It all depends on what you intend to do with the captured file.
Suppose you want to capture a file and then just convert it straight into a DVD without any cuts.
Not condoning any form of piracy just using TV programs as an example.
To create a DVD your video at some point must be converted to MPEG.
You record something from BBC that has no adverts. You could record straight to MPEG.
On the other hand you record something from one of the commercial TV stations that includes adverts. You want to take the adverts out.
Here you would have to record to AVI. Do your editing and then convert to MPEG.
Say you have some old Super 8 cine film that has no sound. You decide to project the film onto a screen and video it. You intend to later add your own soundtrack. You "could" capture straight to MPEG as the sound would be added later. I only use this as an illustration, I have just captured a whole lot of super 8 film, but I intended to do a lot of picture adjustments - brightness, contrast etc and so obviously I captured to AVI.
When deciding whether to capture to MPEG or AVI you have to decide in advance what your intentions are. It does take even the most powerful computers some considerable time to convert from AVI to MPEG.
Going back to my earlier comparison to ordinary still photographs, that is exactly what takes place when you convert an AVI to an MPEG. The PAL system utilises 25 picture frames every second so imagine how many picture frames would be contained in a 1 hour video, all of which have to be individually compressed. The NTSC system have even more at just under 30 frames per second.
ULead: you lost a customer, you need to fix the bugs
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dvest
Try PVAStrumento. I had sync problems with some of my videos after editing. After using this software to make a new file by choosing "Make PS" and using VideoReDo for editing I don't have the problem anymore. I then burn build the DVD files and burn them with Moviefactory. You can download a trial of VideoReDo from http://videoredo.com/ - PVAStrumento is free and you can get it from :
http://www.offeryn.de/pvas_2_1.htm
Here's a brief description of it:
"During the last years PVAStrumento involved into a converter that also fixes MPEG2 PS, because newer software for DVB cards generate MPEG2 PS directly and some other applications just generate MPEG2 PS that are not so very well suited for further processing... Due to the process of hardware MPEG2 encoding, audio and video may start at a different PTS or some frames may be lost during the recording. You will not notice this when playing back the recording, the PTS info present in the MPEG2 PS will guarantee that video and audio will be presented at the correct time, even with frames missing.
But once you try to author a DVD with such a recording most authoring programs just drop the PTS making the result A/V asynch. So even with an MPEG2 recording from MPEG2 encoder boards, your best bet still is to run PVAStrumento on such a recording before producing a DVD or XSVCD."
http://www.offeryn.de/pvas_2_1.htm
Here's a brief description of it:
"During the last years PVAStrumento involved into a converter that also fixes MPEG2 PS, because newer software for DVB cards generate MPEG2 PS directly and some other applications just generate MPEG2 PS that are not so very well suited for further processing... Due to the process of hardware MPEG2 encoding, audio and video may start at a different PTS or some frames may be lost during the recording. You will not notice this when playing back the recording, the PTS info present in the MPEG2 PS will guarantee that video and audio will be presented at the correct time, even with frames missing.
But once you try to author a DVD with such a recording most authoring programs just drop the PTS making the result A/V asynch. So even with an MPEG2 recording from MPEG2 encoder boards, your best bet still is to run PVAStrumento on such a recording before producing a DVD or XSVCD."
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rdsatkaycee
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dvest
With earlier versions of VideoReDo I occasionally had sync problems using it alone. With the latest version I've used it alone without sync problems so far.
But if you want to play it safe it doesn't take long to use PVAStrumento. Also seems like I remember a time or two when the video edited with VideoReDo was in sync but then when the files for the DVD were made and burned in MF3 they were slightly out of sync on the disc. Running them through PVAStrumento first solved that problem. But like I said with the latest version of VideoReDo I've not had a problem. It's a great editor - one of the quickest and easiest out there in my opinion. Well worth the cost. Also has auto commercial detection now.
But if you want to play it safe it doesn't take long to use PVAStrumento. Also seems like I remember a time or two when the video edited with VideoReDo was in sync but then when the files for the DVD were made and burned in MF3 they were slightly out of sync on the disc. Running them through PVAStrumento first solved that problem. But like I said with the latest version of VideoReDo I've not had a problem. It's a great editor - one of the quickest and easiest out there in my opinion. Well worth the cost. Also has auto commercial detection now.
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skier-hughes
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Not knowing how this original was captured, but if analogue video is captured via the graphics card (or any second source) for video and the sound card for audio, you can get OOS because the two cards often use different clock cycles in producing the end result.
This should show up in any captured files though, but is sometimes magnified after editing.
This should show up in any captured files though, but is sometimes magnified after editing.