Encoding (video artifacts)

I'm having trouble with artifacts in the video I import into idvd 6. I am editing HDV in Final Cut Pro 5 and have been exporting my video as a Quicktime Movie. I have also tried using Quicktime conversion, and various codecs but no matter what I do, there are severe artifacts any time there is movement in the video (plays just fine as a Quicktime file though, I only see the artifats in iDVD.
Would appreciate any help!

Hi
Karsten pointed at one important factor NTSC or PAL and keeping the
same setting the whole project trough.
I wonder about - How much free space there is on Your internal hard disk ?
Should be > than 20Gb. Less than 10Gb can give various strange behaviour
like extreme long coding-times and I got some DVDs with strange quality
reductions.
Just a thought from Bengt W

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H.264 export video artifacts with regular background pattern

I'm generally very pleased with the flexibility and quality of the H.264 video encoder provided by Premiere Pro.
However, I have one scene, with a graph-paper-like background that generates video artifacts when zooming in and out, no matter how high I set the bitrate.
I'm including two images created by grabbing frames from the exported movie from Quick Time Player. The first shows the scene without artifacts (at the end when the
zooming is over) while the second shows the effect when I'm zooming in on the scene. As you can see, the artifacts consist of graying out of the black lines and appearance of some "tick" lines along the lines, which I assume is due to the compression algorithm used by the codec. Does anyone have experience with such problems and can suggest a way to avoid this? It's a relatively short segment of the video that is effected.
Thanks in advance!
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Hmmm... the second file ppVideoArtifactOn.jpg appears by name in the original posting after the first, visible image. I'm not sure why it's not showing up, but I'll include it here again:

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Hi, I've got a question about codecs and compression. I'm using a Sony DV VX-2000 to shoot video and I'm wondering if in Final Cut Pro if you can use codecs/compression like DVCPRO50 to reduce video artifacts? I know that DVCPRO50 is made by Panasonic, but it's a DV format. I guess I'm more curious as to whether or not you can use any DV codec/compression with a DV tape? (except for PAL since it's not used in North America). I know this sounds silly but it would really help me for future projects.

DV is a 'codec' in its own right... in the sense that everything digital is a compression of the natural acoustic world. Since what comes thru the glass HAS to be compressed to fit as digital information to the tape, different cameras going to different tapes can do it differently... DV25, DV50, HDV, DigiBeta etc. All of these are FORMS of codecs... but not what we generally CALL codec. Plus, apple throws in it's own codec in the form of a QT wrapper to the material captured/read off the tape.
So -- you really need to be capturing with the same FORMAT (we'll call it format now...) as the material was encoded to tape.
Does that help you?
You're mixing terms and getting yourself confused, I think.
CaptM

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Hello,
I have a Mid-2014 Macbook Pro 15-inch, 2.5 GHz Intel Core i7, 16 GB RAM, GeForce GT 750M 2 GB.
When I perform GPU-heavy operations, such as rendering in Adobe Media Encoder using CUDA, I start to get video artifacts onscreen. I have attached an example.
The computer is sitting on an iCurve elevated stand, and I can hear the fans running. I suspect this is being caused by heat but I'm not sure. The problem is exasperated when I'm using 3 displays so I am now only using 2 external displays.
The problem also gets worse as the gpu-intensive tasks progress.
There are no meaningful messages in the console logs that would indicate software problems.
I would like to check my GPU temperature, but there is no straightforward way to do this with the NVIDIA GPU.

Have you tried iStat menus?
http://bjango.com/mac/istatmenus/
You also might make an appointment at an Apple store genius bar for a FREE evaluation. Bring the screen shoots with you.
Ciao.

