acquisition video framerate

Similar Questions

• Video framerate massively out of sync on the final rendering only

  Hi all

  I used a screen reader program (Cam Studio) to save myself showing something on the screen in full HD and record my voice with a microphone. Due to the program settings that have been apparently set the final file was a 20 fps framerate but was otherwise fine played and downloaded on YouTube with success. However there was a long interval at first until I started talking so I thought I'd use After Effects to crop the video and add a few titles in singles. I created a model to the standard 25 fps 720 p and imported images. Everything seemed fine, he was appearing on the timeline and preview at the same rate as the original. I made him as H264, but the final file was a total mess with the audio that plays normally but the video play faster, perhaps double the speed. I checked the images 'Interpret' > hand ' settings and it was defined on the original framerate 20 fps and also checked the details on VLC which also reported 20 fps. I recreated the comp and tried repeatedly to rule out tweaks, I would put but everything seems to be set up correctly.

  Anyone got any ideas?

  Thank you very much

  KW

  Finally it worked.

  I went on the whole record that incorrectly displayed as a sequence of images long - he was a little less 11 000 executives and the run time was 9.09. Simple math reveals that this means that the actual framerate was 5.62 fps not the 20 fps that was reported by all of the programs it runs. Defining "Interpret images" to the correct value then made the images make it perfectly in a model of 25 frames per second.

  The process with the image sequence was necessary because I did not have a good figure for the actual framerate and only knew he was playing MUCH faster (about four times) the speed, he should have. It seems that the framerate on the file flag was incorrectly, but the file always presents in preview in AE and plays correctly on YouTube and VLC which is kinda weird. My method is a very clumsy to find the solution, but an option if you have similar problems. Of course, the quality of the images is not important, because the real goal is simply to learn the total number of frame, so you can generate a sequence of images with resolutions tiny to save disk space and time. As it was, it took a few minutes to make almost 11 000 images in quarter HD resolution.

  Hope it will be useful to you.

  Edit: the framerate in real-time was also visible in the images in the preview screen, making the frame of the output method is not necessary, once you know this figure.

• Mijn map acquisition video van envivo geeft steeds een foutmelding

  Foutmelding die in verschijnt of software van arcSoft Showbiz is "Het niet wordt door een andere toepassing used available is expensive. Voert alle toepassingen die het mogelijk bloodstains, try opnieuw expensive af"which als ik alle op dat moment draaiende afsluit grabbed hij deze processen merging give.

  Hello

  Please select your language from the drop-down menu above to post your question in the language of your choice.

  The forum in which you've posted is for English only. If you can't find your language above, support for additional international sites options are by following the link below:

  http://support.Microsoft.com/common/international.aspx

  Hope this information is useful.

• How to start and stop the video capture in a state machine

  Hello

  I am a student of neuroscience and this is what I try to do: 1) trigger a camera to GigE (200 FPS), 2) start the video capture, 3) triggers a light that stays on for x milliseconds, 4) trigger a valve that will blow an air puff, 5) stop the tone and the valve at the same time and 5) stop the video capture 1 second after 4). For this, my VI is a state machine, with a State for each trigger (ex, 1 State for trigger camera 1 State of light of trigger, ect) and a statement to "stop" and a "time-out State." Everything worked except the video acquisition - the program could trigger the camera but only acquire a frame, because it was not running in a while loop and this is my first question: for an acquisition video is it always necessary to have a while loop?
  I guess the answer is Yes, so I built a loop of 'consumer' for the camera. A queue of the pre-trial 'trigger camera' in the loop of producer, I was then able to start the video capture, but now the problem is to stop it at the right time. I have an another queue in the State of 'stop' in the loop of the producer, but is not able to start the State 'stop' in the loop of consumer, I think that maybe it's because the loop of consumer gets "stuck" in the whole loop.

  I hope you can help me, the VI is attached. Thank you!

  Hello

  First of all, in your loop producer: STATE 'Stop', you use the flushing line, then there is no need to use 'item queue at the opposite end. You can use the enqueue function.

