DVD Recorder models - Picture Quality and Features Analysis

gshelley61 · Frequent Flyer Joined: 19 May 2004 Location: USA

Here's how the Pioneer DVR-320 does recording with the DV input (I used a Pioneer DVR-520H as the source player, DV out)... definitely much sharper and more detailed than the 531/533. I would expect the DVR-520H to perform the same way, since it is basically a 320 with a hard drive.

I do see a bit of faint edge ghosting in the "Sid" frame. I've seen this before with Pioneer 10 and 20 series recorders. Not a big deal, but the LSI encoder chip based machines (JVC, Lite-On) do not have this artifact.

donpedro · member bember Joined: 05 Aug 2002 Location: EU

trhouse · Member Joined: 28 Aug 2003

Those 320 captures from DV look much more like one would expect from a DV input.

Here is an oddity discovered this weekend. I have the 531 set up to record daily, but it skipped the weekend and shows the timer set to record Monday. Looks like "daily" means weekdays. It must assume most people are recording daily TV which unfortunately I am not.

donpedro,

I have had this unit a short time, but I think I see what you are saying. Any time the recorder does a recording "realtime" it is either encoding or re-encoding. Is this correct?

[edit] the manuals must be different, page 71 is about "Title Name", "Erase Section", and "Move" functions for the 531.

donpedro · member bember Joined: 05 Aug 2002 Location: EU

trhouse · Member Joined: 28 Aug 2003

I found similar information to what you described in your earlier post. It describes when it does a "high speed" copy vs "realtime" but there is no reference that "realtime" means encoding, but we now know it does. What it does specifically mention is realtime being used for preserving frame accurate edits and chapters.

Unfortunately, all that aside, it will not do what I was trying to accomplish which was to do some trimming without re-encode and without having to go back to the computer.

I do like the editing features of the 531 and the multiple menu choices so it would have been very convenient.

kenw · Member Joined: 14 Sep 2005 Location: Miami, FL, US

I'm looking into getting one of these models but have a couple quick questions. I've used search to look for the answers already but have not found them.

1. Are there any required firmware updates I will need to do?

2. Is it possible with this player to get around any future problems with the broadcast flag I've been trying to read about?

Thanks in advance.

Frobozz · Member Joined: 23 Dec 2003 Location: Eugene, Oregon

trhouse · Member Joined: 28 Aug 2003

I do not need frame accurate editing so video mode was used. The re-encode occurs going from dvd-r to the hard drive. At this point no editing has occurred. I have looked into whether other hard drive recorders can do it, but it looks like this is not unique to Pioneer. As you suggest, I would not worry too much about it.

trhouse · Member Joined: 28 Aug 2003

After seeing the capture abilities of so many dvd recorders, I decided to go back and have a look at one of the very first capture devices I owned. This is an old Adaptec AVC-2200 USB2 capture device. I used Movie Mill software for capturing to the computer.

For these tests, Movie Mill was set to capture at a 720 by 480 resolution, VBR with a peak bit rate of 7.5 MBs, and all input video filters turned off. I used the Pioneer DVR-531H as the S-video source.

AVC2200 contrast

AVC2200 black level

AVC2200 color bar

AVC2200 test clip

It does surprising well for what I recall is a Conexant 8 bit chip. I may hang onto this little box after all just to provide an alternative to the recorders.

gshelley61 · Frequent Flyer Joined: 19 May 2004 Location: USA

Here's some captures made with the Sony RDR-HX900. It's a very well built (and heavy) machine with a 160GB hard drive. It has the HQ+ (15 Mbps) recording feature, with re-encoding to the recording mode of your choice. It also is one of the only recorders that has a component video input (480i only). It is set up to handle 7.5 IRE sources by default through the composite and s-video inputs, and 0 IRE sources through the component video input. It also has a IEEE 1394 DV input.

I used my DVR-520H as the source player for DV, s-video and component outputs.

The results of these tests are very good (they should be considering how expensive this unit is!)

