have the
horsepower? They play fine on the pc. I just want to know if I have a defective player
or not. I was on live chat with cowon today and they asked if they could get a copy
of the vob I had trouble with. I had no way to get it to them. Email has a 2 meg
limit. Vobs are huge. I sent him a movie clip from my digital camera and he said yes
"I see that it is choppy" but wanted the file to try out on their player. Guess everyone
must be happy to convert to other formats and not ccare about vob.
VOB files are MPEG2 files. They're usually large but not processor intensive unless the processor is really optimised for something else. If the processor
can handle MPEG2 and XVID/DIVX/H246 it should have the least performance issues with MPEG2/VOB. The issue could also be - HDD speed and HDD controller speed since file sizes are larger with VOB files.
As an illustration of this disable the Ultra DMA on your Quad Core Intel based PC's DVD drive controller and see how badly DVDs play back afterwards.
You could use MPEG Streamclip to edit the file down to about 2MB and mail that to Cowon support also try it first on your player.
http://www.squared5.com/svideo/mpeg-streamclip-win.html
do you own an A3?
do you have problems playing vobs?
do you own an A3?
do you have problems playing vobs?
Technically I own an A3 but in practice I hope to have it in my hands tomorrow - darn EMS is being slow. :) I'll let you know how VOBs
play on my unit prolly tomorrow.
hamstrman
01-08-2008, 18:06
I'm having the same problem with the choppiness of the VOB's on the player, but not on my computer. Has it been determined that the player just can't keep up with the VOB? If you convert it to an AVI, does this solve the problem?
AVI's are fine, although I have seen in some instances
where the vid seems to pause for a split second and
then goes on. I would expect completely smooth
playback in AVI format. That might be a glitch in the
encoder. I've used jetAudio's and AutoGk for avi so far.
I'll have to compare the two to see if one or the another is responsible.
Tried h264, but video on the A3 plays sloooow ( audio slow too ).
I posted in the stickey above with those settings,
hopefully we can get some help on that. Used
Nero recode but I must have some setting wrong.
Either that or the player isn't really ready for h264 yet
with the current firmware.
I'm hoping firmware can shake all these things out.
Well even when VOBs do play fine, there's no way of fast forwarding a VOB, nor can you resume one, you have to start at the beginning. You're best off converting to another format (it'll be smaller anyway).
hamstrman
01-09-2008, 16:54
Well even when VOBs do play fine, there's no way of fast forwarding a VOB, nor can you resume one, you have to start at the beginning. You're best off converting to another format (it'll be smaller anyway).
I don't know what to tell you, but I am capable on my A3 (and my computer) of fast forwarding the VOB I put on there... I was also able to resume it both on my A3 and my computer.
And in reference to the AutoGK program, I turned my VOB (which played fine on my computer) into an avi using AutoGK and not only did it take 9 hours to alter a 2 hour movie, but the sound and video were completely out of sync because the video was moving like molasses. Do you change the default settings?
I usually only take a track at a time from various concert dvd's
and convert.
autowidth, cbr mp3 192, Xvid ( under advanced settings )
target quality 75%
add job and start.
Just did one, 528 meg vob to avi 12 minutes on an
AMD X2 5600+, 3 gig ram, 500gig HD
resulting avi was 225meg
using jetAudio, COWON A3 Auto High Quality ( 192 kpbs Audio ),
528 down to 145 meg in 8 minutes. Although the size is smaller
and it is faster to convert, the volume of the audio hear using this
method is MUCH lower.
In the AutoGK method there is a step in the log where I see the Audio is "Normalized"
Not all, but some. The machine switches itself off with disturbing snapping sound.
Also, having problems fast-forwarding through VOBs as noted by an earlier poster.
Anyone else having these problems?
vorbix,
I have the same problem. Playing some vobs switches off the machine.
Hi pdm,
It's good to know it's not just me :)
I'm curious, where did you buy your A3? I got mine in Ireland - I'm wondering perhaps if there might be some problem with batches in Europe as opposed to the US.
Hi vorbix,
I bought it in Hong Kong. It was supposed to be shipped directly from Korea.
Hi pdm,
It's good to know it's not just me :)
I'm curious, where did you buy your A3? I got mine in Ireland - I'm wondering perhaps if there might be some problem with batches in Europe as opposed to the US.
Hi vorbix, another Irish user here! Regarding VOB's, I haven't noticed any problems with the player switching off abruptly, although I haven't been watching any VOB's for extended periods. I just checked to see that they were working ok, and left it at that. I'll do a longer test run when I get a chance and see what happens.
To the OP, I didn't see any choppiness or sync problems at all either. However I do have the problem where if I try to FF the file while playing, it goes back to the start. I assumed this was just something to do with how a VOB works without the IFO? Although I'm no expert in that area.
And in reference to the AutoGK program, I turned my VOB (which played fine on my computer) into an avi using AutoGK and not only did it take 9 hours to alter a 2 hour movie, but the sound and video were completely out of sync because the video was moving like molasses. Do you change the default settings?
A couple of examples from me:
1. I decrypted a 1hr35min DVD in 7min 30sec, using DVD Decrypter in IFO mode, resulting in a 5GB VOB. I then used AutoGK to convert that file to a 1.5GB AVI in 34mins. My AutoGK settings are Output size = 75%; Advanced options: Resolution = Fixed width 720; Audio = Original(AC3, etc); Codec = XviD.
2. I decrypted a 40min TV episode in 4mins, then converted to ~400MB AVI in about 15mins, using the same settings as above.
PC spec:
Intel Core 2 Duo E6750, running at 3.4GHz.
PC8500 RAM running at 1.1GHz.
75GB 10,00RPM Raptor for my main system drive.
In fairness, the PC is really suited to encoding tasks.
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