Overview Had a problem with a "bad" frame occurring very shortly after if not exactly after a scene change. The frame would be shifted slightly and have discoloured band or such on the left side of the frame.
Solution
Turn off the vcr's TBC.
FFmpeg - fixing video duration
Overview Had a capture going with Vegas where the capture crashed near the end. The capture program ( vidcap ) did dump a avi file but the avi file's duration or length was only 50 seconds instead of 35 minutes. Vegas will not load the whole file, just the first 50 seconds!
Solution
Rewrote the video file using ffmpeg...this also fixed the duration.
Here's the script:
setlocal
SET ffmpegpath=%APPDATA%\myFFmpeg
SET PATH=%PATH%;%ffmpegpath%
ffmpeg -i "u:\04 - Lord Howe Island\CaptureTemp_0000.avi" -c:v copy -c:a copy "good0.avi" -f null 1>out_error3.txt 2>out_error4.txt -
Vegas Not Loading Audio with the Video
Overview Scanned in a U-Matic tape using Blackmagic Media Express. This created a AVI file with a UYVY codec and PCM 24bit codec for audio.
Sample:
General
Complete name : R:\Business RAW\U-matic\2016\16-04-20 Pereria Umatic tape\tape 02.avi
Format : AVI
Format/Info : Audio Video Interleave
Format profile : OpenDML
File size : 4.12 GiB
Duration : 3mn 26s
Overall bit rate : 171 Mbps
Video
ID : 0
Format : YUV
Codec ID : UYVY
Codec ID/Info : Uncompressed 16bpp. YUV 4:2:2 (Y sample at every pixel, U and V sampled at every second pixel horizontally on each line). A macropixel contains 2 pixels in 1 u_int32.
Duration : 3mn 26s
Bit rate : 168 Mbps
Width : 720 pixels
Height : 486 pixels
Display aspect ratio : 3:2
Frame rate : 29.970 fps
Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:2
Compression mode : Lossless
Bits/(Pixel*Frame) : 16.000
Stream size : 4.03 GiB (98%)
Audio
ID : 1
Format : PCM
Format settings, Endianness : Little
Format settings, Sign : Signed
Codec ID : 00001000-0000-0100-8000-00AA00389B71
Duration : 3mn 26s
Bit rate mode : Constant
Bit rate : 2 304 Kbps
Channel(s) : 2 channels
Sampling rate : 48.0 KHz
Bit depth : 24 bits
Stream size : 56.7 MiB (1%)
Alignment : Aligned on interleaves
Interleave, duration : 1033 ms (30.94 video frames)
GeneralComplete name : R:\Business RAW\U-matic\2016\16-04-20 Pereria Umatic tape\tape 02.aviFormat : AVIFormat/Info : Audio Video InterleaveFormat profile : OpenDMLFile size : 4.12 GiBDuration : 3mn 26sOverall bit rate : 171 Mbps VideoID : 0Format : YUVCodec ID : UYVYCodec ID/Info : Uncompressed 16bpp. YUV 4:2:2 (Y sample at every pixel, U and V sampled at every second pixel horizontally on each line). A macropixel contains 2 pixels in 1 u_int32.Duration : 3mn 26sBit rate : 168 MbpsWidth : 720 pixelsHeight : 486 pixelsDisplay aspect ratio : 3:2Frame rate : 29.970 fpsStandard : NTSCColor space : YUVChroma subsampling : 4:2:2Compression mode : LosslessBits/(Pixel*Frame) : 16.000Stream size : 4.03 GiB (98%) AudioID : 1Format : PCMFormat settings, Endianness : LittleFormat settings, Sign : SignedCodec ID : 00001000-0000-0100-8000-00AA00389B71Duration : 3mn 26sBit rate mode : ConstantBit rate : 2 304 KbpsChannel(s) : 2 channelsSampling rate : 48.0 KHzBit depth : 24 bitsStream size : 56.7 MiB (1%)Alignment : Aligned on interleavesInterleave, duration : 1033 ms (30.94 video frames)
Problem:
When the AVI file is dropped onto the Vegas timeline there is no audio track.
Solution:
Use myFFmpeg to transfer the video and convert the audio to 16 bit PCM.
How:
Open up myFFmpeg and drop the file(s) onto the window.