Sony RDR-HX900, DV input, SP mode:

Sony RDR-HX900, DV input, SP mode:

Sony RDR-HX900, s-video input, SP mode:

Sony RDR-HX900, component video input, SP mode:

Here's how the unit does recrding at 15Mbps (HQ+ mode) to the hard drive, then re-encoding to SP mode to disc... Sony's adaptation of two-pass encoding:

Sony RDR-HX900, DV input, HQ+ to SP mode:

Sony RDR-HX900, DV input, HQ+ to SP mode:

Just for reference, heres the same two frames captured with the JVC DR-M10 via the DV input, SP mode...

JVC DR-M10, DV input, SP mode:

JVC DR-M10, DV input, SP mode:

And here are the original THX test disc frames...

THX test disc, multi-purpose pattern:

THX test disc, Ice Age clip, "Sid":

It appears to me that the JVC still does a better job with DV to DVD conversion than the Sony. The Sony SP encodes have artifacts around some of the edges. The JVC encode looks closer to the original, with very few artifacts. However, the Sony HQ+ to SP "two-pass" encodes look real good. I'll have to do some high motion sequence testing using that method to see how they turn out.

DVWannaB · Member Joined: 30 Dec 2001 Location: United States

Gshelly61,

anything new to report with high motion scenes (XP+, XP, SP etc.) on the Sony HX900, as you promised? Thinking of picking one up. Thanks.

gshelley61 · Frequent Flyer Joined: 19 May 2004 Location: USA

DVWannaB · Member Joined: 30 Dec 2001 Location: United States

Thanks. I am intersted in the HX715 to go with my new HDTV sometime during the x-mas / early new year.

trhouse · Member Joined: 28 Aug 2003

Here are some photos inside the Pioneer DVR-420.

The hard drive

The tuner

The dvd drive

The power supply

Underneath the hard drive

The encoder chip. Anyone recognize it? The numbers are line 1) M65673WG, line 2) 41109. The logo is followed by capital TS.

The heatsink for the encoder chip. The little square on the shiny metal heat sink is a thermal pad similar to that used in JVC M10's.

Rear panel

MJA · Member Joined: 05 Jan 2005 Location: IL

do u think adding Thermal paste like Arctic Silver 5 to the heatsink will help?

http://www.newegg.com/Product/Product.asp?Item=N82E16835100007

BrainStorm69 · Tobor Joined: 05 Aug 2002 Location: Texas, USA

trhouse · Member Joined: 28 Aug 2003

This information was found on a Japanese language site,

with this block diagram,

[edit]

MJA,

I think a larger thermal pad would help. The one used is pretty small compared to the size of the chip, but there are no reported problems with these units involving heat.

trhouse · Member Joined: 28 Aug 2003

I managed to get a Sony RDR GX315 for some testing. Here are some photos first.

Front

Rear

Top

Encoder board. The Cirrus chips do not have heatsinks and there are no vent holes on that side of the box. They are hot. The top chip CS98202-CMZ measures 57 degrees C. ( not comfortable to touch ), the CS92686-CMZ measures 49 degrees C.

The dvd drive, designed by Toshiba Samsung,

The power supply. I measured the temperatures on the heatsinks going left to right, then up. The temperatures were 43, 44, 40, 39, and 63 degrees C. The power supply has the fan blowing accross it but it is cooler than the encoder.

Video tests coming.

gshelley61 · Frequent Flyer Joined: 19 May 2004 Location: USA

The inside looks about like a Lite-On in terms of layout and build quality. Note the light duty plastic case DVD burner - it looks very similar to the drives used in Lite-On units. I read somewhere that the Sony 315 is actually a re-branded Chinese made Samsung machine... although I don't know for sure.

trhouse · Member Joined: 28 Aug 2003

After I read your comment, I called a friend who bought an OEM Samsung dvd drive. He confirmed it has the same kind of label indicating it is designed by Toshiba Samsung. I looked the unit over a bit more and discovered the tuner is also Samsung. Looks like the encoder board might be made by TDK.

trhouse · Member Joined: 28 Aug 2003

These tests were done as follows,

Test patterns: THX file from "ICE AGE" video.
Source player: Panasonic S35 dvd player
RDR GX315 connections and settings: The S-35 composite output was sent to the GX315 L1 composite input with video default settings.

