LiteOn LVM-5005 Macrovision workaround for newer models

vbimport

#1

My machine: LiteOn LVM-5005 bought at Costco in the U.S.; manufactured Nov 2004; System LNFA1091.ESU, Drive LNFA1000.E30 (latest upgrade as of December 13, 2004).

I have discovered a trivial workaround for the inability of later-made LVM-5005 machines to record a macrovision (MV)-encoded signal. :cool:

  1. On the LVM-5005, start recording from a source that does not contain MV. A blue screen or the splash screen of your DVD player will work fine.

  2. Just after the recording has started, press (pause).

  3. Start the source that contains MV. For a DVD movie, this would mean loading a disc, navigating through the menu and and starting the movie. For a VHS tape, this would mean starting it playing. (A paused source that has MV will not work, as even the still frame contains MV within its vertical blanking interval.)

  4. Press (pause) again to resume recording.

From my preliminary experiments, this seems to work just fine. :slight_smile: The recording can be paused and resumed multiple times this way. What seems to trigger recognition of the MV signal, and stoppage of the recording, is if the source is interrupted in a way that alters the vertical sync. For example, complete stoppage of an MV-encoded source (e.g. full stop of a VHS tape) followed by playing (but without pausing the recording process) will cause the recorder to stop recording. My guess is that the machine disables the MV detection once a clean, non-MV vertical blanking interval has been detected, and somehow pausing the recording does not reactivate it. (Perhaps this helps reduce ‘false’ detection of MV?) Unfortunately this means that if your MV source has any vertical sync errors (e.g. a frame jump) the recorder will recognize MV and stop. So for VHS tapes, make sure the tracking is adjusted as good as possible.

An interesting use of this workaround might be to create a still image, such as a still frame from a movie, that can be recorded to a CD-R and played from a source machine when the recording is started. This image will then be the first second of the recording, and will also be the image displayed in the thumbnail of the menu.

I have only tried this trick using the RCA video in on the back of the machine, but I can think of no reason why this would not work with the S-video connection. Similarly, the choice of blank media should make no difference, although I have tried only DVD-R and DVD+R.

Anyone who has tried this workaround and has been successful, please post your experience to this thread; I am interested in how universal this trick may be.

Have fun!
WormGuy


#2

If you watch the Lite-On “display” on your tv, you will see the pause icon replaced by the circle with a line through it for a very short period just as the movie starts, I suspect this is the time the “no-record” signal is being sent. For example on the X-Men dvd the THX sound display records nicely but the dvd recorder will kick out as soon as the movie starts. If you are pausing at the time you can see the “No-record” symbol display for a second or two then go back to the pause button display which means its safe to record again. This method will work until they decide to put the signal througout the movies at various times.

On the other hand, I found the SIMA video enhancer I purchased to improve the video quality of my old 8mm video screen via camcorder transfers also totally eliminates the macrovison on pre-recorded dvds. I have never tried an entire movie, as I have no need to make copies, nor desire to have copies without dolby digital sound, but it appears to work for the few minutes I tried it - much like the “pausing” method appears to work, but I have never actually recorded an entire movie to make sure it really does work.

BTW: I have my system setup as region free, not sure if that affects any of this


#3

No it is not working for me.
Going to try this one Copy & Capture Protected VHS and DVD


#4

dont´t work more than a few secs for me but i did try it with rca and s-video and scart but it fail after 30sec recording from vhs to dvd


#5

Why bother, all versions of firmware are now hackable using instructions on main 5005 thread for both PAL and NTSC users