Use the preset "AVI pass thru, PCM 16 bit" (on Apollo2).
DV Tape Capture - DV or FFV1
Overview When capturing archival videos we are using the FFV1 codec. Virtualdub is being used to capture directly into FFV1 within a AVI container. Then we are using myffmpeg to convert these files into FFV1.3 codec in a MKV container. It must be done in 2 steps as Virtualdub cannot capture directly into the final format..
Summary
We've set up a DV-NTSC shortcut on the desktops that opens up Virtualdub with settings to read the DV tape directly via firewire ( IEEE 1394 ). One can also use Vegas to capture the DV tape. The biggest difference between the two capture programs is that Vegas captures the camera/scene settings such as "white balance" etc. It also appears that Vegas capture up to 48Hz and Virtualdub may only capture 32KHz.
Prefer Vegas capture for miniDV etc.
Details
Contacted Peter Bubestinger-Steindl <p.bubestinger@das-werkstatt.com> and here was his response:
About your question regarding DV:
The DVA-Profession preset for Virtualdub is for capturing DV over Firewire. I've ran tests to confirm that this method is able to capture the original DV-bitstream as-is from the tape.
That is the way we transfer most of our DV collection.
In some cases, where the data on the tapes is in a very bad condition, we sometimes fall back to capturing the SDI output of the DV deck, and then transcoding that into FFV1.
Both methods have their pros and cons.
Method 1: DV over Firewire
=====================
+) Capture original stream as-is. Including bitstream errors.
This allows full access to the original data, and gives the most options for later restoration.
+) Smaller files than with FFV1, due to the fixed DV bandwidth of
approx. 270 MB/Min.
+) If more than 2 audio channels are used, all of them are preserved
since Virtualdub currently only allows capturing the first 2 channels from SDI.
+) If 32kHz / 12bit(non-linear) audio was used for the recording, the
interpolation to 16bits linear is done on the fly by Virtualdub and saved as the main audio track in the AVI.
If at any later point in time, one wants to access the original 12bit stream, it is still available inside the original DV video track.
+) AVPreserve's "DVAnalyzer" tool can be used to do QC on the ingest
material.
No need for visual QC. This saves a lot of time, and has a better result rate than visual QC.
-) Mid-stream changes of e.g. Samplerate, or "undefined-tape" gaps between recordings however, do cause problems with transcoding later on.
Depending on the application(s) used for handling the files afterwards.
Method 2: Capture SDI output
=====================
+) All errors on the tapes are being handled in real-time by the
error-concealment mechanisms of the replayer. The resulting video (transcoded to FFV1) is then stabilized and any further editing/transcoding behaves correctly.
+) Mid-stream changes of audio samplerate, gaps on the tape, etc. are
"manifested" since they are converted to fixed samplerate and "real"
images on the output.
-) Depending on the error-handling/error-concealment mechanisms built-in the replayer, the resulting image might look okay, but there is no way for re-doing any better restoration later on, since the error parts are
- literally - concealed.
-) Slightly larger files than the original DV stream.
When there's time, I'm going to add this to our "Video Archiving FAQs"
[1] section, where I mention DV..
Kind regards,
Peter
== References:
[1]
Blackmagic Studio Card Testing Results
Overview We purchased the BM Studio 4K to ingest videos. The card worked great. When setting up the second rack of equipment we decide to save some money as we didn't need the 4K features and the Studio 2 looked like it would do the job as all of our captures were analogue or low end digital. The Studio 2 had some issues in our flow.
Studio 2 Issues
When testing we found that captures using the Studio 2 contained black frames "randomly" throughout the capture. The same tape captured using the Studio 4K worked fine. We used ffmpeg's blackframe option to test the files. One file had over 400 black frames and the same file had 4 using the 4K. During our testing we would replace the capture card, driver, and software in Rack#2 so that no other hardware was suspect.
I talked to Peter B for the Austrian archive and he mentioned that he recalled issues like that with the Studio 2 card.
The conclusion was that both Studio cards are designed for the broadcast field and both expect reasonably clean signals. If the signal drops below the tolerance level then the frame if made black! Obviously, Studio 2 has much lower tolerance than Studio 4K.
Solution
We bought a Blackmagic mini Analogue to SDI converter. In Rack#2 we feed the component from the TBC into the A/D convertor along with the audio. The A/D converter outputs the clean signal to the Studio 2 SDI input.
