Canon HV20 "jello effect"

[ZmanTheKiller]

HOW IN THE WORLD DO YOU PUT HV20 VIDEOS ON THE COMPUTER?!?!

[Juanod09]

i seems like in the water....

[korkiwi]

This particular jello effect looks like heat distortion.

[exitoyfama]

yo he filmado con mi camara hv30 en un tren varios kilometros,,,de camino...en la sierra....y no se nota nada de esto!!!!

[Kelvari7882]

Physics done broke!

[WeatherWarriordotnet]

Just for yuks...would love to see different cameras for a true comparison. One of those cameras should be a CCD chip camera. Also...maybe an SD but with a 16:9 format (to match the HD).

[Mangorule24]

i dont see how hv20 footage can be this shitty?

[TraxCreations]

JELLO???? ... NUM...NUM...NUM...YUM...YUM

[valerijusvsserioza]

this is why ccd owns cmos.

[dmitrivalencia]

i guess its not my hands nor car shcok absorbers after all that has a problem when i am taking some joyride vids, the camera itself is the problem...

[noiseache]

It's all about the fact that CMOS sensors scan down the frame and there is a lag between when it captures the top part of the frame and the bottom, it's almost a complete field on the HV20 so you get this effect. I doubt that could be cured even with the best RS correction software. The only solution here is to mount it on a piece of grip that takes the shocks out of the vibration but it'll never be perfect.

The same problem effects the DSLR cameras with video mode. Even the 5D has issues.

[RET80]

CMOS = sad.

CCD all the way, or vacuum tube!

The jitter/wobble is so pathetic on this it makes me sick to know that CMOS is becoming a standard.

[Klingl3r]

@RET80 Yeah, you´re right, but as long as people buy the crappy new cams with golden HD sign, stupid features like smile detection with no one taking care about the wobble and so on there won´t be a change.

[wallaguest1]

die to rolling shutter sensors! i hate them a lot

there are global shutter cmos sensors, why they don't use them ? is a shame.

[ToyFlameThrower]

trippy

[APrintezis]

unfortunately CMOS cannot handle vibration like that .. it's the sensor, not the mount or vibration or img. stabilization, etc.

[LanceCampeau]

This distortion is 100% caused by the use of a rolling shutter. It has ABSOLUTELY nothing to do with optical stabilization. The rolling shutter allows the camera's CMOS sensor to operate at the higher shutter speeds normally found with CCD sensor chips. This distortion is caused by lateral movements only (up and down camera movement will have little to no distortion). The rolling shutter outputs image data in a "sweeping" motion. CCD sensor chips output data in a linear line by line fashion.

[fiishywiishy]

interesting that you say its only effected on the horizontal plain. why dont companys just make the rolling shutter only effect the vertical plain? panning motion is primarily on the hori. anyways

[jasonr71]

It is definitely because of the vibration. The image stabilization is trying to compensate for the vibration. I filmed a concert from a small platform next to stage and the vibration of the sound did the same thing.

[bluefishswims]

just get an HV30...mines never done that.

[avene]

Haha, it would if you put it on one of those vehicles!

[KRAFTWERK2K6]

that's why i personally preffer CCD chiped cams.

Too bad i cannot use my HV20 for fast shots like that. I soooooo hate that rolling shutter effect.

[GeminisSci]

Gracias por la información, es muy valiosa

[decay]

dude this is so trippy its like your travelling through time HAHA

[DanielFiskaa]

What the fuck man? It only looks like you have filmed the vid. with a crappy low quality cell

[billybong69]

Yup it does this alright. I tried mine(hv30) on a sled and it did the same thing. Was kinda disappointed because my older sony matchbox style did not. Still a great camera though

[mstax]

Did you attach the camera to some very vibrating strut on that vehicle?

[leafsoup]

thats more like an aiptek lol

[houchenglin]

ha ha..

A very funny video. Thanks..

But I don't believe this is an hv-20

[tietie1424]

what in the world are you driving?! i highly doubt thats an hv20, even on youtubes "HD" the quality is WAY lower that real hv20 footage.

[aragorn65]

I think all CMOS video cameras have this problem. CCD cameras don't have this jello problem.

[FunkKing]

This is a Sony conspiracy. The vehicle is actually made of rubber.

[korgpadude]

rofl

[dkthemovie]

i find this funny in a way

[killazx9]

wow that's pretty bad!

[redsandro]

No more about the Image Stabilizer please. Turn that thing off and you have the same problem. :(

[apf1974]

Thank you for posting.

[wondnaereh]

Well, what kind of idiot is going to strap it to something that vibrates this much? OH, Um yeah, that's you. oops.

[tarantino666]

erm, you're an idiot! He wants to demonstrate the "jello" effect!

[12ampvacume]

you're the idiot.

[wondnaereh]

...and you're an idiot's idiot, idiot!

[TimmytheTinyTurtle]

It's about the cmos sensor.

