AuthorJer

Weekly Digest – 2011-03-21

  • "…remember well that art 'lives' where absolute freedom is." – Bruce Lee #

Rendezvous – Ferrari Through Streets of Paris

I’ve been trying to hunt this video down for years. Luckily someone has taken it from the original VHS and posted it online.

Honshu Tsunami Ripples on March 11, 2011

Thx to Jon Voigt.

No Fear

I’m not sure which one requires more nerves. It would be pretty epic just to witness this event. I cannot imagine what it would be like to experience it.

Weekly Digest – 2011-02-28

  • R.I.P. legendary tax guru, David Ingram. He was so more than just "the tax man". Thank you for all your help David. You will be missed. #
  • Projected Japanese sword sword play: http://www.youtube.com/watch?v=0nfPDR3gGQc [thx Rebel] #

Digital Cameras Write Speed on SDHC Memory Cards

I recently purchased some Patriot 32GB 10speed SDHC cards for my Canon 60D. I was excited to see some improvements over my current 16GB 4Speed card…   but I was sadly mistaken.

Problem Symptoms

I can only record a few seconds before I get a “Movie recording has been stopped automatically” message. Apparently I’m not the only person experiencing this problem. This may be an issue with the 60D, as it seems that SanDisk & PNY users are experiencing the same issue on their 32GB 10Speed cards.

The problem is intermittent.  When it occurs, you can see the SD write status light on the camera flashing, but then the flashing will temporarily hold.  At this point, you’ll see the buffer bar pop up on the LCD.  Sometimes it will stall here, or continue.  If you are still recording after 4-5 seconds, you’re golden and it should continue on for minutes of recording.

In this thread, a user recommends using a special SD Formatter, which is specifically designed to comply with SD & SDHC standards.  What’s the difference between this and a standard Windows format?  Well, we’re about to find out. According to memin1857’s posting:

Sd cards are flash devices just like ssd’s. By using it (filling it with data) it will get slow by time. Because overwrites to sectors will be slow compared to fresh sectors as sd controller does not know actually which sectors are free when you delete files.
By formatting with the above utility and setting erase: ON it will instruct sd controller to release all charge from all flash cells so future writes will be much faster. (On par the day you bought your sd card)
This is comparable to MANUALLY TRIMMING an SSD.

NOTE: Do not confuse Overwrite ERASE with Flash ERASE. Overwrite ERASE is just overwriting sectors with zeroes so data is not recoverable but may not necessarily make your card faster, a real Flash ERASE is a command sent to the controller and will make your card freshly fast in short time. (discharging all sectors is a quick operation compared to overwriting them with null data) Also do not confuse with quick format. ERASE:ON is what you want for performance. (Smaller, older sd cards OR some sd card reader/controllers may not support real ERASE function, you will be notified by the format tool if this is the case

THIS IS AN HARDWARE ISSUE, NOT LOGICAL/SOFTWARE.

This may also fix if hardware sectors do not align with logical sectors. This will affect performance.
You may have trouble finding a configuration that can do flash erase.

Conclusion: Formatting with this tool may enhance your sd card performance and there are no negative affects. Worst case senario is you get do benefit.

I tried the SD Formatter, but am having the same results. However, I was unable to get the “Erase” option to work on my Sony VAIO laptop.  This funky movie recording stopping problem seems identical as when I use the Windows formatting.

I am attaching 4 text files which show the resulting recording sessions on the 3 unique Patriot 32GB cards of the same type.

videoSessions_02_cardA.txt    – Repeating test on first card. Attempting to record full 30 second sessions (file sizes greater than 175MB). Red marks auto-stopped recordings.

02/22/2011  09:09 AM       176,652,568 MVI_1156.MOV
02/22/2011  09:10 AM       177,215,652 MVI_1157.MOV
02/22/2011  09:10 AM       178,358,460 MVI_1158.MOV
02/22/2011  09:11 AM       176,667,328 MVI_1159.MOV
02/22/2011  09:11 AM        31,602,912 MVI_1160.MOV
02/22/2011  09:11 AM       178,501,696 MVI_1161.MOV
02/22/2011  09:12 AM        26,168,012 MVI_1162.MOV
02/22/2011  09:12 AM        32,185,552 MVI_1163.MOV
02/22/2011  09:12 AM        31,843,188 MVI_1164.MOV
02/22/2011  09:12 AM        21,323,728 MVI_1165.MOV
02/22/2011  09:12 AM        32,406,284 MVI_1166.MOV
02/22/2011  09:13 AM        32,109,836 MVI_1167.MOV
02/22/2011  09:13 AM        32,208,380 MVI_1168.MOV

02/22/2011  09:13 AM       177,901,300 MVI_1169.MOV

videoSessions_03_cardB.txt    – Testing a unique second card. Attempting to record full 30 second sessions (file sizes greater than 61MB). Red marks auto-stopped recordings.