Nikon 5000 Film and Slide Scanner - not working on Apollo2
Overview It appears that the Nikon film scanner is no longer working properly on Apollo2 (new Dell with Win10).
Problem
Slide scanning works fine. Scanning negatives works fine IF you do not use ICE! If you scan negatives normally (with ICE) you get an scanner error pop up after the first negative of the strip is scanned. If you check the log is says:
ERROR: Acquisition Failure.
The image was not saved.
Occasionally, the first negative will scan and it will error out on the next negative.
After doing some research online it appears that the driver is having a problem with PC's that have a fast CPU and etc. I thought it maight be an issue with a damaged (outer shell was a bit broken) USB cable....but I tested with a new cable and it still had the same problem.
Solution
We know that it worked fine with Win7 and Apollo (old PC). So, for now we've moved the scanner to Flag which is still running on WinXP.
ERROR: Acquisition Failure.The image was not saved.
File Sharing With Customers
Overview Our goal is to efficiently send files to customers. The challenge has been to send these large files in a timely manner.
We upgraded our internet from Shaw's 5/50 to Telus' 20/100Mbps in order to send files faster to our customers.
We tried sending a 1GB file using DropBox and Paul's LicketyLink (Amazon backend) and they both show speeds of about 1.4Mbps. Google Drive showed about 17Mbps. When I checked the route trace it show 3 hops for Drive and about 13 or 14 for the other two.
Now we have a Synology NAS set up and we just tried the file sharing using a 1.56GB video file.
Hans had some trouble with Chrome and Edge hanging and got it to work with Firefox....took more than 1 hour. Han's download speed with Shaw is 7Mbps. Assuming 1 hour for Hans...his speed was less than 3.5Mpbs (and this was during a busy internet time...afternoon).
Doug also tried the same file and downloaded it in about 15 minutes using Chrome. Doug has Telus and 25Mbps download. Assuming 15 minutes, Doug's speed was about 14Mbps.
Conclusion
We will now start using the NAS file sharing capability to send files to our customers.
How
Log into the NAS. Browse to the file you want to share on U or R. Right click the file and select the share option at the bottom of the list. Place a password on the file, leave the default of valid for 1 week, and capture the link. Past the link into an email to the customer.
Print DVD or CD
Overview Using the Epson Print CD program to print on watershield discs I've noticed that a number of times the pictures have a green tint to them.
Setup
Xavier has the printer directly connected to it. Apollo2 goes through the network to print to Xavier.
Tried
1) Tried printing from Apollo2 and no matter what I change the green tint remains.
2) Tried printing directly from Xavier and there I could change the tint to acceptable.
Solution - What Worked
On Xavier I printed the DVD watershield surface and it looked better. Here's what I did:
1) Opened the Epson Print CD program and loaded the background image that I wanted to print.
2) Select the Print button.
3) Print window should have: Media Type: CD/DVD; Print Color Correction: +1
4) Click the "Manual Print" button / printer properties / shortcuts tab
5) Select custom printing preset: "DVD minus green tint"
To Setup Custom Color Control
1) Click the "Manual Print" button / printer properties / advanced tab
a) settings should be "color controls" and "Epson vivid"
b) click the "settings" button and make sure settings are (or something similar):
saturation: +7
cyan: -13; magneta: +11; yellow: +2
c) save as "custom settings"
exFAT formatting
exFAT format of harddrive and flashdrive allows both MAC and Windows OS's to read and write to the drive. NOTE: Mac has trouble with exFAT if the cluster size is greater than 1024!!
Installing Nikon Scan 4.0.3 in Windows 10 Pro 64bit
Managed to install the Nikon driver and software into Win10 using the following article: http://blog.controlspace.org/2010/05/nikon-scan-on-windows-7-and-vista-64.html
Here it is:
Last Updated 8/23/2015 (adds mention of Windows 8 & 10 support)
There are various instructions around the internet that describe how to get Nikon Scan working on a 64-bit system. My instructions are slightly different and use only modified installation files from Nikon (nothing from Vuescan is used). Before I list the instructions, this will only work with and has only been tested with the following devices and operating systems:
- Devices
- Nikon Coolscan IV ED
- Nikon Coolscan V ED
- Nikon Super Coolscan 5000 ED
- 64-bit versions of Windows Vista, Windows 7, Windows 8, and Windows 10
Here are the instructions to get this setup working:
- The driver included with Nikon Scan is an older 'unsigned' driver. Newer versions of Windows will only allow you to install 'signed' drivers but there is an option to enable installation of 'unsigned' drivers. Before you can install the Nikon scanner driver as detailed in the next steps, you will need to look for instructions specific to your operating system version for how to enable installation of 'unsigned' drivers. After you have done this, proceed to the next step.
