Synchronize multiple videos

I'd like to create a video player that will play three video files simultaneously. I want the videos to be synched with each other as closely as possible.I'm starting with the following VI and I'm noticing that the video is not quite synchronized between the three files.
Question 1: Is there anyway to synch them up more closely?
I eventually want to be able to fast forward or skip ahead in one video and reset the position of the other two videos to match.

Although reading through it again, I am going to assume you are using Windows which makes synchronizing a bit tricky. What I would try next is using a timed loop. With this you will be able to control which processor is used and try to set the start time so it might be a better idea for you. Here a is link to NI.com for Timed Loops.
http://zone.ni.com/reference/en-XX/help/371361G-01/lvconcepts/configuring_the_labview_timed_loop/
Applications Engineer
National Instruments

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Synchronize multiple video tracks

How can I synchronize multiple video tracks using iMovie? i.e.: I want to make videos of myself playing different instruments, and then use clips from each to make a music video (with the sound track being all the instruments combined). The problem is having each clip synchronized to the music.

You would be much better off with Final Cut Pro 7, as it supports multi-cam clip editing. This feature allows you to do what you want. iMovie and Final Cut Pro X don't support this type of feature.

MediaPlayer - Synchronize multiple Video tracks

Hi !
I am exploring playing multiple videos (ex: camera1, camera2, camera3) using the mediaplayer.
As a first phase, I have implemented with 3 mediaplayers playing 3 different video (.asf) files.
However, I noticed that the performance as well as synchronizing the videos between the players is an issue.
(All the camera's are out of synch by the duration.)
Is there any alternative approach, that could overcome these limitations ? Appreciate your feedback.
Kumar

h3. *{color:#ff0000}Oracle Forums - Starting Sept 24th, 2010, these forums will be read-only. At that time, there will be new forums created at [http://forums.oracle.com] to accommodate most of the discussion topics here.{color}*
db

How do I synchronize multiple *sequential* clips using audio waveforms in Premiere Pro CC?

I recorded a concert at my kids' school. I ended up with:
Video in six separate clips (video+audio) from my Canon 5D Mark III camera
A single audio clip from my Zoom H4n recorder
The 5D Mark III can only record clips of up to 4GB in size, and clips 30 minutes in length. The clips broken up by the 4GB size limit are adjacent to each other, but the clips broken up by the 30-minute limit have a stop-pause-restart gap of a few second.
On past such projects, I have used PluralEyes 3.0 to synchronize the clips. But PluralEyes converts each stereo audio track into dual mono tracks, which I don't like.
I just happened upon this video: http://tv.adobe.com/watch/learn-premiere-pro-cc/merge-clips-automatically-using-audio-wave forms/?t=0 It shows how to synchronize a single video+audio clip with another audio clip. It also shows how to synchromize multiple concurrent video+audio clips with another audio clip, for multi-camera editing. But it doesn't show how to synchronize multiple sequential video+audio clips, as I got from my Canon 5D Mark III.
It seems that every time I select multiple video clips, the Synchronize item in the pop-up menu is disabled. When I select only the first video clip and the full-duration audio clip, I can synchronize them with audio waveforms. But then when I try to select the second video clip and the full-duration audio clip and synchronize them, it breaks the sync of the first video cilp
Can Premiere Pro CC synchronize multiple sequential video clips using the audio waveform method?
I am running Premiere Pro CC version 7.2.1 (4).
Thanks.

I'm an editing newbie but this was the very first task I needed to do, i.e. align multiple video clips with a single audio track. My setup is similar. I'm shooting with a Canon 70D, which breaks up video into 4gb clips, which are continuous and easy to align end to end. But the 70D like the 5D only shoots for 30 minutes continuously, so a second or two is lost hitting record again. My external audio was recorded continuously with a camera mounted Tascam (like a zoom) with a line in to the camera. So, in theory, the audio should be the same on the external audio and the audio associated with the video clips, which probably helps the software identify the identical wave forms.
I found that I could roughly align the video clips based on the audio wave forms and then "synchronize" the audio as shown in the video (Merge clips automatically using audio waveforms | Adobe Premiere Pro CC tutorials). I found that this aligned the audio perfectly but separated the video from its associated audio track. But it's easy to select the video and snap it back into alignment with its audio. While it would be nice to have everything merge automatically, using synchronize sequentially did not take much time.
Hope that all makes sense.

