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Old Nov 28, 2009, 01:20 PM
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Daemon's Avatar
Lakewood, Colorado
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Quote:
Originally Posted by SoMoney View Post
I just ordered the Neuros MPEG-4 Recorder from Amazon for $60US
640x480 30fps (1hour per gig at 2048kbps)
2048kbps is not high enough bitrate for FPV at that res.

ian
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Old Nov 28, 2009, 06:13 PM
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Joined Sep 2009
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Is this of any use with the kx-191 pal camera set-up?



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Description:


Portable 3" MP4 Video Recorder TV AV in/out DVR Monitor

4GB Multiple Functions Media Video Player
1) 3.0 inch, 16:9 widescreen high-definition 400 x 240,16 Million Colour.

2)HD video recording (TV-IN), from TV, DVD Player, pinhole camera, CCTV surveillance camera, tape recorder admit 720*576(D1) HIGH quality image data. you could use it as portable monitor or DVR(digital video recorder).

3) High-definition video output (TV-Out) can connect watch network TV movies,photographs,graphics,the output resolution of 720*480,with the home DVD like clarity.

4) High definition video decorder: RM,RMVB,AVI,FLV,3GP,MP4,WAV,ASF,VOB,DAT,MPG, directly play DVD,VCD files, Resolution up to 1280*720

5) The build-in 1.3MP camera not only allows you to take memorable pictures, it also capable of video recording up to the size of your micro SD (TF) storage card. Picture:1600*960(max) High resolution video: 640*384/30fps(max), The image quality is really clear, ( if you need demo video,please contact to us then. )


6) Audio player: Support MP3,WMA,APE,FLAC and other audio formats, support synchronous lyrics display, play mode selection.

7) FM stereo radio: 87.5-108MHZ,support for manual / auto-units,FM recording, a maximum of 20 stations can be stored.

8) Electronic album: JPG format to support the browser 3D three-dimensional rotation,slide show,music,electronic photo album.memories ofthe good old days at all times.

9) EBook: listened look (pictures,e-boods), in support of bookmarks,automatic browsing,background music playback functions.

Memory expand : up to 16GB Micro SD card (Not included)


Model: JXD318 Mini Media Player
Display: 3.0", 400 x 240 TFT WQVGA 16:9 Screen 16 Million Colour
Size: 96.95*53*12.6mm
Colour: Black
Storage: 4GB, Micro SD (TF) slot for Additional up to 16GB
Physical Size: 95 x 53 x 12.6 mm, 96g, Metal Housing, Black Color
Audio MP3 / WMA / WAV / FLAC / APE / AAC Lyric display
Format: Mode Normal, Rock, Pop,Bourdon, Alt
Voice recording in AAC Format, 1GB Records up to 48 hours
Video RM/RMVB/AVI/FLV/3GP/MP4/WAV/ASF/VOB/DAT/MPG
AVI: Resolution up to 1280x720, RM:1280x720, 30 F/S
TV (PAL/NTSC) TV-In Recording 720x576 / TV-Out Support Resolution 720x480
Camera Build-in 1.3 MP Photo & Video Recording
Picture Support JPEG, Preview, Slideshow, Zoom & 3D Switch
Radio FM Tuner 87.5MHz - 108MHz
Functions: Wallpaper Original Background Pictures for Audio Play
E-Book Support Independent Bookmark, Auto or Timed Page Turnover
Games Build-in Games, Support Games Download
Desktop Time Display, Calendar & Clock
Battery: Build-in Lithium Battery, Audio Play ~ 12 hours, Video Play ~ 6 hours(earphone output)
O/S & Interface: Ms Windows 2000, XP & Vista
Hi-Speed USB 2.0, 4MB / Sec
Language: Chinese, English, Spanish, Japanese, Portuguese, Russian, French,Korean,German,Nederlands,Italian,Malay,Turk ish,Indonesian.
Others: Build-in Speakers & Microphone
Support Firmware Upgrade

Package included:

1 x JXD318 MP4 Camera
1 x Stereo Earphone
1 x Power adapter Charger
1 x USB cable
1 x TV cable
1 x User manual (Chinese and English)
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Old Nov 28, 2009, 09:50 PM
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San Diego
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606 Posts
JXD318 max resolution is 720x480.
Detailed Review at MP4Nation.
http://www.mp4nation.net/forum/viewt...p?f=17&t=13864

Doubt recording past 640x480 is even possible with a composite cable.
Also not clear if you can Record and View at the same time through goggles may require splitter.