- Install Nikon Scan 4.0.3 Vista 32-bit software. This was the last version of Nikon Scan that Nikon released before they ended support for the software. Windows will probably want to reboot after this step.
- At this point the scanner will not work so you will have to update the driver for the scanner with a modified version of Nikon's Setup Information File (.INF file) that works on 64-bit systems. Create the file 'NikonUSBScanner.inf' with the contents shown below and save it somewhere like C:\Temp\Nikon (or just download NikonUSBScanner.inf):
; NikonUSBScanner.INF -- Windows Still Image Setup File of ; Nikon USB Scanners for Windows Vista/7/8/10 64-bit ; Manufacturer: Original by Nikon, Modifications for 64-bit by Chris Rawlings[Version] Signature="$CHICAGO$" Class=Image ClassGUID={6bdd1fc6-810f-11d0-bec7-08002be2092f} Provider=%ProviderStr% DriverVer=08/22/2009,1.0
;[ControlFlags] ;ExcludeFromSelect=*
[Manufacturer] %Mfg%=DeviceModels,ntamd64
[DeviceModels.ntamd64] %DeviceDescLS0040%=USBScanner,USB\VID_04B0&PID_4000 %DeviceDescLS0050%=USBScanner,USB\VID_04B0&PID_4001 %DeviceDescLS5000%=USBScanner,USB\VID_04B0&PID_4002
;///// USBSCANInstallSection ///// ;** Windows Vista/7/8/10 section ** [USBScanner.ntamd64] Include=sti.inf Needs=STI.USBSection SubClass=StillImage DeviceType=1 DeviceSubType=0x4000 Capabilities=0 AddReg=NKUSBSCN.AddReg CopyFiles=NKUSBSCN.CopyUSDFiles
[USBScanner.ntamd64.Services] Include=sti.inf Needs=STI.USBSection.Services
[NKUSBSCN.AddReg] HKR,,HardwareConfig,1,4 HKR,,DevLoader,,*NTKERN HKR,,NTMPDriver,,usbscan.sys HKR,DeviceData,ICMProfile,1,0,0 HKR,,USDClass,,"{07C71AC0-FA90-11d3-B409-00C04F87578E}" HKCR,CLSID\{07C71AC0-FA90-11d3-B409-00C04F87578E},,,"Nikon STI USD" HKCR,CLSID\{07C71AC0-FA90-11d3-B409-00C04F87578E}\InProcServer32,,,%11%\NKSCNUSD.dll HKCR,CLSID\{07C71AC0-FA90-11d3-B409-00C04F87578E}\InProcServer32,ThreadingModel,,"Both"
[SourceDisksNames] 1=%DiskName%,,
[SourceDisksFiles] NKSCNUSD.dll=1
[DestinationDirs] NKUSBSCN.CopyUSDFiles=11 ;NKUSBSCN.CopyUSBFiles=10,system32\drivers
[NKUSBSCN.CopyUSDFiles] NKSCNUSD.dll,,,32
;[NKUSBSCN.CopyUSBFiles] ;usbscan.sys,,,32
[Strings] ProviderStr="rawc@live.com" Mfg="Chris Rawlings" DiskName="Nikon Scan 4 CD-ROM" DeviceDescLS0040="Nikon COOLSCAN IV ED" DeviceDescLS0050="Nikon COOLSCAN V ED" DeviceDescLS5000="Nikon SUPER COOLSCAN 5000 ED" - In the same place you saved the custom INF file, you will also need the file 'NKScnUSD.dll'. This file can be found in C:\Program Files (x86)\Common Files\Nikon\Driver\ScanUSB, so just copy if from there into C:\Temp\Nikon. This file was installed to your system when you installed Nikon Scan 4.0.3.