  Secondly, you said "I moved the command stop inside the while loop as you said, but it did not work. But if you look closely, you moved "Enqueue function" inside the while loop. Instead you should use Dequeue function. Please, look at the picture I posted an orderly manner.

  And remove the circled (i.e. function. Enqueue function loop of consumption, where I wrote 'Why stop here').

  Try now.

• Video resolution Mac-problem of Assembly.

  I am trying to edit a video that I have the WatchESPN Web site registration form. It's a game show. On playback, audio is fine, but the video is lagging. I have a Mac and I guess that's a resolution problem. How to remedy this, thank you.

  Convert to MP4 and visit this link:

  How to convert a video Framerate Variable constant (Audio desync Fix) - YouTube

  Thank you

• Audio drifting on the Constant framerate

  I have a problem of audio drift on a specific set of videos when using first Pro CC (2014) on Windows 7. The audio starts well, but ultimately derives from mismatch way. This already happens in the Source monitor. I read that this may be due to the use of the video framerate Variable. However, the video I have is Constant framerate. At first, I thought it could itself or my PC, but when I dropped a Blu - ray rip in first, it worked perfectly. It turns out that this happens systematically with all the videos on the site source (Giant Bomb).

  It seems first to misinterpret the images. When I play the video in MPC - HC, duration 02:51:10 bed, but when I put in first, it signals the duration as 2:51:00:03. I checked the settings of the sequence, but they seem to all correspond with the video source. Even when I put it manually, it does not help.

  Screenshot:
  

  And here is the result of MediaInfo:

  General
  Complete name : D:\Exchange\source\problem-file.mp4
  Format : MPEG-4
  Format profile : Base Media
  Codec ID : isom
  File size : 5.12 GiB
  Duration : 2h 51mn
  Overall bit rate mode : Variable
  Overall bit rate : 4 281 Kbps
  Writing application : Lavf55.19.104
  
  Video
  ID : 1
  Format : AVC
  Format/Info : Advanced Video Codec
  Format profile : [email protected]
  Format settings, CABAC : Yes
  Format settings, ReFrames : 3 frames
  Format settings, GOP : M=1, N=120
  Codec ID : avc1
  Codec ID/Info : Advanced Video Coding
  Duration : 2h 51mn
  Bit rate : 4 000 Kbps
  Width : 1 280 pixels
  Height : 720 pixels
  Display aspect ratio : 16:9
  Frame rate mode : Constant
  Frame rate : 59.940 fps
  Color space : YUV
  Chroma subsampling : 4:2:0
  Bit depth : 8 bits
  Scan type : Progressive
  Bits/(Pixel*Frame) : 0.072
  Stream size : 4.78 GiB (93%)
  Writing library : x264 core 140
  Encoding settings : cabac=1 / ref=3 / deblock=1:0:0 / analyse=0x1:0x111 / me=hex / subme=7 / psy=1 / psy_rd=1.00:0.00 / mixed_ref=1 / me_range=16 / chroma_me=1 / trellis=1 / 8x8dct=0 / cqm=0 / deadzone=21,11 / fast_pskip=1 / chroma_qp_offset=-2 / threads=24 / lookahead_threads=4 / sliced_threads=0 / nr=0 / decimate=1 / interlaced=0 / bluray_compat=0 / constrained_intra=0 / bframes=0 / weightp=2 / keyint=120 / keyint_min=12 / scenecut=0 / intra_refresh=0 / rc_lookahead=40 / rc=abr / mbtree=1 / bitrate=4000 / ratetol=1.0 / qcomp=0.60 / qpmin=0 / qpmax=69 / qpstep=4 / vbv_maxrate=8000 / vbv_bufsize=8000 / nal_hrd=none / filler=0 / ip_ratio=1.40 / aq=1:1.00
  Language : English
  Tagged date : UTC 2014-07-30 04:09:12
  
  Audio
  ID : 2
  Format : AAC
  Format/Info : Advanced Audio Codec
  Format profile : LC
  Codec ID : 40
  Duration : 2h 51mn
  Bit rate mode : Variable
  Bit rate : 128 Kbps
  Maximum bit rate : 8 000 Kbps
  Channel(s) : 2 channels
  Channel positions : Front: L R
  Sampling rate : 48.0 KHz
  Compression mode : Lossy
  Stream size : 157 MiB (3%)
  Language : English
  Tagged date : UTC 2014-07-30 04:09:12
  
