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Author Topic: Stuttering while editing HD multicam  (Read 15530 times)

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Offline PhxHorn

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Stuttering while editing HD multicam
« on: July 30, 2012, 01:20:57 AM »
I'm running into some stuttering issues during preview while editing an HD multicam video in Vegas HD Platinum 10.  So far I have 2 camera angles with two hours of 1080 footage from each one, and I'm planning to add one or two more camera angles.  My graphics card is just listed as an 'Intel HD Graphics' card.   My system is as follows:  Windows 7, 32-bit, Intel Core i3 CPU, 540 @ 3.07 GHz.  Board: H55M-P33(MS-7636), 4 GB RAM, 2.93 usable.   I do have more than one external hard drive, but they are just your standard externals like Western Digital, Seagate, Iomega, etc.     I was expecting the stuttering to happen at some point, as a friend of mine who does a lot of multicam editing had mentioned I might need to upgrade my video card, so I'm wondering if (A) this system seems adequate to get the job done with a new card, and (B) what video card you'd recommend to eliminate the stuttering.  (C), do I need more RAM?   I'm not into gaming, so that is not a factor.   Thanks. 

Offline beatkilla

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Re: Stuttering while editing HD multicam
« Reply #1 on: July 30, 2012, 01:28:57 PM »
Common issue for multicam and even for single source.What format is the footage(AVC)?

Try changing the preview mode to Draft OR most likely you will have to render your sources to another format to allow for full framerate playback.I dont use the built in multicam in Vegas as it has limitations.I use Excalibur.

What i do is sync all my sources and than create a MASTER Picture In Picture Videoof all the sources rendered to MXF format and multicam from there.I dont think the built in multicam allows this,but maybe so.

Basically shrink all your videos so you can see them and render that to one video track.

Offline phanophish

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Re: Stuttering while editing HD multicam
« Reply #2 on: July 30, 2012, 02:53:51 PM »
My experience was less the video card and more related to IO performance of the storage.  HD video requires a lot of storage throughput particularly when dealing with multiple camera angles concurrently. 
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Offline PhxHorn

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Re: Stuttering while editing HD multicam
« Reply #3 on: July 30, 2012, 04:00:42 PM »
Common issue for multicam and even for single source.What format is the footage(AVC)?

Try changing the preview mode to Draft OR most likely you will have to render your sources to another format to allow for full framerate playback.I dont use the built in multicam in Vegas as it has limitations.I use Excalibur.

What i do is sync all my sources and than create a MASTER Picture In Picture Videoof all the sources rendered to MXF format and multicam from there.I dont think the built in multicam allows this,but maybe so.

Basically shrink all your videos so you can see them and render that to one video track.

They are m2ts files.   There are many fragments which took hours to sync, so I don't know that I'd want to render them to something else and re-sync.   I tried switched preview to draft mode, but other than causing pixel blurriness, it didn't help much.  I did some additional web searching and there was a Youtube video that suggested opening my task manager (via ctrl-alt-delete) and changing the Vegas Video process to a higher priority.  I tried that and it seemed to improve things. 

Would it also help if I had each camera angle on a different hard drive?    The source files are on one of them.    Again, they are standard external USB2 hard drives.    If I do move one camera angle to a different hard drive, how do I tell Vegas where to find the files without re-synching it?  Thanks.
« Last Edit: July 30, 2012, 04:30:12 PM by PhxHorn »

Offline phanophish

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Re: Stuttering while editing HD multicam
« Reply #4 on: July 30, 2012, 06:00:05 PM »
Would it also help if I had each camera angle on a different hard drive?    The source files are on one of them.    Again, they are standard external USB2 hard drives.    If I do move one camera angle to a different hard drive, how do I tell Vegas where to find the files without re-synching it?  Thanks.

It might help a bit but honestly USB2 is relatively slow.  You should be using a SATA2 (6Gbps) attached hard drive, probably several, or possibly use a SSD for storing the source files for editing.  SSD drives offer both fast reads and super fast random access which ultimately is what you need if you are going to keep using the full AVCHD source files. 
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Offline PhxHorn

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Re: Stuttering while editing HD multicam
« Reply #5 on: July 31, 2012, 12:57:10 AM »
I must admit, I'd not heard of a solid state drive.  They sound impressive.   Any brand or model recommendations?   

Offline phanophish

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Re: Stuttering while editing HD multicam
« Reply #6 on: July 31, 2012, 08:31:54 AM »
I must admit, I'd not heard of a solid state drive.  They sound impressive.   Any brand or model recommendations?

There are numerous good brands.   Go with the best bang for the buck.    http://www.tomshardware.com/reviews/buy-ssd-recommendation,3255.html

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Jake: This car. This stupid car. Where's the Cadillac? The Caddy? Where's the Caddy?
Elwood: The what?
Jake: The Cadillac we used to have. The Blues Mobile!
Elwood: I traded it.
Jake: You traded the Blues Mobile for this?
Elwood: No. For a microphone.
Jake: A microphone? Okay I can see that.

Offline PhxHorn

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Re: Stuttering while editing HD multicam
« Reply #7 on: August 02, 2012, 03:22:13 PM »
I tried moving all the data files to the internal hard drive, which is connected to the board with a SATA cable, but it didn't help.   