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xf86-video-intel 2.12.0-3
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commonmanthemes wrote: I think she's going to be rather annoyed until somebody updates one of those packages. ;-)
ouch...noone wants an angry gf
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Hello,
I am looking for a way to turn the display off and KEEP it off with applications running as normal, until I want to wake it up. It is not always staying asleep.
I have a hot corner set up so that I can instantly turn my iMac display off (including the backlight). This works fine most of the time, but when running certain applications, activating sleep display works for a few seconds then stops working and the screen comes back to life.
Example applications which cause this are iTunes when encoding a video (e.g. converting a movie to iPod format), iSquint when encoding video, iDVD when encoding and burning a DVD - seems to be anything that makes heavy use of the processor.
I have tried all sorts of things to get around this:
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2. 3rd party application and widget "Sleep Display" (http://linestreet.googlepages.com/home) which claims to make the display go to sleep and STAY asleep, suggesting "This version may work for people who experienced the monitor going off then coming right back on" - which indicates that it's not just me having the problem. This "Sleep Display" application doesn't work with Leopard though; the author acknowledges this and suggests he will update it if he upgrades to 10.5
3. different application - http://www.imalc.com/Site/SleepDisplay.html - this does the same as the hot corner and wakes up within a few seconds
4. sleep display tool in Dockables - same problem
5. "shades" system preference add-on, this makes the screen black and keeps it black but doesn't turn the backlight off
6. tried hiding the offending application, moving it to another space - nothing seems to work!
7. covering the imac with clothes - not ideal!
Thanks for your help!
Jim
P.S. the screensaver does stay on - so whatever is waking the sleep display isn't disturbing the screen saver - this suggests to me it's a bug. Obviously a black screensaver isn't the solution though - the backlight is still on.

I've got a very the similar problem. Brand new iMac 24" that shipped with Leopard -- my first Mac after jumping ship fom the Windoze side.
I had iTunes updating it's album artwork and since it was taking a while, I went to bed. When I turned out my light, I realized the screen had not yet gone to sleep (a good 15 minutes after it should have). So I set up a Hot Corner to put the display to sleep. When I put the mouse there, the monitor would go to sleep, but wake up within 10 seconds. At first I thought it was just the mouse moving as I walked away, but it wasn't.
I ended up turning the computer off because the big beautiful screen was throwing too much light. Since, I rarely turn my computers off and they're usually doing SOMETHING, this is really annoying.
Admittedly, I haven't tried some othe the potential solutions above, but this has to be the same bug. Screen saver stays on, monitor comes out of sleep.
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Hi guys.
I've been experiencing some video artifacts with my retail version Radeon 9800 Pro 256MB (not the OEM "XT" version from Apple) which is driving my ACD 23" (Clear Enclosure), which is connected to a Dualie 2.5GHz G5 running Tiger 10.4.2.
Prior to installing the upgraded video card, I never had this problem, so I am pretty sure it's the card.
It has only happened to me when the G5 wakes from sleep. And it doesn't happen very often, either. Maybe 1 out of 20 wakes from sleep. The only way to get it back to normal is to turn off the G5 completely, disconnect the ADC connector cable from the back of the video card, and then reconnect it and reboot.
I also have a second display connected to a Radeon 7000 via VGA and when the artificats appear, the other display is just fine. The weird thing is that I can actually take a screen shot of the artifacts, which I thought wouldn't show up. I am not sure what that means, but I think the fact that I can take a screenshot of it tells me the display is being corrupted at the system level. Right?
Any help would be appreciated. TIA.
Here's a screenshot:
http://tinyurl.com/8jvtb

Hi Bryanus,
Did you have an ADC port on your old card? Do you still have your old card? If this is the case, you can verify that the new card is implicated by re-installing your old card and seeing whether the problem repeats itself.
If you only have DVI on your old card, you would have to borrow an adaptor, but then you are relying on the adaptor to function properly.
If the problem doesn't repeat itself with your old card being used, then the new card is the culprit, in which case I'd ask to have it replaced, or get a refund.
If the problem does repeat itself with the old card, then you might want to consider other possible contributing factors such as the physical state of the monitor connection (dirty or tarnished contacts, bent pins etc.).
If the problem repeats itself with a new (replacement) card, you could add AGP slot issues to the above paragraph.
"Sleep" in an Apple Mac often generates issues with third party hardware, so your primary consideration that it is probably the card is (to me anyway) still the most likely.
All the best with the diagnosis!
Cheers!
Karl