  Other #1
  ID : 65536
  Type : Hint
  Format : RTP
  Codec ID : rtp 
  Duration : 2h 51mn
  Encoded date : UTC 2014-07-30 03:58:42
  Tagged date : UTC 2014-07-30 04:09:12
  
  Other #2
  ID : 65537
  Type : Hint
  Format : RTP
  Codec ID : rtp 
  Duration : 2h 51mn
  Encoded date : UTC 2014-07-30 04:09:00
  Tagged date : UTC 2014-07-30 04:09:12
  Bit rate mode : VBR
  

  Final score: Kdenlive Linux seems to have no problem to handle the video correctly.

  Any ideas as to why this is happening?

  I've seen some weird issues with video corrupted files as well as video files that plays somehow sync in media players, but what décimalisé audio and video are not in sync. If you can understand how audio derivatives, as by a percentage and his constant on each clip, you can take the audio from each file and change the rate of creation or one audio editing program.

• 1 problem and 1 Question

  I just got a Sansa discovered refurb 16 GB for Christmas and tried to get some movies on this thing.  Its been a real pain.  I have VOB so Any Video Converter files, I tried and it has lip sync problems.  Tried the settings from here: http://forums.sandisk.com/sansa/board/message?board.id=view&message.id=4413&jump=true#M4413

  and they did not work.  Tried the settings from here: http://forums.sandisk.com/sansa/board/message?board.id=view&thread.id=6068

  and he got the view to play videos but with the lip sync problem.  I tried to change the A / V sync basic, no luck.  video framerate to 29.97 is not an option, only 25 to 30 I think, but certainly not 29.97.

  I have not yet tried formatoz.com, but will probably tonight.  Any suggestions?  I have about 8 hrs a value of time lost so far...

  Now to the question: I have about 5 VOB files by film I would like to transfer and I was wondering whether or not point of view seamlessly pass the 1st mp4 to another.  If not, I'm pretty well, do anyone knows how to convert these 5 VOB files into a single file to be converted to mpeg-4 (mp4), or a shortcut to the 5 files just convert a mp4?

  Thanks in advance.  I usually love challenges, but it becomes a little hand.

  Well, I found a program called "Hand brake" courtesy of lifehacker.

  http://handbrake.fr/

  I think that should do it.  its supposed to be one of the best free programs out there, and you can use it instead of Any Video Converter.

  If for any reason any who does not work for me, I'll use some type of program "Carpenter" to make the case.  Check download.com and type of Carpenter.

• My version of Windows Media Technologies is not compatible with my Windows Vista. Y at - it an upgrade or a solution to this?

  I'm trying to convert VHS to DVD via my computer. I bought an ACQUISITION VIDEO & AUDIO USB card and I'm having the problem. It is coming that my version of Windows Media Technologies is not compatible with my version of Windows (Vista).

  Hi Als01,

  1. which video application do you use to convert?

  First check if the ACQUISITION VIDEO & AUDIO USB card is compatible with Windows vista by using the Compatibility Center.

  http://www.Microsoft.com/Windows/compatibility/Windows-Vista/default.aspx

  If you use any application uninstall and reinstall and check if it works.

  You can also check whether a third-party program is causing the conflict with the application.

  To help resolve the error and other messages, you can start Windows Vista by using a minimal set of drivers and startup programs. This type of boot is known as a "clean boot". A clean boot helps eliminate software conflicts.

  See the link below to learn more about how to clean boot.
  How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
  http://support.Microsoft.com/kb/929135

  Reset the computer to start as usual
  When you are finished troubleshooting, follow these steps to reset the computer to start as usual:
  1. click on Start, type msconfig in the search box and press ENTER.
  2. If you are prompted for an administrator password or for confirmation, type your password, or click continue.
  3. on the general tab, click the Normal startup option, and then click OK.
  4. When you are prompted to restart the computer, click restart.