How do I stop multiple videos from loading at the same time and playing while looking at any article on google news?

Multiple videos load at once and start playing creating sound mess and sucking up ram. This is happening on Firefox on both Windows 8 and Windows 7 machines. This started about three weeks ago. I have run Avast, malwarebytes, hitman pro, and other malware killers. A new youtube setting appeared in settings, I have unticked everything. The videos do not appear to be youtube based.

You could enable plugins click-to-play. Also, set the plugins to Ask to Activate rather than Always Activate. I also recommend the extension "Click to Play per-element".
https://addons.mozilla.org/en-US/firefox/addon/click-to-play-per-element/

Multiple video playback issues

Hi All,
I would dearly appreciaty any light anyone could shed on this issue - I have run into a couple of Flash bugs that have stumped me for quite a while, and my deadline is aproaching fast.
Essentially, I would like to play back 3 reasonably high res videos (On2 VP6-S) simultaneously in one Flash App (using flash.video, netstream and netconnect - code only). Unfortunately, when I do this, the video playback drops a lot of frames, however, CPU usage does not go much above 50% - spread over both cores. I'm using a Core2Duo. If I play the same 3 videos simultaneously in 3 separate flash apps (FP10), they play much better (and use close to 100% CPU). I even tried creating it as an AIR app with 3 separate windows (NativeWindow), but that made little difference. I have lodged this as a bug via the Flash Bug Reporting System (http://bugs.adobe.com/jira/browse/FP-2341).
And yes, I do need to be doing something as crazy as this - it is for a pretty cool kiosk app, so I know what hardware will be used (and it has a good Graphics Card).
One promising workaround appeared to be playing back a single NetStream in multiple Video instances, as it is NetStream that does the decoding, so I could decode once and present it in 3 places. Two of my video objects are actually the same flv (on different monitors), so there would be a 33% saving right there. If necessary, I could encode both flvs into a single 1920x1200 flv (I've checked - it would play back ok) and then use video.mask to show the relevant bits.
However, another bug has been reported at http://bugs.adobe.com/jira/browse/FP-920 saying this does not work - Video in the object that last called attachNetStream(ns) will play, all others will freeze. They do mention a workaround that gets both videos to play - reset the size of freezed videos on ENTER_FRAME event. However, I cannot get this workaround to work - my first video is empty (not even frozen).
So there are a couple of things I would love any feedback on. Firstly, if anyone has insights on how I could get this to work. Secondly, if anyone could try the "multiple videos on one netStream with workaround" code below (simply copy, paste and point to a relevant flv) and let me know if it works and the versions of software they used, I'd be very thankful.
---------------Code Begins-------------
import flash.events.Event;
import flash.media.Video;
import flash.net.NetConnection;
import flash.net.NetStream;
showRedrawRegions(true); // both the placeholders and the entire window redraws every frame.
// When only video1 is attached, only video1's region is redrawing
// When both videos are attached, both video's regions are redrawing, BUT video1 is empty.
trace ("Capabilities.version = " + Capabilities.version); // = WIN 10,0,22,91 // in Flash CS4 10.0.2
//var nc:NetConnection = new NetConnection( null ); // Got Eror: 1137: Incorrect number of arguments. Expected no more than 0.
var nc:NetConnection = new NetConnection();
nc.connect(null);
// Connect nc here ...? Unnecessary in this case?
var ns:NetStream = new NetStream(nc);
ns.client = new Object(); // Simplest way to deal with cuePoints and metaData by doing nothing. For more, see http://blogs.adobe.com/pdehaan/2006/07/playing_back_flvs_with_actions_1.html
var stream:String = "test.flv";
var video1:Video = new Video(); // Defaults to size of 320x240
var video2:Video = new Video(); // Defaults to size of 320x240
video2.x = 320;
addChild(video1);
addChild(video2);
ns.play(stream);
video1.attachNetStream(ns);
video2.attachNetStream(ns);
// PROBLEM: Video in the object that last called attachNetStream(ns) will play, all others will freeze.
// See WORKAROUND below for solution:
//WORKAROUND to stop the first split stream from freezing:
addEventListener(Event.ENTER_FRAME, onEnterFrame);
function onEnterFrame(e:Event){
video1.width = 320;
video1.height = 240;
trace ("video1.videoWidth = " + video1.videoWidth);
trace ("video2.videoWidth = " + video2.videoWidth);
// When only video1 is attached, video1.videoWidth = 1920, video2.videoWidth = 0
// When both videos are attached, video1.videoWidth = 0, video2.videoWidth = 1920
---------------Code Ends-------------
Letting me know what exact versions of the following software was used would help a lot:
- Windows/OS (e.g. XP SP3).
- App code was written in. (e.g. Flash CS4 IDE 10.0.2, Flash Develop 3.0.1).
- App code was compiled in. (e.g. Flash CS4 IDE 10.0.2, Flex SDK 3.4.0.6955).
- Type and Version of Flash Player used (e.g. Standalone Debug Flash Player v10,0,22,91).
The versions I used are listed above.
Lastly, for what it is work, I found three interesting/informative results, but they didn't help me:
- When only video1 is attached, video1.videoWidth = 1920, video2.videoWidth = 0
When both videos are attached, video1.videoWidth = 0, video2.videoWidth = 1920
- When only video1 is attached, only video1's region is redrawing
When both videos are attached, both video's regions are redrawing, BUT video1 is empty.
- var nc:NetConnection = new NetConnection( null ); // Got Eror: 1137: Incorrect number of arguments. Expected no more than 0.
So I had to change it to:
var nc:NetConnection = new NetConnection();
nc.connect(null);
Does this mean my NetConnection class is different and maybe incompatible with this workaround?
Many, many thanks,