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I have a problem that I am trying to encode a sequence of frames in a video container , but the encoded video doesn't work on toshiba blu ray disc player .. I am using the following ffmpeg command to encode frames and convert them to a video:
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"-vcodec mpeg4"
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The BluRay player leverages parts of Windows DirectShow but won't serve very well as a general player since Windows will load other players for the majority of media formats.
You can get away with a limited amount of tampering of the BluRay's players tolerance of media files until you violate some far away written DRM safeguard and kneecapping the BluRay player from doing anything.
If you're trying to validate your ffmpeg composed tests of your content as part of the editing process, you're better to avoid relying on the BluRay player that is purposed for narrow replay of licensed content and equipped with oversensitive safeguards susceptible to malfunctioning from the invasions of video pirates like you defined by studio executives.
You and I understand you're not a pirate but chances aren't being taken.
Whether you just dowloaded FFmep in the macho exe format or part of the millions of other packages that include it, you can tune your players to codecs pretty easily with the KLite Codec Manager or the Registry.
Chances are you already know about KLite since editing video on Windows eventually requires it and its hard to walk down the street without eventually kiceking over a copy. But just in case you've been living on a Martian cave with your hands over your ears, snag a mirrored copy from: http://codecguide.com /download_kl.htm
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Quicktime 7.6.4 won't play h264 encoded videos on my 10.4.11 MacMini

Hello:
This is my first post. I read through the forums and this seems to be the correct place to pose my question. If it's not, my apologizes.
I'm trying to find out why Quicktime 7.6.4 won't play h264-encoded video on my MacMini (G4 PPC). I'm running 10.4.11. I recently installed Perian 1.2.1 and it got some .avi files to play correctly, whereas before there was no sound. But the h264 files still get me a black screen, albeit with sound now. Some h264 files can be played in VLC Media Player (but that's a horrible player compared to Quicktime in my opinion, as it constantly drops frames and eats 100% of my processor time), but VLC even has the black screen problem on some h264 files as well.
I've also tried MPlayer OSX but that's really an alpha-type development and has a lot of bugs. Many movies it can't even open.
Sorry for the rambling, but again my question: Is there any way to play h264-encoded video in Quicktime 7.6.4 on my Mac?
Thanks in advance for your expertise and advice.

Mr Ram,
There is a group of Quicktime specialists in Apple.com ⇒ Support ⇒ Discussions ⇒ Quicktime .
The more data you give us, the easier it is to help us help you to diagnose your problem. Your disk space would be very useful. Contrary to some, I advocate iDefrag to assist VLC and MPlayer, which you were a little hard on.
GNU/Linux's free offerings
MPlayer was developed a decade ago, and I prefer it for viewing DVDs (for 'DVD Player') seems too dark. VLC (legally) copies many CRM-protected DVDs of yours, so you can play only the burned copy. When I'm having a problem playing a DVD, the VLC log tells me all: only perfect DVDs play well on VLC.
There are two ways of viewing everything.
Streaming MPEG-4
+H.264/MPEG-4 AVC+ is a fancy codec based upon MPEG-4: it requires a powerful processor to de-compress it. I watched an MPEG-4 movie from a G3 iBook in 2005. It played flawlessly.
Your Problem
Quicktime 7.X applications can not play +H.264/MPEG-4 AVC+ streams. It was a bug Apple never fixed. Frames are dropped because H.264 is so slow that it requires special hardware. You, I'm sad to say, don't have it.
To quote the Wikipedia on Quicktime: 'QuickTime 7 lacks support for H.264's Sample Aspect Ratio .[67] QuickTime X does not have this limitation; many Apple products (such as iTunes and Apple TV) still use the older QuickTime 7 engine.'
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My best,
Bruce

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Hi indra_n80
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Encoding (video artifacts)

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