  I hope this helps!

  Halima S - Microsoft technical support.
  Visit our Microsoft answers feedback Forum and let us know what you think.

• Framerate low when watching Youtube on HTML5 videos in full screen

  Since Firefox makes Youtube videos only play in HTML5, no matter what quality setting that I have video that I look at, when I watch the video on full screen there low framerate. This problem does not occur with other video sites that uses Flash, as shaking, Blip or Dailymotion.

  Is this software is tied to the browser or related material with it being HTML5?

  Automatically search for updates for your graphics card using the above.

• Acquisition of analog and video synchronized

  Hello experts tiara,.

  I am curious about this example Diadem DAC:

  http://zone.NI.com/reference/en-XX/help/370858M-01/explonl/explonl/explonl_dac_video/

  He claims to be able to acquire analog and video synchronized.  Anyone can determine how to properly synchronize these two data flows are?  Because it is a desk, probably Windows machine and no trigger material between video and analog devices, I'm guessing that the two are, at best, on +-1 second.

  Can anyone solve this problem?  I see in the manual use tiara (here) that NEITHER has done some work in order to study how the clocks are accurate in Diadem.  And they even mention a few points of 100 msec.  But I don't really trust this number when it comes to acquiring analog and video data simultaneously.

  Thank you, John

  Hi John,.

  You ask an interesting question, and I had contact with the developer of R & D responsible for this service and received an explanation on his part on the works of this feature.

  The target application for this specific feature is not for use cases where the exact synchronization between the measurement and data acquisition are required (i.e. a crash test of vehicles with more than 1000 frames / second video recording). This feature is implemented for users who wish to have the possibility to use webcams to get insight into what their machine or test do any recoding data at the same time. We should ask this 'parallel acquisition data and video' and not 'synchronous acquisition' - which suggests that it is a way to ensure that the data and the video are actually synchronized during the acquisition process. The original entered German aid system speaks 'parallel' instead of 'synchronous' acquisition, the English translation incorrectly uses the word 'synchronous' instead of 'parallel '. I contacted our documentation team to clarify this part of the help system.

  Accurate synchronization to achieve, especially between multiple streams of data acquisition and a camera, the application must use frame grabber hardware - hardware specifically designed to support the capture video or image.

  This is how DIAdem DAC addresses this type of application, I hope this information is helpful to you and others to this feature:

  Tiara DAC is a top priority on the acquisition and the release of the data to and from data acquisition equipment. The video recording feature is less of a priority and is not controlled by tiara constantly. The video recording process is triggered as closely as possible to the data acquisition process. The current local time stamps of two triggers (data and video) is registered allows us to determine the exact time for the two signals of reading according to DIAdem, i.e. If there is a delay in the start of video recording, is considered for reading in MODE of DIAdem.

  Our tests with made with a camera (not multiple, which is supported by MODE of DIAdem) and data acquisition equipment NOR (not several devices, which is also supported by DIAdem). In these tests, that we have seen the video and data were generally synchronous within some frameworks (no real 100% synchronicity) - which was quite thin which this solution based on USB low-cost camera technology was designed for. It is generally better than +/-1 second depending on the application, but also synchronized to the millisecond like material systems would be able to achieve.

  There are several factors that influence the results of the tests carried out in this area of application: PC hardware (CPU, RAM, disk system), the tasks of measures, other software running on the computer chassis, the camera and the framework, software drivers, etc.. There are too many variables beyond the control of tiara that can influence the synchronicity of the acquisition of data and images based on the software only, so true synchronicity can be achieved using equipment designed for this purpose.

  I hope that clarifies the DIAdem DAC functionality a little better. Thank your for having pointed out the misuse of the book 'synchronous' in the help system, going as fixed for the next release of DIAdem. Please let us know if you have any other questions.

  Best regards

  Otmar

• Data acquisition and video acquisition

  Hi all

  I am a new user of Labview. I am trying to build a VI that synchronize acquisition DAQ voltage of one or more channels to an AVI video acquisition (IMAQ) (including a bayer encoding process), recorderd by a digital camera.

  I built this VI which I attach.