How to view/hear pretty much everything:
Assuming you already run OS 10.4.9 or above and have Quicktime 7.2, and are using Safari 2 or 3, download and install (or re-install even if you already had them) the latest versions, suitable for your flavor of Mac, of:
RealPlayer from http://uk.real.com/player/
Flip4Mac WMV Player from http://www.microsoft.com/windows/windowsmedia/player/wmcomponents.mspx (Windows Media Player for the Mac is no longer supported, even by Microsoft)
Perian from http://perian.org/
Adobe FlashPlayer from http://www.adobe.com/shockwave/download/download.cgi?P1ProdVersion=ShockwaveFlash
In Quicktime Preferences, under advanced, UNcheck Enable Flash, and under Mime settings/Miscellananeous only check Quicktime HTML (QHTM).
In Macintosh HD/Library/Quicktime/ delete any files relating to DivX (Perian already has them).
The world should now be your oyster!
You should also have the free VLC Player from http://www.videolan.org/ in your armory, as this plays almost anything that DVD Player might not.

Cannot select multiple video clips at a time

With the previous version, I could simply select all and import all my videos and pictures at once, in the order I copied them to my hard drive. Now, I have to "select entire clip" then, press letter E on every video clip, then, go back and add pictures. This is a huge downgrade from the previous version of IMovie.

hello ,thanks for jour mail ,but my English is very very bad sorry but
many thank for your feedback. Hav a nice Day
Am 09.12.2014 16:57, schrieb carpmusic:
>
Replace audio in multiple video clips at one time
created by carpmusic <https://forums.adobe.com/people/carpmusic> in
/Premiere Pro/ - View the full discussion
<https://forums.adobe.com/message/6998981#6998981>

Multiple Video Cards - 4 monitors

I was wondering if there was anyone out there that has a successful installation of multiple video cards. i.e. 1 AGP with dual ports and a PCI with dual ports. I would like to run 4 22" monitors on a G4. Just want to know if there were any reccomendations on card brands/types and configurations
Have multiple Mac's from G4 733 Giga to G4 Dual drive... Lil help

I'd reccomend using all ATI cards as they are/were better supported as far as multiple cards and features are concerned. A decent set up would be an ATI radeon 9800pro AGP with an ATI radeon 9200 PCI. Both are dual head and for PCI the 9200 is pretty good.