02/22/2011  09:22 AM        61,924,480 MVI_1192.MOV
02/22/2011  09:23 AM        62,234,256 MVI_1193.MOV
02/22/2011  09:23 AM        62,047,496 MVI_1194.MOV
02/22/2011  09:23 AM        62,473,264 MVI_1195.MOV
02/22/2011  09:23 AM        26,144,048 MVI_1196.MOV
02/22/2011  09:23 AM        32,028,496 MVI_1197.MOV
02/22/2011  09:24 AM        32,117,764 MVI_1198.MOV

02/22/2011  09:24 AM        62,037,244 MVI_1199.MOV
02/22/2011  09:24 AM        26,262,360 MVI_1200.MOV
02/22/2011  09:24 AM        32,228,560 MVI_1201.MOV
02/22/2011  09:24 AM        32,203,492 MVI_1202.MOV
02/22/2011  09:24 AM        32,324,280 MVI_1203.MOV

videoSessions_04_cardC.txt    – Testing a third card. Attempting to record full 10 second sessions (file sizes greater than 58MB). Red marks auto-stopped recordings. Lens cap was on during these sessions.

02/22/2011  09:36 AM        58,113,676 MVI_1228.MOV
02/22/2011  09:36 AM        60,127,292 MVI_1229.MOV
02/22/2011  09:36 AM        60,470,144 MVI_1230.MOV
02/22/2011  09:36 AM        60,958,272 MVI_1231.MOV
02/22/2011  09:36 AM        31,874,880 MVI_1232.MOV
02/22/2011  09:37 AM        61,413,000 MVI_1233.MOV
02/22/2011  09:37 AM        26,051,140 MVI_1234.MOV
02/22/2011  09:37 AM        31,969,860 MVI_1235.MOV
02/22/2011  09:37 AM        31,953,048 MVI_1236.MOV

02/22/2011  09:37 AM        62,914,432 MVI_1237.MOV
02/22/2011  09:37 AM        62,286,076 MVI_1238.MOV
02/22/2011  09:38 AM        25,760,912 MVI_1239.MOV
02/22/2011  09:38 AM        61,450,564 MVI_1240.MOV
02/22/2011  09:38 AM        26,067,636 MVI_1241.MOV
02/22/2011  09:38 AM        31,970,588 MVI_1242.MOV
02/22/2011  09:38 AM        31,785,792 MVI_1243.MOV

02/22/2011  09:38 AM        60,489,452 MVI_1244.MOV

I find it interesting how, on a freshly formatted card, I’m able to record exactly 4 full sessions. On the fifth session, the recording stops recording automatically after 4-5 seconds.  After 5 sessions, I start to get intermittent failing sessions.

Another detail that I should note: On successful recording sessions that follow a failed session, the buffer bar will pop up and display 2 bars before the bar disappears and the session continues to record as normal. This behavior is consistent on recordings that follow a failed recording session.

My Advice

First, avoid 32 GB cards if you have a Canon 60D. If you have already purchased a few cards (like myself), make sure you have some freshly formatted cards on hand. When the time comes to records some critical moments, just pop in a fresh card and you should get a few good recording sessions before things start failing.

If anyone has better luck with this, please let me know.

**UPDATE**
In the comments Henry Levenson wrote,

The issue with the movie stopping automatically with the 60D has to due with the buffer capacity of the SD card used and the info transfer rate which has to be equal or > than 40 MB/second. If the transfer rate is slower or the buffer capacity for video’s on the card is exceeded.


If this is true, it leaves me wondering just how useful the speed rating of the card is. Henry’s explanation will potentially disappoint many 32GB SD card owners.
Thanks Henry!