- Install the modified driver files for your slide scanner:
- Now that both installation files are in place in C:\Temp\Nikon, turn the scanner on and navigate to the device in the device manager (right click 'Computer' in the start menu or on the desktop --> Manage --> Device Manager).
- Right-click on the scanner device and choose 'Update Driver Software'.
- Next, choose 'Browse my computer for driver software' and browse to C:\Temp\Nikon where you saved the driver installation files.
- Give Windows permission to install the driver and you should be all set to start scanning with Nikon Scan on your 64-bit Windows system.
NOTE...extra issue with Win10:
.....So many thanks. Using my Coolscan 5000 ED with 64-bit Windows 10! The only thing I had to do differently was force Windows to install the unsigned driver. Hold the shift key while pressing "restart", then follow the advanced options to start the next session with "disable driver signature enforcement". Everything else is just as described.
Dropped Frames During Capture
Problem We were experiencing lots of dropped frames during a SVHS tape capture (about 10 tapes from one customer). We were using Sony Vegas' vidcap and the ADVC300 canopus box on the win10 PC.
We tried:
- different system harddrives
- confirming defrag had been run
- CPU was not busy
- system was not busy
- cleaned tape
In all cases the dropped frame count did not really change.
Even tried the following DV capture programs:
- WinDV
- Scenalyzer
WinDV resulted in the same large number of dropped frames and Scenalyzer kept stopping before the drop frame "source".
Find
All of the tapes had gaps between the clips of a few seconds or more. These gaps were pure snow....ie. nothing recorded. When one of the capture programs hit the gap it immediately clocked up about 100 or more dropped frames.
Seems that there is nothing wrong with vidcap...I thought that there may have been an issue with Win10.
Website Roksprocket Mosaic Services Process
Mosaic process: C-A-M (CAM is the process used for publishing on Joomla)
C- first there has to be a category (stay away from K2!!!) For each of Film, Video, Photo, and Audio I created a root category for each.
A- then there has to be an article; this article will be blank, more a placeholder than anything else, but because we want to be able to switch between all mosaics this article will need to show the shortcode buttons for each respective Service category: Film, Video, Photo, Audio. This makes these mosaics all look alike and interact with each other.
M- then the Menu creation will tie everything together, uniting the article with the menu, the menu is the driving force whereby calling any other module on the page; ie. the header, everything else that goes on all pages, including the specific mosaic. The menu type is single article. Each mosaic will only be assigned to it's menu page; otherwise there will be a rocksproket error on the pages it is not meant for.
-The details tab must be finished first and then saved before moving on to the Modules Assignment tab, otherwise the correct menu page for the modules to be assigned will not show up when following through and clicking on their link in the list of various modules need for that page. If you link specific modules to other pages as well, an error will result on those pages that module is not intended for, these pages will need to be unlinked within in module manager; as an error page will show up and will try to direct you back to the Control Panel.
-So again, remember to associate the menu location and Parent (menu) Item, and then SAVE before moving on to the modules.
-in Page Display tab; DO NOT Show Page Heading! It will already be in the headerbar, and so is not needed.
VHS Tape With Multi-track Audio!
Overview A customer dropped off a VHS tape of his wedding and mentioned that it may have two different audio tracks that can be played.
Observations
Regular looking VHS tape. Tape started with a slide show, then the wedding and reception. Tape is about 2 hours. Played the tape in the Panasonic AG5210 (standard VHS VCR) and a JVC HRS5910U S-VHS vcr ...both had trouble playing the audio for the slide show and no trouble playing the audio for the rest of the tape!
Investigation
(refer to wiki article on VHS tape) VHS tapes started with a linear audio and later linear stereo audio track recorded at the upper edge of the tape. In 1984 JVC developed a Hi-Fi stereo audio system that embedded the audio into the video recording. To maintain compatibility with the older system the audio track was duplicated on the linear stereo audio track. The quality of the Hi-Fi audio is second only to the CD quality. Because there can be two stereo audio tracks, Hi-Fi and linear, there can be two different audio tracks. It seems though that many VCR's will only play one of the tracks, either Hi-Fi or linear.
Solution
Use our Sony SVO-9500MD S-VHS Hi-Fi vcr deck. This deck has a switch to select the audio track, labelled AUDIO (selections: Hi-Fi, Mix, Norm). Run the tape through twice, once using Hi-Fi, and once using Norm. Then in Vegas we can create a project with the video and the two different audio tracks.