The GX315 has output playback black level adjustment but no input adjustment.

Note: This post has been updated. The original post had the Panasonic S35 output IRE set to 7.5. The images produced looked too light. The current images below were retaken with the S35 output IRE set to 0. The black level tests show captures with the source set for both IRE=0 and 7.5 for reference.

GX315 contrast HQ mode ( equivalent to XP )

GX315 contrast SP mode

GX315 contrast LP mode ( LP mode has been resized to 720 by 480 )

GX315 black level HQ mode, IRE=0

GX315 black level HQ mode, IRE=7.5

GX315 black level SP mode, IRE=0

GX315 black level SP mode, IRE=7.5

GX315 black level LP mode, IRE=0 ( LP mode has been resized to 720 by 480 )

GX315 black level LP mode, IRE=7.5 ( LP mode has been resized to 720 by 480 )

GX315 multipurpose test pattern HQ mode

GX315 multipurpose test pattern SP mode

GX315 multipurpose test pattern LP mode ( LP mode has been resized to 720 by 480 )

GX315 ICE AGE test clip HQ mode

GX315 ICE AGE test clip SP mode

GX315 ICE AGE test clip LP mode ( LP mode has been resized to 720 by 480 )

A few problems were encountered doing these tests. The GX315 does not like dvd-rw's that have been formatted by the computer. It would not accept such a disk and would eject it with the message "The disc can be neither played nor recorded". The disk would work if it is first formatted on the Panasonic ES10 in video mode. The Sony will still display the above message but this time it will not eject it. It can then be formatted on the Sony.

Also noticed that there are some strange blank areas at the top and sides of the captures. They are visible in playback in PowerDVD as well as VirtualDubMod. At first it was attributed to using a Panasonic ES30V for playback but then I switched to the S35 with the same result. These are most noticeable in the images of the cartoon characters.

The Sony does not have flexible record modes or chasing playback.

trhouse · Member Joined: 28 Aug 2003

Photos of the Panasonic DMR-ES35V

Front panel. Changes from the ES30V include, no door for IN2 and a door for the DV input on the right. The ES30V did not have the "Drive" button so it had duplicated controls for the VCR and DVD.

Rear panel. Almost identical to the ES30V but the fan is larger with more cutouts for airflow.

Top view inside. The dvd drive is not just bolted in position. It is suspended in a cradle with shock mounts. The sheet metal for the cradle is sharp. I found out by getting cut.

The encoder is underneath the the dvd drive. The heatsink is firmly held down with a spring clip against a thermal pad which is sandwiched between the encoder and the heatsink.

Back side of the encoder board.

Is the encoder LSI? It is not. It runs hot like the LSI but the name on it is Panasonic. p/n MN2DS0015DB, next line is 548A7006. It also has the Dolby, DTS symbols and the word Firewire on the chip. If other posts are correct only the DMR-ES20 and ES40V have and LSI processor.

trhouse · Member Joined: 28 Aug 2003

Panasonic DMR ES35V tests.

Source media: ICE AGE dvd
Source player: Panasonic DMR ES30V with s-video to ES35V IN1

Images are updated with ES30V mpeg DNR off and ES35V line in NR off

ES35V contrast XP mode

ES35V contrast SP mode

ES35V contrast LP mode ( still full D1, 720 by 480 )

ES35V black level XP mode

ES35V black level SP mode

ES35V black level LP mode

ES35V XP mode multipurpose test pattern

ES35V SP mode multipurpose test pattern

ES35V LP mode multipurpose test pattern

ES35V ICE AGE test clip XP mode

ES35V ICE AGE test clip SP mode

ES35V ICE AGE test clip LP mode

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gshelley61 · Frequent Flyer Joined: 19 May 2004 Location: USA

If the ES35 encodes at 720x480, it must be a new Panasonic chip (or maybe a re-branded LSI chip?).

It looks like the ES35's Line-In NR (and/or the ES30's playback MPEG DNR) was left on for those caps, too.