Rennie Klymyk
Forum Replies Created
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I’ve had this audio issue before too but it’s been a while.
I just wanted to add some thought about DV vs DVCAM. DVCAM moves the tape 33% faster past the heads. The head drum doesn’t go any faster and it’s angle doesn’t change but we get 15micron pitch as opposed to a 10 micron pitch on the same tape. When the helical scanning heads make a swipe on the tape a skewed retangular shape is written to the tape. If you viewed it vertically you would see a series of skewed retangles one above the other in which the right side was higher than the left side. Before one skewed square ends on the bottom left of the pattern the next swipe of the heads begins on the right so there is no space on the tape between these patterns perpendicularly . With dv footage this overlap is miniscule but on dvcam these squares of data are longer in shape because the tape is moving faster as the drum spins and the heads lay down the data. This results in more overlap of these patterns so as the play heads later read this data it is reading the new skewed square (head swipe) at the same time it is finishing the previous one. This is why locked audio is possible on dvcam and why dvcpro 25 (18 micron pitch) decks can scrub video and audio faster than dvcam. When mini dv came out we got betacam sp quality (1/2″ tape) on a tiny 1/4″ tape that recorded an hour. Tolerances were tight.
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There’s an AJA IO for sale in cow classified right now for $1000.00. Just plug it into your firewire and you’re good to go.
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[John Davidson (fomerly JNeo25)] “Way to go Panasonic. Not one single store listed on the Panny website carries any p2 cards in stock. B&H photo is out, Promax is backordered, Studio Exchange (the guys that sold me this camera) is out, Samy’s in Venice won’t sell it without buying the camera, every shop I hit in Burbank was out.”
Glad you got one but you can’t blame the resellers for not stocking something that is going to drop in resale value by at least 50% in a couple weeks. Inventory can kill a business and in this age of the “information hwy” most of us will put off buying till the new stuff arrives supposedly at NAB.
I know in your case when you need it you need it and the job should justify the expense for you. They will drop in resale value but not in actual value. Your 8 Gb card will replace many many rolls of tape in the next few years. -
Is there a link to this info? I couldn’t find anything on it at panasonic.com. A google turned up this from march 5th. which indicates they will unviel? the 16gb card but still slates the 32 for the end of 2007.
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[Rich Rubasch] “Hold the press! If the Sony Playstation3 can play back H264 and VC-1, and it can play back regular DVD’s them why in the world couldnt you just burn an h264 to a DVD-ROM disk? I assume there is a way to format the disc so the Playstation can read it. All it has to do is be able to read the disc directory and see it has a file that it supports”
Yes, there’s no big revolution with blue ray, just a different laser and media. Sony’s burners ship with free sw for burning although i’ve heard there are probs with it. There are other burning solutions surfacing too but not for mac yet.
other BR authoring apps are:
moviefactory Plus $500.00ish
Blu-print$50,000.00
Sony’s Blu-print competes with Scenarist but it appears to be software only. I think Sonic still gives you hardsware encoders at least. What gets me is these are designed around windows XP pro. This reminds me of the 1st pc video editors that needed windows NT. They kept NT alive, while the server world and joe public went on to windows 98 and 2000. NT remained a backbone for editing platforms. Sooner or later SS (sonic and sony) will have to write it for vista and then maybe they’ll realise that is a lot like OS10. Maybe then they will support mac too. Although I guess if you are dropping 50K on authoring sw another 5K for a box and OS to run it is no biggie.Blue ray will use a new java architecture that allows dropdown/pop-up menus and other as yet unseen features to the dvd world. Small original content producers will have to be content providing files to authoring houses if they want the fancy stuff. We won’t have to wait long I’m sure till software makers catch up and these prices come down. The 1st dvd authoring programs were 120K (Daikon) and now look what we can get for $400.00!
I’m hoping Apple will pull a rabbit out of a hat with dvdsp at NAB.Who knows, maybe next year the world will be watching Hi Def from holographic chips.
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Try posting in FCP Basics forum.
Try playing it without the audio, FCP likes 48KHZ audio in .aif.
Play it out of the camera through the video jacks and record onto a dv deck.
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Sony’s first release was Mpeg-2 only but it currently supports:
Video encoding is Mpeg-2 (primarily menus) H.264 (Ta Daaaa!) and VC-1 (smpte version of windows Media Player 9).
Audio encoding is Dolby Digital AC-3, DTS, and linear PCM (up to 7.1 channels).
BR supports 1920
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I would display audio waveforms in the timeline. If right track has audio but not the left track, delete the left track and copy/paste the right track there and vice versa.
Contact the band as there was probably a live recording made from the mixing board at the time of the performance. Get a copy of that for the music portions. If that is the cd you refer to it should be at least stereo and should be used where ever possible.
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Mpeg1 was the 1st mpeg format and was designed to achieve a 352×240@1,5mb/s data rate(25fps). It does however support resolutions up to 4095×4095. Mpeg 2,4, 21 etc. are all improvements to this forerunner and are much more sophisticated and complex. It is used primariliy for video cd. It is the most compatible mpeg format and should play in most dvd players. It is typically vhs quality. Try playing in a dvd player and dubbing to your dv deck with the video out connections. You may find that your dvd player decodes it and plays it out as video better than a program like steamclip will convert it. Keep in mind when trans-coding files Mpeg 1 is PROGRESSIVE ONLY. You may find a pal dvd player does the best job. Decoders in dvd players are not all equall. Some lean toward dvix, others video cd etc. You could go to a retailer and try it in different players. (you may recall when dvd-r and dvd+r discs came out and burners became affordable, not all dvd players on the market would play them)
Although I don’t recall ever making a video cd, my MediaPress Pro system can produce Mpeg1 files with almost as much control as mpeg2 files. Bit rate, VBR bitrate; GOP pattern, size, structure are all variable and formats in 1:1; 4:3 and 16:9 are available. There were tons of movies distributed in this format throughout Asia around the turn of the century.
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Are you capturing through av connections or transfering files via usb or firewire? You could try importing audio into itunes and then exporting to fcp as aif.