Playing the tape on the Sony SVO-9500MD S-VHS I discovered the two audio tracks!
Network Speed Slow and CPU Slow
Overview Copying to or from Apollo was extremely slow....about 100kb/s or less...not even in the MB range. In addition when copying to or from Apollo the CPU would grind! Looking at the task manager a "system" task would pop up and be taking 30% or more of the resources to the point of music playing would breakup and you could hardly do anything on the PC....REAL REAL SLOOOOOWWWW!
Note:
Did notice that Apollo and Thor are using the Home network and Space and Xavier are using the Work network settings. This should not make a difference....I think. All firewalls have been disabled. Before and after network upgrade did not make any difference. Upgrades included cabling to Cat6A and a "new" managed switch to replace the Netgear unmanaged 8 port one. Everything is gigabyte....NIC's, switch, cable (10GB actually). Realtek TL8111E driver looked up-to-date (actually the driver on the ASUS website was older than the one on Apollo).
Solution: Disabling “Large Send Offload (LSO)”
Large Send Offload is a technique of improving network performance while at the same time reducing CPU overhead. Apparently it does not work very well, so it was suggested to disable it. If you would like to know about LSO, check thisMSDN article from 2001.
LSO is an option located in a Device Manager under your network adapter, so this solution requires Administrator Privileges.
Follow these steps:
- Open Start Menu, right-click on Computer and select Properties
- Under Control Panel Home located on the left side of the window click onDevice Manager
- You will get a list of all devices on your machine. Expand Network Adapters.
- Find your Network Card and double-click on it.
- Select Advanced tab. You will get a list filled with different options.
- Select Large Send Offload V2 (IPv4) and set the value to Disabled
- Do the same for Large Send Offload V2 (IPv6) if it is available
- Click OK
After clicking OK, I tried to send a file over the LAN network. The transfer speed started very slow, but it was gradually picking up speed. I decided to restart the computer and try to send that file again and this time it worked like a charm.
Now that sending of files worked as it should, I also checked speed for receiving files. It turned out that it was still slow but all I had to do to fix that was to disable Large Send Offload V2 on the other computer. Once done, the problem was solved for receiving files as well.
Reference:
http://www.howtosolutions.net/2013/06/fixing-slow-sending-or-receiving-of-files-through-lan-network-using-windows/#.U08Vq_ldXE0
http://www.peerwisdom.org/2013/04/03/large-send-offload-and-network-performance/
Audio & Video Cables
|
More info at:
http://wiki.vidblaster.com/index.php/Connection_Types
16 Inch Transcription Records
These records are typically found in the radio broadcast realm. They were used to send out syndicated programs such as the Jack Benny show on these large LP's. They arrived with one side recorded so that they could play the show on two players and fade them from one to the next. The records were also recorded from outside in and then the next from inside out to avoid the pitch difference that would result if they had to jump from inside to outside of the LP's. Dennis Duffy showed me some of these records at the BC Archives. The stations used the back of the records to record commercials. SPARC here locally has old radio broadcast equipment.
http://www3.telus.net/radiomuseum/visit/index.html#membership
One of the SPARC directors in Kelowna has a player for transfers, so does BC Archives, and CBC Vancouver.
APS or Advantix Film Developing
For DEVELOPING check out Vistek: http://www.vistek.ca/digitalphoto/labservices/photofinishing.aspx
Film Rescue International may also develop this type of film.
Advantix or IX240 or APS
Introduced in 1996, and currently no longer made.
Processed or Not?
The film is on a polyethylene naphthalate (PEN) base, and is housed in a single-spool 39 mm long plastic cartridge. The basic diameter is 21 mm, while it measures 30 mm at the slot where the film exits. The slot is protected by a lightproof door. It is available in 40, 25 and 15 exposure lengths. The film surface has a transparent magnetic coating, and the camera uses this information exchange (IX) system for recording information about each exposure. The camera handles winding and rewinding automatically, to the extent that partially exposed films can, in certain cameras, be removed and used later. Numbered symbols (called 'visual indicators') on the cartridge end indicate the status:
- Full circle: Unexposed
- Half circle: Partly exposed
- Cross sign: Fully exposed but not processed
- Rectangle: Processed
Additionally, a tab on this end of the cartridge indicates that the cartridge has been processed.