I've done some reading and watched some Youtube videos on how to install an SSD (seems like even I could grasp it), but every article and video seems to assume that I'm going to use it as my system boot drive. They go on and on about changing master/slave designation and data cloning, none of which I want to mess with. If I keep Windows and my applications on my original hard drive, and merely use the SSD to store the video files, am I going to gain anything? Seems like the faster data transfer from the SSD might remove the stuttering issues. I really don't want to mess around with cloning Windows and all my apps over to the SSD, as I'd prefer (if it's feasible) to just use the SSD for the video files so that Vegas can access them faster. Or should I at least install Vegas Video on the SDD as well?

Offline phanophish

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Re: Stuttering while editing HD multicam
« Reply #8 on: August 02, 2012, 03:41:38 PM »
I tried moving all the data files to the internal hard drive, which is connected to the board with a SATA cable, but it didn't help.   

I've done some reading and watched some Youtube videos on how to install an SSD (seems like even I could grasp it), but every article and video seems to assume that I'm going to use it as my system boot drive. They go on and on about changing master/slave designation and data cloning, none of which I want to mess with. If I keep Windows and my applications on my original hard drive, and merely use the SSD to store the video files, am I going to gain anything? Seems like the faster data transfer from the SSD might remove the stuttering issues. I really don't want to mess around with cloning Windows and all my apps over to the SSD, as I'd prefer (if it's feasible) to just use the SSD for the video files so that Vegas can access them faster. Or should I at least install Vegas Video on the SDD as well?

You should be able to just add the drive.  It might help Vegas load faster on startup but should not impact video editing to have Vegas on the drive as well.  MAster/Slave is irrelavent for SATA drives.  I'd caution you that a SSD is your best bet to maximize your disk IO performance for HD video editing.  I'm not sure at all that even with the performance of a SSD that it will be fast enough to prevent stuttering. 
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http://www.archive.org/bookmarks/phanophish

Photo:  Nikon D300, D200, 35mm f/1.8,  50mm f/1.4, 85mm f/1.8, Nikon 17-55 f/2.8, Sigma 18-50/2.8 Macro, 18-70 f/4.5-5.6, 24-120 f/3.5-5.6 VR, Sigma 10-20 f4-5.6, Nikon 70-200 f/2.8VR, SB-800

Jake: What's this?
Elwood: What?
Jake: This car. This stupid car. Where's the Cadillac? The Caddy? Where's the Caddy?
Elwood: The what?
Jake: The Cadillac we used to have. The Blues Mobile!
Elwood: I traded it.
Jake: You traded the Blues Mobile for this?
Elwood: No. For a microphone.
Jake: A microphone? Okay I can see that.

Offline robeti

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Re: Stuttering while editing HD multicam
« Reply #9 on: August 03, 2012, 01:01:31 PM »
If you really want to speed things up, upgrade your PC.

I work on a windows 7 (64 bit), 8GB memory, i7 @ 3,4 GHz pc with two different hard discs (in the pc) and never have problems editing and rendering 1080p multicam videos.

I dont even use a videocard other than the onboard intel card.

Some great info about pc's for editing:
http://www.videoguys.com/Guide/E/Videoguys+System+recommendations+for+Video+Editing/0x4aebb06ba071d2b6a2cd784ce243a6c6.aspx   
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Re: Stuttering while editing HD multicam
« Reply #10 on: August 07, 2012, 07:21:36 PM »
ram ram ram......8GB or more.  It's not the drives it's choking on the processes.  12GB would awesome but 8 would be minimum I"d work with. 

Offline shoestringconcerts

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Re: Stuttering while editing HD multicam
« Reply #11 on: August 09, 2012, 02:58:46 AM »
Its not memory or your computer specs, you have enough power, something else is slowing it down.  m2ts files are relatively easy on vegas and your processor. 

You may have background programs or something slowing things up
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Offline robeti

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Re: Stuttering while editing HD multicam
« Reply #12 on: August 09, 2012, 11:59:05 AM »
ram ram ram......8GB or more.  It's not the drives it's choking on the processes.  12GB would awesome but 8 would be minimum I"d work with.

I use 8 wich I hardly need.

8 is really enough!
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Offline Gordon

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Re: Stuttering while editing HD multicam
« Reply #13 on: August 09, 2012, 11:29:26 PM »
ram ram ram......8GB or more.  It's not the drives it's choking on the processes.  12GB would awesome but 8 would be minimum I"d work with.

he's running a 32bit os so more ram won't do anything unless he upgrades to 64bit os.
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Offline PhxHorn

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Re: Stuttering while editing HD multicam
« Reply #14 on: August 10, 2012, 02:12:00 PM »
I 'ungrouped' and then deleted the unnecessary audio files, which gave me a little breathing room, and I was able to add the rest of the video segments I plan to use.  But at this point, I keep getting a 'low on memory' message from the PC and the program locks up.  Since I'm running Windows 7 32-bit, with 4 GB RAM, am I correct that more RAM won't help?   Earlier on someone posted

most likely you will have to render your sources to another format to allow for full framerate playback.I dont use the built in multicam in Vegas as it has limitations.I use Excalibur.

What i do is sync all my sources and than create a MASTER Picture In Picture Videoof all the sources rendered to MXF format and multicam from there.I dont think the built in multicam allows this,but maybe so.

Basically shrink all your videos so you can see them and render that to one video track.


I'm not sure I understand the middle line in the quoted text, but since one of the camera angles is just two long segments, I might be able to render them separately to an intermediate format and then replace them in the timeline without too much trouble.     This is new to me, so if someone can recommend a setting to render to, I'd appreciate it. 

 

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