Fpv easy glider (7 min 30 sec)

FOUND VIDEO FOOTAGE OF JXD318 in action.
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Last edited by SoMoney; Nov 29, 2009 at 12:43 AM. Reason: Added JXD318 Video link.
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Old Nov 28, 2009, 10:04 PM
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San Diego
Joined Nov 2002
606 Posts
Quote:
Originally Posted by Daemon View Post
2048kbps is not high enough bitrate for FPV at that res.

ian

Yea, I think that may be a mistake from Neuros but I just dont know enough about the settings it's MPEG-4 uses yet.

GSpot reports My $15 Gum Cam Records 640x480 30/fps at 7000kpbs.
GSpot reports My $40 V-Mate Records 640x480 20/fps at 4000kbps.
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Old Nov 28, 2009, 10:22 PM
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Lakewood, Colorado
Joined Aug 2002
28,635 Posts
Biggest problem with that recorder is that it appears to max out at 25fps
according to that review. That is not enough for high motion FPV.

As for recording at 720x480. It's the native resolution of DVD.
Analog video sources by definition, have no set number of horizontal pixels.
They have a set number of horizontal lines, but each line is showing a truly analog
signal so when you convert the analog signal to digital you can choose to split it up
into 320, 640 or 720 or any other number you want, horizontal pixels. If you can
capture 720 pixels then you're recording a little bit more information per line. The
problem is, computers generally render video with a 1 to 1 pixel aspect ratio and
while the input image be 4:3 aspect ratio, which matches 640x480 resolution,
when capturing at 720x480 and played with 1 to 1 pixel ratio produces a
horizontally stretched image.

The Aiptek MPVR+CB can choose between 720x480 and 640x480 as well.
What I found is that 720x480 appears to be its native resolution so
it looks best at that resolution, but when you rescale it to 640x480 in
post processing to fix the aspect ratio, it looks about the same as it would
captured directly at 640x480 so there's little gain from using the higher res.

If you look at these two high motion clips captured off a DVD player to
my Aiptek MPVR+CB a couple years ago you can see the difference.
(download originals to see raw capture asf files, and play with VLC player)
640x480@30fps
Action DVD clip (full-screen) - Aiptek MPVR+CB at 640x480@30fps (1 min 10 sec)

720x480@30fps
Action DVD clip (full-screen) - Aiptek MPVR+CB at 720x480@30fps (1 min 9 sec)


I chose a clip that would sort of simulate low flying FPV.
Some things to notice. The 640x480 capture ended up using about 3Mbit/s.
The 720x480 capture uses about 4Mbit/s and the original looks decent.
That said, any true recording of FPV flight, especially at low levels
or in less than perfectly still air, will require a lot higher bitrate than
either of these samples to look good.
TV shows and movies are obviously filmed with very stable camera platforms
and even "high motion" clips on TV are actually usually using a fixed
camera position with motion moving through it, minimal panning,
which allow for much higher quality at lower bitrates. That's why
many DVRs designed specifically for recording TV shows can get away
with low bitrates.

ian
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Old Nov 29, 2009, 12:06 AM
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San Diego
Joined Nov 2002
606 Posts
Can Aiptek record through Video-IN and play through Video-OUT real time for goggle use?
Or does it require a video splitter if you intend to use goggles?

Some of these newer video glasses (EVG920E confirmed) will blue screen and cycle for 2-5seconds (PAL,SECAM,NTSC) when video is interrupted. I need something in between outputting an NTSC or PAL signal 100% of the time so it stops doing that.
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Old Nov 29, 2009, 12:19 AM
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Lakewood, Colorado
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Yes it has a separate A/V output and I believe others have
confirmed that it'll output a time base corrected signal even if the input goes to static.
The problem is, like most recorders that have an A/V output the
video quality is not as good as the original and it includes various clutter
on the screen telling you record time and so forth.

Note that not all recorders that have a live A/V out while recording
do time base correction. Some pass the signal through pretty much
unmollested (except for the recording time overlay) and your
goggles or LCD TV still won't be happy. It's best just to choose displays
that don't do that, unless you want to invest in a standalone time base corrector,
which are generally not cheap.

ian
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Old Nov 30, 2009, 07:42 AM
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Malaysia
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Quote:
Originally Posted by SoMoney View Post
Thanks Plesk!
Please detail how you are using this device and any pointers/instruction you might have to get it recording as simply as possible.

Video Quality:
The Camera looks a bit fuzzy and the video encode has noticeable vertical interlacing. Please tell me thats your encoder and YouTube do that.