DVD Media Research - Gold, M-Disc
Overview: Noticed a new DVD with longevity claims of 100 years plus called M-Disc. Is there a need to offer archival type of discs?
Media:
- MAM-A Gold archival discs
- 100 year plus longevity
- Inkjet hub printable available
- 4.7GB of data
- 8X
- $1.48 each at 50 disc package (wimmedia.com)(clearance)
- $2.81 each at 50 disc package not on clearance...can get these for around $2.00 each elsewhere?
- Falcon Gold archival discs
- 100 year plus longevity
- Inkjet hub printable available
- 4.38GB of data
- $1.62 each at 50 disc package (wimmedia.com)
- M-Disc
- 100 year plus longevity
- more robust than Gold
- not dye based
- 4X
- 4.7GB data
- special burner required
- LG for $25 at NCIX (Feb 2012)
- LG BluRay for $85 at NCIX (Feb 2012)
- $2.80 each at 25 disc package (NCIX)
- $2.99 each at 10 disc package (NCIX)
Costing versus return:
With standard DVD's running at 0.32 per DVD and water-shield at 0.76 and Gold at $1.48 (or $2.50). Pricing for archival discs could be at $19.99.... returning $18.51 for each copy.
Film Date Codes and Other Film Info
Good website regarding 16mm film stocks and how to id: http://www.paulivester.com/films/filmstock/guide.htm
AMIA the assoc of moving image archivists site with lots of good info including a date code chart:
http://www.amianet.org/resources/guidelinesnologin.php?accesscheck=/resources/guidelines.php
Here's another source with some differences especially for Canada (also in pdf in LHF procedures film info folder):
http://www.filmforever.org/Edgecodes.pdf
Another date code source:
http://historicphotoarchive.com/f1/16ekcode.html
Very good info on multiple types of film and how to id the dates:
http://www.brianpritchard.com/Date%20Codes.htm
Here's another blog with several edge code tables:
http://www.film-tech.com/ubb/f1/t011524.html
Stats on Reel to Reel Tapes
Reel to Reel tape (or Open Reel Tape) came in many shapes and sizes. The most common to the average consumer is 1/4" tape. Reel to Reel tape came on many different sizes of reels. Most common among these are 3 inch, 5 inch and 7 inch. Larger 10 1/2" reels were also made but not as common. Most Reel to Reel machines were able to record and play back in three different speeds. Unlike most forms of recording media, it's impossible to determine how long a Reel-to-Reel tape may play for, or how much the final conversion costs will be, even if we know the size/length of your tapes! The reason for this is that reel-to-reel tapes may have been recorded at several different speeds and on as many as four separate tracks. As you can see from the chart below, a small 300ft reel may play for as long as 2 hours or as little as 7.5 minutes depending on what speed it was recorded at and on how many tracks! To make CD's from the large, slow playing reels means we have to break up the digital file into a length that will make the CD be no more than 72 minutes long. (See charts below). (information from: www.copycatdigital.ca)
| REEL SIZE | APPROX RUN TIME PER TRACK | |||
| Tape Length in feet | 1 7/8 ips | 3 3/4 ips | 7 1/2 ips
|
|
| (300ft) | 30 Mins | 15 Mins | 7.5 Mins | |
| (600ft) | 60 Mins | 30 Mins | 15 Mins | |
| (900ft) | 90 Mins | 45 Mins | 22 Mins | |
| Time Chart | Recorded On Both Sides (directions) | |||||||
| 150 FT. | 300 FT. | 600 FT. | 900 FT. | 1200 FT. | 1800 FT. | 2400 FT. | 3600 FT. | |
| 1 3/8 IPS | 30 MIN. | 1 HR. | 2 HRS. | 3 HRS. | 4 HRS | 6 HRS. | 8 HRS. | 12 HRS. |
| 3 3/4 IPS | 15 MIN. | 30 MIN. | 60 MIN. | 1 1/2 HRS. | 2 HRS. | 3 HRS. | 4 HRS. | 6 HRS. |
| 7 1/2 IPS | 7 1/2 MIN. | 15 MIN | 30 MIN. | 45 MIN. | 1 HR. | 1 /12 HR. | 2 HRS. | 3 HRS. |