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30 years..

On a sunny day (Tue, 14 Jan 2014 22:51:13 GMT) it happened snipped-for-privacy@puntnl.niks (Nico Coesel) wrote in :

The standard for over the air is MPEG2, and now H264 IIRC. What you download over the internet can be anything...

This is how I re-encoded some old Divx and MPEG stuff for my Samsung LCD: Video Format : AVC Format/Info : Advanced Video Codec Codec ID : H264 Bit rate : 10.0 Mbps Width : 1 920 pixels Height : 1 080 pixels Display aspect ratio : 16/9 Frame rate : 25.000 fps Resolution : 24 bits Bits/(Pixel*Frame) : 0.194 audio is ac3

That way at least it plays it right.

I once wrote some scripts and spend a day or so converting everything using

1 PC and one multicore laptop (ffmpeg libx264 IIRC). Or did it take 2 days and 2 nights? Don't remember. That is now on a 1TB harddisk connected to the TV. And backup'd on Bluray ffmpeg is good stuff.

It is mostly automated here, there is voice control too: For example I can type 'show zdf-hd':

panteltje12: # show zdf-hd show: selected program=zdf-hd show: using astra1 16.8 E show: current_angle=16.8 E same angle 16.8 E show: move_command=0 show: moving dish executing /usr/local/bin/xdipo -d S2 -m 8PSK -e 2/3 -c 1 -g '16.8 E' -f 11362 -p h -s 22000 -a 8192 || exit 1 xdipo: HAVE LOCK xdipo: HAVE LOCK xdipo: HAVE LOCK show: have LOCK show: no player specified, using xine as default player show: using xine -D -gf stdin:/ show: using prog executing /usr/local/bin/xdipo -d S2 -m 8PSK -e 2/3 -c 1 -g '16.8 E' -f 11362 -p h -s 22000 -a 8192 -o | /usr/local/bin/jpinfo -p 11110 | /usr/local/bin/jpvtx | xine -D -gf stdin:/ executing /usr/local/bin/xdipo -d S2 -m 8PSK -e 2/3 -c 1 -g 16.8 E -f 11362 -p h -s 22000 -a s 11110 -o | /usr/local/bin/jpvtx | xine -D -gf stdin:/ jpvtx-0.2.2 (c) Jan Panteltje 2005 This is xine (X11 gui) - a free video player v0.99.5. (c) 2000-2007 The xine Team. xdipo: HAVE LOCK EAGAIN looping. read returned a=188 bytes, packets_read=1 inptr[0]=0x47 packets_in=0 pid=0 pid 0, service_id=11110 PAT seclen=25 Read 28 bytes - Found 4 services found service_id 11110 found PMT pid 6100 EAGAIN looping. read returned a=188 bytes, packets_read=1 inptr[0]=0x47 packets_in=0 pid=0 read returned a=188 bytes, packets_read=1 inptr[0]=0x47 packets_in=0 pid=6100 found video pid6110 video type mpeg4 H264 found audio pid 6120 type mp2 language deu found audio pid 6121 type mp2 language mis found audio pid 6123 type mp2 language mul found teletext pid 6122 found unknown stream in pid 6170 (0x181a), type 0x5, sub type 0x52.

And then it shows zdf-hd on the monitor...

When I record the stream with 'xdipo', from:

formatting link
as q1.ts, then, using 'mediainfo' shows me this about zdf, 1280x720 progressive! no interlace shit!:

# mediainfo q1.ts General ID : 3F3 Complete name : q1.ts Format : MPEG-TS File size : 18.6 MiB Duration : 11s 27ms Overall bit rate : 14.2 Mbps

Video ID : 6110 (0x17DE) Menu ID : 11110 (0x2B66) Format : AVC Format/Info : Advanced Video Codec Format profile : High@L4.0 Format settings, CABAC : Yes Format settings, ReFrames : 6 frames Duration : 11s 27ms Bit rate : 12.1 Mbps Width : 1 280 pixels Height : 720 pixels Display aspect ratio : 16/9 Frame rate : 50.000 fps Resolution : 24 bits Colorimetry : 4:2:0 Scan type : Progressive Bits/(Pixel*Frame) : 0.263 Stream size : 15.9 MiB (85%)

Audio #1 ID : 6120 (0x17E8) Menu ID : 11110 (0x2B66) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Duration : 10s 920ms Bit rate mode : Constant Bit rate : 256 Kbps Channel(s) : 2 channels Sampling rate : 48.0 KHz Resolution : 16 bits Video delay : -470ms Stream size : 341 KiB (2%) Language : German

Audio #2 ID : 6121 (0x17E9) Menu ID : 11110 (0x2B66) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Duration : 10s 920ms Bit rate mode : Constant Bit rate : 192 Kbps Channel(s) : 2 channels Sampling rate : 48.0 KHz Resolution : 16 bits Video delay : -470ms Stream size : 256 KiB (1%)

Audio #3 ID : 6122 (0x17EA) Menu ID : 11110 (0x2B66) Format : AC-3 Format/Info : Audio Coding 3 Duration : 10s 720ms Bit rate mode : Constant Bit rate : 448 Kbps Channel(s) : 2 channels Channel positions : L R Sampling rate : 48.0 KHz Video delay : -513ms Stream size : 586 KiB (3%) Language : German

Audio #4 ID : 6123 (0x17EB) Menu ID : 11110 (0x2B66) Format : MPEG Audio Format version : Version 1 Format profile : Layer 2 Duration : 11s 40ms Bit rate mode : Constant Bit rate : 192 Kbps Channel(s) : 2 channels Sampling rate : 48.0 KHz Resolution : 16 bits Video delay : -530ms Stream size : 259 KiB (1%) Language : Multiple languages

Menu ID : 6100 (0x17D4) Menu ID : 11110 (0x2B66) Format : AVC / MPEG Audio / MPEG Audio / AC-3 / MPEG Audio List : 6110 (0x17DE) (AVC) / 6120 (0x17E8) (MPEG Audio, deu) / 6121 (0x17E9) (MPEG Audio, mis) / 6122 (0x17EA) (AC-3, deu) / 6123 (0x17EB) (MPEG Audio, mul) Language : / deu / mis / deu / mul

Try installing 'mediainfo'. So you know what is happening. And get a decent satellite dish, and install 'xdipo'.. that 'show' script is on my site too, but I nearly always watch time shifted with xdipo, so I can skip the commercials.