Weekly Digest – 2011-02-14

Flocking

Weekly Digest – 2011-02-07

Taking Video w/ Digital SLR Cameras

I am upgrading my DSLR for video.
A pleasant situation occurred that put me in possession of a Nikon D300. I LOVE this camera, but it’s making me a bit of a snob when it comes to image quality. Please keep in mind that I am NOT a professional photographer, but I can recognise washed out colors and artifacting when I see it. This camera has neither.

So that brings me to the point of this little post. I currently have a JVC Everio HD camcorder and a Sony MiniDV. I love my Sony because it is feature rich (i.e. time lapse video & night vision) and has been very reliable till recently. Since I’m working with tape, it sometimes gives me some digital artifacts. Also, due to the mechanical moving parts, it’s not as light as my JVC and the battery life is about 1/5th that of modern camcorders.

I’m seriously thinking about purchasing a DSLR that takes digital video. Some key things that I am focusing on is the quality of video taken in low lighting conditions, weight, price and the severity of rolling shutter.

Big questions I’m asking myself is do I want to consolidate? Can I find a single camera that would replace my Nikon D300 camera, my JVC and Sony camcorders? Something that takes pictures as good as my D300 (“good enough”), yet can record video and be relatively light weight.

The D5000 has video capabilities and seems very comparable to the D300, though is about half the price ($700). This article compares the ISO quality of the Nikon cameras. From what I can see, the D5000 is approaching “good enough”.

This article
compares the the latest offerings from Canon, including video examples of the rolling shutter. They recommend the Canon 7d ($1500 USD) for those on a budget. Gizmodo also has a good articles showing the 7d’s capabilities.

Comparision
The Canon 7d and the Nikon D300 are both around 2 lbs. The D5000 is about 1.25 pounds.

This forum thread seems to be doing a great job of doing a comparison breakdown of the Canon 7d vs the Nikon D300.

A perfect example of rolling shutter. Notice the vertical lines bending as the camera moves side to side?

What about video on the cameras vs the camcorders? Do the camcorders also suffer from rolling shutter? Most do not. Most camcorders use CCD sensors (Charge-Coupled Devices), while digital cameras, including the famous Red cam, use CMOS sensors. According to Wikipedia, “CCDs use what is referred to as global shutters which take a single snapshot representing a point of time and do not suffer from these motion artifacts.” Therefore, camcorders using CCDs don’t suffer from this bendy rolling shutter effect.

Conclusion
I’m going to hang onto my D300 and look into purchasing a better camcorder that will be a good substitute for my JVC and Sony. This article discusses how I can record video from my D300 using an attached PC.

*Update*
I decided to purchase a Canon 60D for video and have sold my D300. I have manual lenses for my Canon for video and everything is looking great. The manual focus is helping train my imperfect eyes as well as building respect for nice “glass”. The rolling shutter effect has not caused me any issues with my 3D tracking using Syntheyes, so far. A review of my Canon D60 is overdue.

Welcome the Sun

Always playing with proportions. Draw & repeat. Which lines create something appealing? Like it? Try it again. Don’t like it? Try it again.

There’s also a little note for me to start the day… not to have the day start me.

Visual Diary – #1

Sometimes I laugh at myself. There’s a comfort in there I suppose. The comfort comes from the realization that everything will be ok. Specifically, I’m referring to my delay in posting anything from my sketchbook. I’ve delayed and delayed… and only not getting around to doing this. Will I actually save this entry and follow through? If I don’t, I’ll just give myself more to laugh at… and I don’t think the joke is funny anymore.

So, I’ll start here. The first entry in the green book. My visual diary. Most viewers will not find any significance in this, but I accept that… and I’m not going to let that thought delay me sharing. If you get something from this.. AWESOME. If not, well… I’ll keep trying. 😉

I have to digitize this work, because I’m not sure how much longer I can carry these sketchbooks around. I seem to have stayed as a floater. These work permits and immigration issues constantly hover over my head and I’m not sure where I’m supposed to live, month to month. Maybe sharing this stuff is to make sure it doesn’t get lost forever. So please, if you find something significant, feel free to right-click the image and save it locally. These sketches are free… but who knows when the web-hosting will run out.

Anyhow, here’s the first…

Weekly Digest – 2011-01-31

Career Choice

“Hey Jer, I have a student that is great with computers, a gifted artist and wants to do something in medicine. Ideas for career choices?”