Synchronize multiple tasks and multiple boards with X-series USB devices

Hi all,
I am trying to figure out how to synchronize multiple tasks across multiple X-series USB boards (6353, to be precise).
I have to run a digital output task AND an analog output task on each board. All four tasks (the DO and AO on Board 1, and the DO and AO on Board 2) must be synchronized.
I know how to synchronize multiple tasks on a single board. I've been doing that for years. That works fine.
I know how to synchronize a single task across multiple boards (say, a DO task across 2 different boards). That works fine too.
For the life of me, I can't figure out how to marry the two. Everything I've seen, all of the examples, etc. assume you want to do one or the other, or that you have a RTSI cable available. Are there any examples out there that synchronize multiple tasks across multiple USB boards?
I tried exporting the AO clock signal from my master AO task to PFI12, and then using the signal on PFI12 to as the clock source for the remaining tasks (Dev1/PFI12 physically connected to Dev2/PFI12, and Dev1/PFI12 set as the clock source for Dev1's DO task).
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Under both configurations, I invariably get error -89137 when I try to start the tasks -- required resources (PFI12) in use by Dev1/do/SampClock. I understand what the error is telling me. What I don't understand is why I'm receiving this error when I don't have any of my tasks configured to use the DO Sample Clock. It seems as though it is not possible to export a clock signal to a PFI line and simultaneously run a clocked digital task, even if the clock source for that task is specified as something other than the DO Sample Clock?
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Hoping for insight from those wiser than I...
Diane
Solved!
Go to Solution.

Update: I decided to try using a counter as the source clock. One cannot use counter 0 to accomplish this, but it does appear to work with counter 1.
I'll take what I can get. Fortunately I have two spare counters. (Yes, I'm running counter tasks too -- 6 of them -- but they don't have to be synchronized.)
I have to add both digital and analog input tasks as well -- all synchronous with each other, but not with the output tasks since they'll be running at different sample rates. I hope I'm able to use a counter as the source clock for those as well.
My head aches.

Playing multiple videos in sequence

Hello all. I'm a complete newbie to Flash development, but
have been thrown into it with not just a deadline, but a (to me)
"complex" project. I have a Flash project which currently opens and
plays a video as part of whats on "the stage". I now need to add 2
more videos which will play, in sequence, after the first one
finishes. I've gone through the tutorials, read the help files, and
now I'm just feeling a bit "DUH" because I still can't figure out
how to do this. Anybody out there care to help a poor ol' graphics
guy avoid the bitter wrath of his boss?

A single instance of FLVPlayback can handle multiple videos.
I can't remember what the upper limit is. So you can switch between
them based on user input. But I believe it can only ever play one
at any one time. I've used FLVPlayback quite a lot but not for what
you're describing, so can't answer from direct experience.
Check out this page, and the trivial example at the end
(whether its streaming or progressive is irrelevant here, streaming
should work just as well, but perhaps you need to use SMIL files
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http://livedocs.adobe.com/flash/9.0/main/00002980.html#wp3780233

Play multiple videos in sequence

Hi,
I've multiple videos stored in FMS and would like to merge them into a single video object in order to play all of them in sequence (so that a user thinks it's a single longer video). Is it possible?