You are hallucinating. Its normal, I once listened to an old golden oldie as mp3, and thought at one point: 'Hey that analog sounded way better'. The digital reproduced the old 'analog' sound perfectly.... Caught myself in the act.. No wonder audio people get confused, they cannot check for their illusions, like us techies who [should] _know_ how things were processed. The human perception is highly subjective. I want numbers!

Reply to
Jan Panteltje
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That depends on what you click on. I usually go for 720p sourced from HD TV or Bluray. Most is some kind of H264 in some kind of container format.

You can't turn a turd into gold :-) Although with some songs I blame

128kb MP3 for making it sound 'funny'. But it could be in the original recording as well.

True. Which is why lossy compression works so well :-)

--
Failure does not prove something is impossible, failure simply 
indicates you are not using the right tools... 
nico@nctdevpuntnl (punt=.) 
--------------------------------------------------------------
Reply to
Nico Coesel

recent BluRay disks,

Ray,

ay creating space

Today I was in a Tigerdirect store looking at DVD burners. And saw a blurb about m-disc. Anyone know much about them.

Below is something I found somewhere on the WWW.

Until recently, family historians had to rely on multiple copies and regula r updating to insure the good health and accessibility of digital files. Th e M-Disc (Millennial Disc) is a game-changer that brings long-term media s torage to the home computer user in the popular DVD and Blu-ray format. The National Archives notes a 2 to 5 year life expectancy for CD/DVD media; M- Disc is rated to last at least 1,000 years and survived rigorous testing by the U.S. Department of Defense Naval Air Warfare Weapon's Division at Chin a Lake, California

Dan

Reply to
dcaster

On a sunny day (Fri, 17 Jan 2014 14:20:17 -0800 (PST)) it happened " snipped-for-privacy@krl.org" wrote in :

Wikipedia has some info:

formatting link

Its is a bluray - DVD compatible format, with a better layer.

formatting link
its not even expensive... And the burner:
formatting link

67$, that is cheap, I have a normal LG Bluray burner that works very well.

Thank you for signalling this, did not know that, may well get one!

Reply to
Jan Panteltje

Even if the disks last 1,000 years, the format will not. Nor will the drives be available and still working all that long.

Joe Gwinn

Reply to
Joe Gwinn

On a sunny day (Fri, 17 Jan 2014 22:31:27 -0500) it happened Joe Gwinn wrote in :

I have seen record players in the shops again. Some of the stuff I have I think will be so valuable in a thousand years that money will be no problem to get it back, some lab will do it.

Even today....

Reply to
Jan Panteltje

The original M-Disk was a 28 pin solid state hard drive. We used the

40 MB version in the DR2000 & RCB2000 Telemetry systems to store the system software and Windows CE. 
--
Anyone wanting to run for any political office in the US should have to 
have a DD214, and a honorable discharge.
Reply to
Michael A. Terrell

Does the NMEA parser look at the checksum? Once in a blue moon you will get a corrupt NMEA sentence from most GPS modules, and/or it will be missing entirely.

Makes sense. You might not want to spend the space on the math.

That works as long as you stay on sane operating systems. Then somebody tries it on a legacy OS (with "r" instead of "rb") and then it loops forever looking for the CRs... :)

Put a ^L before the column labels to get a nice form feed! Maybe bold...

Print a "reference card" operating manual and put it in the case of the device. Use rad-hard paper.

Matt Roberds

Reply to
mroberds

I did some more research as what to buy and what to expect. I must say there do arize some serious questions as to 1000 years durability of M-Disc.

In their own paper, on page 3

formatting link

it shows for M-Discs storage capability in years:

30% RH 16969 6880 2875 1237 547 248 50% RH 7865 3189 1332 573 253 115 70% RH 3646 1478 618 266 117 53 Table 2. M-DISC DVD Expected Mean Lifetime in Years Under Selected Storage Conditions

When I look at relative humidity here NOW, it is close to 85%, and the temperature in summer often reaches 40 degrees C.

Studying the layer composition (kept secret but the others pdfs from the same site

formatting link
show a logarithmic decrease in reflectivity due to fast oxidation of the metals in the data layer), it is obvious these disks do not like moisture .... And higher temperature accelerated oxidation of the data layer occurs. It seems to me, from MY experience, that normal DVD data layers are less sensitive to oxidation, moisture, actually have washed those, and stored some in wet environment. Some died of fungus (dark spots in the discs) but that was already there from the beginning, I returned those disks (TdK). Anyways those DVD-R disks treated that way that were OK from the beginning (Verbatim) are still OK 10 years later. I use only one rule: Keep In The Dark I have a special alu box for that, and keeping in the dark is MUCH easier than creating an environment with only 50% RH.

So I wonder, is it worth it.. (I need 200 GB, say 50 4.7 DVDs at least), works out to about 150 Euro. That brings me to a second point, the limited 4.7 GB capacity, no bluray version I could find. So, is this the latest marketing hype, or how serious should I consider M-Disc for long time storage?

Reply to
Jan Panteltje

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