  The problem I have right now is that I am able to do a video and a signal, but the duration of the video is always different from the signal, I can read the time in the file LVM vector.

  Could you please tell me how I can solve this problem?

  Perhaps this question may seem easy, but. As a new user, I know very well how to use Labview in the most effective way.

  Thank you all for your time.

  Emanuele

  Thank you very much, I am modifying the program, but I do not understand how you linked the son two error, I can't find the box you put just before the other 'error' box, please let me know hat it's and what is used.

  Thank you very much four alos your patience.

  Emanuele

• Rotate video from portrait to landscape with framerate strange

  Hello

  I'm turning a video that was shot on a smartphone and which must be rotated 90 degrees.

  I imported the file into Premiere Pro and first said to file a 29,45 fps framerate. I then used the effect controls panel to rotate the video and then use the sequence settings to switch from portrait mode to landscape (1080 x 1920-> 1920 x 1080). In the sequence settings dialog box, I can not select an appropriate time base (appropriate about the framerate of the source of 29,45 fps). It is default to 10 fps, which is obviously not correct and translates into a slow export file. If I use 30 fps (or change the fps clips first to 30 images/s) the resulting file is shorter (so he basically plays back faster).

  Is it possible to turn my video fps 29,45 90 degrees and keep reading speed?

  I also tried brake hand and audio sounds strange with this output file.

  I think I just find the answer myself. It seems that I have to manually use the time base of 30 frames per second. File seems fine, the duration is identical to the original and audio sounds great so the reading.

• acquisition and video recording of the camera

  Hello world

  I developed a VI to acquire and record the video with my camera. For now check in is every time I run the VI but not know that I try to implemant it is able to record video only when I press the button "Save". The first results are good, I can get the video and display it on the screen with or without saving it. I can record the video by pressing the right button while it on the screen. But in the economy, the displayed video is listening (delay, changing color, etc.) and then I opened my .avi file, I had the same problem.

  Do you know where it comes from.

  Sincerely,.

  Julien

  Can you post a snippet/VI where you save it and view operation. Long back, I had the same problem with a video capture of web cam but resolved some how.

• acquisition of video continues

  Hello! I would like to capture video with my firewire camera at ~ 30 fps.

  Registration may be several minutes long, but my memory runns out before arriving at the first minute.

  I'm looking for the best way to buffer than the amount of video on the HDD before recording the final avi.

  I had several ideas on how to do it, but I don't know what would be the best way in the end.

  And if it works another wish would be to have a vi with which you can manage the buffer hd video as if it were in memory (except for speed).

  I'm mainly looking for inspiration, maybe someone has links to screws that can already do or similar work? My research has been without success...

  Thanks to anyone who wants to help!

  Christian Riedel

  I was working on my own. Took time but it works now.

  If someone like some advice on this topic, feel free to PM me.

• Aero Glass problem? saved only in black and white video acquisition card: clolour sceme changed temporarily Aero in Vista Basic: I have Vista home premium, 32-bit

  video capture card via USB to the PC... everything works but only in black and white and info: perpetual sceme changed temporarily Aero in Vista Basic:

  What is the reason why it is black and white?

  .. and if so: how to change? I have Vista home premium, 32-bit system (PC bought in 2007)

  can anyone help?

  Hans

  Hello

  1 have had any changes made on the computer before the show?

  2. who is the manufacturer of the video capture card?

  3. If it works well before?

  4 is the issue limited to the video capture card?

  Method 1:

  Check the link and see if it helps:

  Solve problems with Windows Aero

  http://Windows.Microsoft.com/en-us/Windows-Vista/troubleshoot-problems-with-Windows-Aero

  Method 2:

  I suggest also refer to article and change the theme:

  Change desktop theme

  http://Windows.Microsoft.com/en-us/Windows-Vista/change-desktop-theme

  Method 3:

  I would also suggest update you the graphics drivers on the computer and check if the problem persists.

  Updated a hardware driver that is not working properly

  http://Windows.Microsoft.com/en-us/Windows-Vista/update-a-driver-for-hardware-that-isn ' t-work correctly