This is a link from 3.5 but have you tried this:
http://www.overdigital.com/2009/08/02/flash-media-server-as-video-editingstitching-tool/

Snow Leopard iTunes 10.5 will not play multiple video tracks in QuickTime .MOV files

I recently discovered that Snow Leopard iTunes version 10.5 won't play multiple video tracks in a QuickTime .MOV file.
Both video tracks appear and play correctly when playing the file in:
- QuickTime Player 10 or QuickTime Player 7.7 on the same Snow Leopard machine
- iTunes 10.3.1 on another Snow Leopard machine
- iTunes 10.5 on Leopard or Windows 7
So I think the problem is iTunes 10.5 on Snow Leopard (although I haven't been able to test iTunes 10.4).
First test file is two 640x480 video tracks side-by-side (total dimensions 1280x480):
http://160.94.17.23/demo/two-video-tracks-1280x480.mov
All I see is the first (left) video track, and not the right one. iTunes "Get Info" command incorrectly reports the video dimensions of the file as 640x480.
Second test file is two 640x480 video tracks played one after another (duration of 10 seconds each):
http://160.94.17.23/demo/two-video-tracks-640x480.mov
All I see is the first video track, and although it reports the correct file duration (20 seconds), the second video track never appears -- it simply freezes on the final frame of the first video track for the last 10 seconds.
Anyone else see similar behavior? Unless I'm missing something, I suppose I should submit this as a bug to Apple.

I have the same problem, i tried re-installing, converting it to AVC H264 but none seems to work so far

How do I copy and paste text style for multiple video tracks?

hello,
I am creating multiple video tracks with text. I want to easily copy and paste the style, i.e., Font, Color, Size - rather than having to scroll down the giant list of fonts to find the one I want, then change the color, then change the size - each and every time. This is arduous.
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I have 9 tracks of video for 9 different texts that will pop in and out of my video. I would like to be able to copy/paste then just change the text. This would save me a huge amount of time.

paulrudophmusic
I know of no way to alphabetized the Adobe Styles that come with the program.
If you had the time and the inclination, you could rename them all to force them to appear alphabetically, but that does not seem all that practical.
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In some instances, some things that you think that you cannot do in Premiere Elements obvious features, can be done by computer keyboard shortcuts. I check the keyboard shortcuts under the Edit Menu/Keyboard Customization and unfortuately did not find any that would be applicable to this situation.
As for your changes in one text file popping up unwantedly in another text file, that is because you have text files with the same name. Look into creating duplicates (with different file names) in Project Assets at the onset.
ATR

Multiple video displays

Hi,
I'm looking at different methods of sychronizing multiple
videos accross multiple displays and wondered if the best way to do
this would be via flash video of a media centre streaming to
seperate machines and their displays, could anybody advise me on
this.
Thanks in Advance
Jack

With the new Mac Pro 2009-03 models, Quad-Core Intel Xeon.
Is it possible to run eight Apple Cinema Display 30" monitors?
Yes.
This would require four single-slot Video Cards with two Dual-DVI outputs each.
The default NVIDIA GeForce GT 120 512MB card has one Dual-DVI and one single DVI, so it would not do the job.
No. It has one dual-link DVI port and one Mini DisplkayPort. With a Dual-Link Mini DisplayPort to DVI adapter it can run two 30" displays.
<http://store.apple.com/us/product/MB571Z/A?fnode=MTY1NDA5OQ&mco=MjkyNjI0Mg>
Likewise with the ATI Radeon HD 4870.
It also can run two 30" displays when used with the adapter, but it uses too much power to use with three other cards.
So what Video cards would be specified?
Four NVIDIA GeForce GT 120 or ATI Radeon HD 2600 XT. You could also use three of these cards and one GeForce 8800GT. It has to be the one made for the 2008 Mac Pro (and is no longer being sold).
Is this even possible?
Yes.
And is there enough power supply available for four such video cards?
Yes. Apple sells (sold) systems with four of these cards.
I understand the ATI Radeon HD 2600 XT Graphics 256MB GDDR3 is not compatible with the new systems, and it only offers one Dual-DVI & one Single-DVI port.
No and no. It is compatible, and has two dual-link DVI ports.

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I'm importing an entire season and they all default to "Movie". So, I know that I can set the video type to "TV Show", but if I select more than one video, there is no "Video" tab. Does anyone know how to set the types of multiple videos at once?

This is a good question and I haven't found a method yet either. This seems to be an oversight on Apple's part.
Message was edited by: Conal Ho

Synchronize multiple videos

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