What did you use to encode the video before you put it onto youtube? If you have Windows, give Movie Maker a try!
Save As: Windows Media DVD Quality (3.0Mbps) before you upload it to YouTube.
Hi SoMoney,

Yes the video quality is low due of kx171. I use the Movie Maker and save as *.wmv. Yup the horizontal lines coz of reception issue as Pheonixflyer say.

For using this device I use the remote all the time. Press "TV" to access the AV source but first I have to make sure the device source and the AV source are same. Then press "REC" and choose the recording quality and the recording start. Lastly press "STOP" to end.
My GSC LCD screen directly connect to this device while goggle connect to video splitter.
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Last edited by plesk; Nov 30, 2009 at 07:51 AM.
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Old Nov 30, 2009, 06:41 PM
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Melbourne, Australia
Joined Jan 2008
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Question for Daemon.

Hi Daemon, what is your opionion of this recorder
http://cgi.ebay.com.au/2-5-HDD-AV-Vi...item4a9ca97b31

as compared to the older model (BR3002 DVR I think you called it) and the CS-T60C?

I have a BR3002 DVR recording in PAL mode from a SN777 and I'm looking for something that will record in slightly higher quality. I was thinking that a higher resolution would help to achieve that but I read your post #50 and now I'm confused as to weather its worth it.

What do you use (if anything) that records at 30fps?

Do you record in NTSC sacrificing quality for framerate?

Thanks Geoff
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Old Nov 30, 2009, 07:06 PM
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Lakewood, Colorado
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Everything I use records at 30fps. I wouldn't use anything that didn't
as I feel it is the minimum for high motion.
I use NTSC because all video equipment in the US is NTSC.
Having not used that recorder, I can only say that the fact that it
has no buttons on it to start/stop recording would be very annoying to me.
I can't speak to its recording quality.
One of the features I like the most about the BR3002 is that it has
dedicated buttons to start and stop recorder so I can literally operate
it without looking and always know exactly what it's doing.

ian
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Old Nov 30, 2009, 07:48 PM
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Ireland
Joined Apr 2001
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i ordered that one form those guys

hi
i ordered that one to see if it meets my requirements.
For now i would hold off buying it since they did not suply me with a tracking number that shows up on the hk post or local irish post website.
This does not mean it has not been send out but il have to wait and see.
Once (if) I recieve it il update

[QUOTE=garris2;13707541]Question for Daemon.

Hi Daemon, what is your opionion of this recorder
http://cgi.ebay.com.au/2-5-HDD-AV-Vi...item4a9ca97b31
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Old Nov 30, 2009, 09:22 PM
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Thanks for the reply Daemon, you've just pointed out something that is so obvious that I didn't even notice it. I had assumed the r9ound silver button in the middle duobled as the record button but in all likelyhood it does nothing else except power. Bugger.

Is there anything that records in the higher resolution of PAL and at 30fps at the same time?

Geoff
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Old Nov 30, 2009, 09:32 PM
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Lakewood, Colorado
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It doesn't exist. There is no version of PAL with 625 lines running at greater than 25fps.
See the wiki articles on PAL and NTSC to see the differences.

ian
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Old Dec 01, 2009, 06:44 AM
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San Diego
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updated 1st post with:

eBay 720x480 KeyChain Cameras
Video Codec: Motion JPEG (720x480, 30/fps, 10263kbps)
Audio Codec: PCM Audio 2050Hz 353 kb/s (1 chnl)

These KeyChain cameras are an EXCELLENT choice for easy mounting/taping onto your plan, helli, or park Flyer!
They Support 1-8g Micro SD chips and can record your entire flight in glorious 720x480 @30fps!
The benefits of having one of these in aadition to your existing Video TX is you will have static free recording of your flight.
As some of us have discovered, if you loose signal, these also also make great crash videos.
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Old Dec 01, 2009, 11:30 AM
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shawnee, ks
Joined Apr 2004
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Quote:
Originally Posted by SoMoney View Post
updated 1st post with:

eBay 720x480 KeyChain Cameras
Video Codec: Motion JPEG (720x480, 30/fps, 10263kbps)
Audio Codec: PCM Audio 2050Hz 353 kb/s (1 chnl)

These KeyChain cameras are an EXCELLENT choice for easy mounting/taping onto your plan, helli, or park Flyer!
They Support 1-8g Micro SD chips and can record your entire flight in glorious 720x480 @30fps!
The benefits of having one of these in aadition to your existing Video TX is you will have static free recording of your flight.
As some of us have discovered, if you loose signal, these also also make great crash videos.
provided you find your plane after you loose video.....
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