Pix 220/240 Firmware 1.05

Thanks very much. Very kind of you to try to help. I will give that a try. Re-sampling audio was something I wished to avoid, but it looks like it might be the only choice. The other choice is to scrap all the PIX footage and Audio and just go with the SXS cards back up which is flawless on sync, but of course defeats the purpose of recording to the PIX. SD has the issue fixed in the latest updates but I need to get out of this jam for our long interviews and use the PIX footage if possible. I tried a program called Dual Eyes by the same company that makes Plural Eyes but had no luck with that solution.
 
SquareDealPro said:
Thanks very much. Very kind of you to try to help. I will give that a try. Re-sampling audio was something I wished to avoid, but it looks like it might be the only choice. The other choice is to scrap all the PIX footage and Audio and just go with the SXS cards back up which is flawless on sync, but of course defeats the purpose of recording to the PIX. SD has the issue fixed in the latest updates but I need to get out of this jam for our long interviews and use the PIX footage if possible. I tried a program called Dual Eyes by the same company that makes Plural Eyes but had no luck with that solution.
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Resampling without pitch change is not really damaging audio that much at all. It's pitch correction which is very difficult and leaves artefacts. In case of 0.1% adjustment you can do it without any worries.
 
QtSync Screen Grab Sync Drift correct.jpg

I think you are right there. Had some help from Dror Lahat who suggested not to offset the audio but rather increase it over time like you suggested. Went back and re-tried QtSync which is a free program found here: http://www.qtsync.com/qtsync.php This seemed to do the trick and was able to get it close from the beginning to the end of the interviews affected.

Using QtSync, set the DURATION values and "arming" the two audio channels for "17 frames," for an interview which went 59:57 minutes/frames. In a shorter interview of 27:05:12 minutes/seconds/frames it was 10.5 frames. t would be nice to get an exact formula as one has to guess and experiment until it looks and feels right on sync. Perhaps SD's engineers might help there. I was told they are looking into this, and may have an answers for those impacted soon. But for anyone struck by the same problem I suggest you try this QtSync method.

Initially, I entered the values in QtSync using the offset window at the top and could only get sync that way by breaking everything down into 3 minute segments. Not sure what the bug is, Sound Designs seemed to indicate it was something to do with the way the PIX interpreted PsF while converting to 23.98 using the PIX scaler, and recording that result to the SSD. Here's what Dror said he believes the bug is (or was now that SD has corrected the bug in anything from 1.07 update up):

"Remember that audio has no frames. Also, I eventually realized that the PIX wasn't adding frames to the video; the PIX has no capability for buffering like that, nor can it predict signal it hasn't received yet. What was the likely cause for the bug was inaccurate framerate (speed) metadata in the QT, at the Quicktime Atom level or something. I think the audio played correctly at 48,000 samples per second (or whatever audio settings were), but the video ran at 23.98fps instead of 23.976fps."


Everything we shot with the Mini KiPro was fine, but our long interviews the PIX stuff was alarming when we discovered the sync problems. We chose the PIX because, using large capacity SSD's, we did not have to interrupt our interviews to change (very expensive low capacity) CF cards. Certainly it's fantastic QtSync could do this, when the paying programs I tried failed. The pic attached shows where I entered the values. You have to play with it a bit to figure out how many frames to enter when setting the "Duration" for both audio tracks. It depends on the the length of the interviews. The longer the interview the larger amount of frames you enter but you have to experiment with the number and just watch closely to see if the interviews are syncing with the lip movements.
 
For those in need of fixing your sync issues due the PIX 240 pre update 1.07 long recordings using a F3 coupled with a PIX 240 recorder, outputting 24 psf from the camera, here is what the author of QTsync offers as a solution. The program can address numerous types of sync issues and its free. Great thanks to Michael for his generosity and help with this:

"removing a frame of video" means that the video has to run quicker. This can be achieved by using the "Duration" selectors. (If the duration is shorter, the track has to run quicker.)


In the QT Sync "Track Selector" Window (the window that opens above the video) select "Show as Frames" and "Total".
The duration of all tracks will now be displayed ( in frames ).


Let''s assume you have 25 fps and a 10 minute video, the duration will be shown as 15000. ( Total number of frames )
in case of 23,976 fps and a 10 minute video, the duration will be 14386.


Lets call this value "A".


you will have to do a little bit of math here: (don't worry, its easy ;-) )
How many frames do you want to "remove" from the video in total ? (In other words: How long is you video ?)
If its only 3 minutes long you want to remove 1 frame.
If its 30 minutes you want to remove 10 frames (1 frame every 3 minutes)


Let's call this value "B".


Now lets do A - B. (Total number of frames in your movie MINUS Number of Frames you want to remove from the movie).
Enter this new number into the Duration box of the video track AND PRESS ENTER.


Let me know if this helped you.
 
QTSync seems to help if not completely fix this. Seems it might be similar to Adobe Audition.

For those in need of fixing your sync issues due the PIX 240 pre update 1.07 long recordings using a F3 coupled with a PIX 240 recorder, outputting 24 psf from the camera and converting to 24p on the Pix, here is what the author of QTsync offers as a solution. The program can address numerous types of sync issues and its free. Great thanks to Michael for his generosity and help with this:

"removing a frame of video" means that the video has to run quicker. This can be achieved by using the "Duration" selectors. (If the duration is shorter, the track has to run quicker.)


In the QT Sync "Track Selector" Window (the window that opens above the video) select "Show as Frames" and "Total".
The duration of all tracks will now be displayed ( in frames ).


Let''s assume you have 25 fps and a 10 minute video, the duration will be shown as 15000. ( Total number of frames )
in case of 23,976 fps and a 10 minute video, the duration will be 14386.


Lets call this value "A".


you will have to do a little bit of math here: (don't worry, its easy ;-) )
How many frames do you want to "remove" from the video in total ? (In other words: How long is you video ?)
If its only 3 minutes long you want to remove 1 frame.
If its 30 minutes you want to remove 10 frames (1 frame every 3 minutes)


Let's call this value "B".


Now lets do A - B. (Total number of frames in your movie MINUS Number of Frames you want to remove from the movie).
Enter this new number into the Duration box of the video track AND PRESS ENTER.


Let me know if this helped you.
 
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