Rhewitt
Forum Replies Created
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What’s your budget?
Do you need compatability for DV and DVCAM as well?
Sony do three small format VTRs:
1. HVRM10U – HDV, DV/DVCAM dual size tape. With LCD display and mains/battery power. This is a prosumer model.
2. HVRM15U – HDV, DV/DVCAM dual size tape. No LCD. This is an entry level professional VTR similar to the DSR-15 VTR for DV/DVCAM.
3. HVRM25U – HDV, DV/DVCAM dual size tape with LCD display. This is the professional grade VTR with additional capabilities over the 15U. It is the HDV equivalent to the DSR-25.
There are a range of higher-end VTRs to for full production use rather than just ingest and digital cut.
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Dell and Apple both use LG panels. The early Apple 23″ displays were dreadful – they were all shipped with a pink cast and unevenly coloured rear illumination. The ones shipping now should be better but after being stung myself I would want to see the panels I was buying first before parting with any cash with Apple.
The Dell displays are superb but very bright – they may take some getting used to.
The beauty of the larger panels over 20″ is the space for the timeline can be devoted to one display along with your source/record or comp window and all your bins/folders/effects panels on the other.
You’ll still have the problem of a progessive display and the way that renders your source material. Using an external professional TV LCD for monitoring helps but I would still go for a CRT until the technology matures a little. I’ve seen and used the Sony and Panasonic monitors but my money would still go for a CRT.
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That sort of makes sense. The DVD duplicator is more likely to detect and correct errors it discovers in the master before it burns to the duplicates.
A player has to do this in realtime. Some players are good, some cheap and chearful some will just skip while the better quality ones will try and interpolate across the error.
I remember the early days of CD and DVD players (Philips). Both had ‘error’ LEDs on the front panel which lit each time a data error occurred on the media being played. This functionality was carried forward to most DVD/CD decoder chips but demand from the Movie and Record companys ensured that manufacturers remove the visual indication – I guess so they can get away with poorer/cheaper quality media and boost their profits. Not being synical of course!
I always burn at 2x and have yet to have a DVD fail to playback smoothly.
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Do you have Windows update enabled?
Delayed write errors are reported whenever the OS tries to write to a drive and can’t. The ‘delay’ is a feature in many OS’s to enable more efficient writing to the disk rather than slow the application while a write to disk takes place.
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The solution to this, as always, is the correct level of lighting. It is essential that the ‘talent’ is correctly lit first and foremost. Then the backdrop/key screen should be lit bright enough to enable the chroma key to work but not so much that the green or bluescreen splashes back on the talent. The backdrop should also be evenly lit.
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A couple of things to be aware of:
1. Always check the minimum system requirements with Adobe on their website and readme files. In addition, check the Adobe Premier Pro support forums.
2. 5,400RPM drives are not fast enough for guaranteed video playback even for DV25. Disks should have a rotational speed of 7200 rpm or greater.
3. Some versions of AMD processors are not supported – mostly Athlon XP and MP. AMD’s Turion is a cut down, lower performance version of AMD’s product range and not ideally suited for video editing – HDV is a definite no-no.
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Are you seeing jitter in the whole frame of just on fine horizontal lines?
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Sorry but what is interlaced ? Is mini-DV interlaced?
It must be because you have to select 25i to get to the DV25420 option…In Media Composer you have the option of, among many others, 25P PAL and 25i PAL as well as 24P NTSC and 30i NTSC.
Interlaced is a method used to reduce bandwidth during broadcast. It divides the frame (one complete image) of the TV signal into two fields. The first field with gaps is drawn followed by the second field that fills those gaps. A crude explanation but it’s what is happening.
If you were to select 25i PAL for example then you are selecting the format used for broadcast in the UK and many other countries in Europe as well as Australia and New Zealand. Within this project setting you then have options for the format you wish to import. DV25 420 would be used for PAL DV and DVCAM and DV25 411 for NTSC.
By selecting interlaced as your project setting, all new media and titles will be created in an interlaced form.
DV25P is a progressive format whereby your screen will be drawn in one go from top left to bottom right of the picture, ie. a complete image frame. This gives an inherent sharper image although the screen will re-draw at half the apparent speed of an interlaced image.
Progressive video has another ‘effect’ that many people like to use and that is the similar effect to film shooting where the movement in the image is slightly jerky and not as smooth as an interlaced image. Film usual gets shot at 24 frames per second, very close to the progressive frame rates used in many video cameras with a progressive shooting mode.
When you select a 25i PAL format, you’re specifying the format you intend for output.
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sir should i delete master avi files i capturef through vegas.I can do that if there is no problem on quality. sir i am capturin a dvcam footage shot from a sony hvr z1n camera.
Yes, you are safe to delete the .avi files that were created by Vegas.
and sir if i dont capture them on 1:1 how will quality come same as the original.
There is often a confusion with 1:1. 1:1 means no compression is introduced and is used when the original input source is un-compressed such as composite or component video. Not when inputting video that is already compressed.
DV & DVCAM are already compressed at a ratio of 5:1. When you create a new project in Avid you simply select the format of the original source material. If you select DV/DVCAM PAL or NTSC for your project and capture settings, the video will be captured (brought into Avid) at it’s native resolution (DV25). It will not apply any further compression as it is being captured. This means you can accurately predict how much storage is required, approx 12-minutes per Giga Byte.
There’s nothing to stop you capturing DV/DVCAM at 1:1. It will not increase the quality but it will use five times as much space on your hard drives.
There are, however, advantages of creating titles and effects at 1:1. This is possible on Media Composer and I believe XPress Pro. Your original video won’t change but when creating your titles and any effects such as colour correction they will be created with no compression. This helps prevent the jagged edges you get on title and graphics at DV/DVCAM resolution. When publishing to DVD these will get compressed but they won’t be ‘double compressed’ as the video will be when going from DV/DVCAM to MPEG2.
Hope this helps.
Richard.
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QT is the answer to this. If you have AE on the same system as your media, use the QT Reference or Animation CODEC for the export and same for bringing back into Avid. If you’re using an alpha channel you may need to invert it for Avid/AE compatability.