– Shannon

Hey Shan,

I’ve put more thought into answer. Sorry if it felt like I was blowing you off. It is a difficult question that I am I’ve only been able to figure out during the last 3-4 years. What I’m learning is that when I label my “career”, I feel like I’m cursing myself. More specifically, I’m limiting myself.

As you know, I love to draw and I pretend to be a talented artist, so I kinda see where he’s coming from. I can give him advice, but I cannot list career choices. If he’s truly passionate about his art and medical, then he’s already in the communities where opportunities will arise. If not… well.. . slap him on the head and say, “Duh!”

😉

Siggraph is going to be in Vancouver Aug 2011 (THIS YEAR!!). As you remember, even when I was jobless, I managed to make it to California twice for Siggraph.  For me, it’s still the animation conference to go to.

To find some local meetups, there’s Michigan group called “SEMA FX”.  I don’t have their info, but Google will provide.

And to finish up my original point, keeping your mind open is the best way to make opportunities arrize.  I think the future “career” is adaptability. Sounds like he already knows what he likes, therefore he should dive into those passions. There’s nothing more frustrating than trying to fit your love into someone else’s classification. I’ve seen this burn too many artists out.  The adaptable ones always survive and their passion remains charged.

That’s the opinion of a floater who shouldn’t have to look too far to find more work.

L,

– Jer

artist / teacher / student / technician / dancer

Morphing Face Mahem

Thanks to Cecilia de Groot for this video. I love how the morphs match the tempo. I can only guess this was created in Flash.

This reminds me of a music video that I just saw last week. The Japanese Popstars Feat. Green Velvet – Let Go. There’s also a “Making of..” video that I would recommend checking out. Apparently one of the animators who worked on this was also responsible for work done on Pink Floyd’s “The Wall“.

The Japanese Popstars Feat. Green Velvet – Let Go from David Wilson Creative on Vimeo.

Nostolgic Video Games

While I’m being nostalgic.  here’s a slick Youtube video I cam across that shows many of the games that I spent SOoooo much of my time playing as a child.  What else are you going to do, when you are miles from your friends, it’s summer vacation and your a computer geek?

Calming Lines of Ink

Water LotusOver a year ago I was on a flight to Sweden. On the flight I drew this drawing while watching “Vicky Cristina Barcelona“, a Woody Allen flicK. I later brought the drawing it into Inkscape to clean it up.
I have two side notes:
#1: This movie is worth seeing just for the playing of the spanish guitar. Rachit agreed, so much so… that it inspired him to take guitar lessons.
#2: I have to remind myself that it’s “flick” not “flic”. I guess flic reminds me of the old “FLI” format, back when I was using Autodesk animator, which was the first format that I ever animated in. Almost feels like it was the last time I really animated… till recently.

But I digress…

This drawing is significant for many reasons, but one reason specially. It’s one of the few times in the last few times where I was totally lost in the process of drawing with a pen. I spent hours drawing this silly little drawing. That’s right.. HOURS. I think I doodled this, with a blue ball point sketch over the period of 3 hours, while watching various films on the plane… to Sweden… while watching the movie mentioned above… remember? Yes, I find it calming… even now. Even after all this time, I still stumble across it in my “art” folder and it calms me. It makes me wonder when I will again spend 3+ hours working on a simple doodle. Something not created for money. Not created to give it to someone else… but created for myself (though I think I eventually gave it away).

That’s all I wanted to say. I will continue with my cg work now… but I wanted to note the significance of this image, as it has just relaxed my eyes and posture, to the point of near bliss. Take it, steel it.  Use it as your logo. Tattoo it on your inner thigh.  Just mention it’s the product of CJ.

Red Arm Studio

Congrats to Angus for registering RedArmStudio.com.

You should go over and checkout the latest image he’s uploaded to his new site.  For now, here’s a little bit of fan art for my bud.

Scattering Ray-Projected Metaballs

Why I love this program. I cannot remember the last time, if ever, I made a mistake in a 3D application and got usable results. However, in Houdini, it happens almost daily.

I cannot look back and cannot image even trying. Sorry.

Sand Art by Ilana Yahav

These videos are a bit old, but I recently came across them again so I figured I would share them.

More of Ilana’s work can be found on her website, sandfantasy.com.

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