[kudjo24]

@TimmytheTinyTurtle yeah, i was gonna point that out...its kinda obvious

[outkastsk8er20]

it seems that the jello effect aka rolling shutter is caused by the type of image stabilization equipped on the camcorder. take a look at lucasberg's pov sandrail footage taken with the sony hdr-hc3. this problem doesn't seem to exist with sony's steadyshot optical image stabilization system.

[iowabucks]

Can you turn the stabilization off and see if it still shows?

[rocketrig]

I think majority of the cameras could suffer exact same problem, if you attach cam directly to the hard surface of similar car with heavy vibrations, few springs could solve this.

[crystalclearvideopro]

Okay.. I am so glad you posted this... I am thinking about getting a sony z5u.... I want to know if this rolling sutter problem will be apparent when filming a wedding reception. DJ's use strobe lights and want to know if this will cause a problem... If anyone can.... please post a video using a camera with cmos technology during a reception with strobe lights.. I would greatly appreciate any info!!!

[theguymjp]

not suprised it was jellified xD that car thing sure looks... err... vibratie?

[dingdongfxck]

how can this be fixed?

[babnbub]

Rolling shutter can also be great thing my video "20 cent piece " shows just how wonderful it can be!

[sscrozz]

This "Jello Effect" is caused by multiple things. It only happens when vibration is added to the HV20's environment. This shows that it is the optical image stabilization system. This also happens due to the rate in which the horizontal lines that make up the HD image is somewhat slow. Because the camera shoots in full 1920 by 1080 it has to write 1080 lines of horizontal image each frame.

[sscrozz]

There are 30 frames per second when shooting in 30i or 30p. Ther are 24 frames per second when shooting in 24p. This causes the camera's image processor to achieve horrible results. This is caused by the vibration, making the image stabilization system go crazy, and the rate at which the lines of HD interlace is pushing through the camera. I hope this helps and doesn't confuse anyone. If you have any questions or disagreements, just comment back.

[sk83r101]

rolling shutter and this "jello effect" aside, the hv20 is a great camera.

[tube4yourass]

actually you suck more

[yodashqdotcom]

woah

[AugyAtarashii]

I assume this is the cause of fast shutter speed. While the vehicle vibration's frequency is relitively similar to the shutter speed, the "jello effect" appears extremely visible.

Sometihing like resonance...

[jongodwin]

Dude, I will probably never get that effect but that was kind of awesome. I'll have to put that in my movie "Marsijuana." It almost looks like you're underwater. I'm assuming it has to do with the vibrations playing with the IS and probably some shutter play.

[wildshare]

Wonder if slowness in the compression scheme contributes to that rolling shutter effect(?)

[FunnyChicken11]

it's caused by both the rolling shutter, and the miniscule amount of RAM on the HV20. the OIS has nothing to do with it

[rjkral]

Please post your settings...24P? Do you get the same with 60i and OIS on?

[RELISIX]

obviously thats gonna happen when your driving a quad-thing (golf cart?)

[SDMagicMan]

that made me dizzy...-_-ZZZzzz

[sajtospufi25]

what shutter speed and setettings? Never seen such a strong rolling shutter effect on this cam... Did you shoot this in 24p mode?

[treborly]

Good thing IC Engines cant operate cameras.

[Jiihaasaatana]

Lol, OIS would have to turn the lens into jello to cause this :P

[Jiihaasaatana]

Omg it's terrible. Definately not caused by optical IS. It's the rolling shutter effect that I believe most, if not all CMOS sensors have. Think i'll just stick to CCD..

[halivudestevez]

how can it be so shit?

First i thought it's a special digital effect, but it's a sideeffect.

[aswani69]

It happens because the sensor uses a rolling shutter, which creates a small delay between when the top part of the imager is read to the bottom. If you pan really fast you'll get a similar shear.

[dinglyberries]

HAHA LOL THATS KINDA COOL! But I bet you'd wnat to get it fixed of course...But still...kinda cool haha

[DevesterOner]

How you get that jello effect?

Problems with HV20?

[vqflores]

Use a Canon HV20 camera and add vibration. That's all it takes. Something in the camera design does the jello effect. If it was slower and smoother it would be cool, but it isn't.

[Ryguy1450]

what do you expect when your filming on a lawnmower or 4x4?

[whiteqtipful]

@vqflores The "jello" effect is caused by "rolling shutter" in the CMOS design. The CMOS chip in these cameras have a limitation. Each frame of the video is made by scanning the incoming light, line-by-line, instead of taking a full frame image every 1/30th of second.

[theyvegonetoplaid]

@vqflores

Sensor scanning speed. Progressive CMOS sensors generally scan photosites from top corner, down the top row, down to the next row of photosites until the last one is exposed. Between the time where the first photosite and the last photosite on the sensor is exposed, the subject you're filming may have moved (or in this case, the camera's position has moved). If this scanning of the sensor's rows goes too slowly, you get this rolling-shutter effect, Jello-effect, skew, wobble, etc.

[pkConda]

@vqflores Yeah, this video was taken a long while ago. We've come to see with the influx of budget hd camcorders and cellphone video recording, that this is definitely 'image stabilization' at work. Interesting video example, its too bad this 'jello effect' is so common nowadays