I get lots of inquiries about making regular DVDs from High Definition material. Hopefully from now on I can respond to those questions with a link to this post. There are two aspects of the downconvert process that cause quality problems if not handled correctly. First is the interlacing problem. Even if both HD and SD were lower field first, there would still be issues, but the fact that HD and HDV are upper field first at 1080i, makes the potential problems even more obvious if not processed correctly. Scaling normally averages adjacent pixels, but in interlaced video, each alternating pixel line represents a slightly different slice of time, so scaling a whole frame without accounting for this difference will never lead to good results. One application that gives you the level of the control you need, to ensure that this process is handled correctly, is Adobe After Effects. By properly interpreting the source footage, and enabling the field rendering option in the render que, you can ensure that smooth motion in your video is maintained through the down conversion process. Essentially 1080i30 footage is really 60 frames of 540p footage, that needs to be scaled to 240p for 60 discrete images, and then reinterlaced to 480i30 for SD viewing on DVD.
Continue reading
Adobe has just started shipping their CS4 line of products, which coincides with an announcement from NVidia, that their new Quadro CX Graphics card is optimized to accelerate CS4 via the CUDA interface.
Adobe has added many minor tweaks and improvements to all of their apps in CS4. My favorite so far would be the new Adobe Media Encoder, which allows you to render and encode Premiere Pro and After Effects sequences in the background, while you continue to work in the applications themselves. This should help finally utilize all those extra CPU cores we all have buried in our systems. There is also supposed to be more support for 64bit processing, especially in Photoshop. The speech to text engine and enhanced dynamic link are the other features Adobe has been highlighting, but I don’t have as much use for those personally. One thing that has been made clear by third parties, is that Premiere Pro is not finished, and that we should expect a major update soon. I am not sure which details of that have been made public, but until that release, most third party extensions of Premiere will not be compatible with CS4. Specifically I am awaiting support from Cineform for ProspectHD/4K, and from Matrox for the AXIO line of products. Both companies have stated that their software will require support from the extended SDK in the update, so stay tuned for any news on that from Adobe in the near future.
Continue reading
It has been quite a while, but I hope to get back into the habit of posting regularly, now that I have returned to Hollywood. A few items of interest have surfaced while I have been away. Many products that were announced at NAB have finally begun to ship to customers, and we are seeing how they hold up in real production environments.
Continue reading
As much as it may seem like it, I have not totally abandoned this site. I have been very busy recently, and will continue to be occupied elsewhere for the next 3 months or so. Once that is complete and I return to Southern California, I hope to have time to continue extending the content on this website. In the meantime, here are a few things I have come across recently that are of interest.
Continue reading
I finally got a chance to explore the rest of the show today, and found a few more interesting newly released products.
Panasonic has released a number of new camcorders. They have three lines of solid-state recording: AVC-Intra to P2 Cards, DVCPro-HD to P2 Cards, and AVCHD to SDHC cards. At the upper end, the new HPX3700 and HPX2700 both record 10bit 4:2:2 to P2 in AVC Intra. Both support “Varicam” variable framerate options at 1080p, and the top of the line HPX3700 model also has Dual-Link 4:4:4 RGB output capability. In the prosumer market, three cameras that I would describe as variations to the HVX200 have been released. All have 3 1/3″ CCDs, and have the same basis shape look of the original. The updated HVX200A has improve optics and sensor, as well as the addition of an HD-SDI output. The lower cost HPX-170 removes the outdated SD-MiniDV tape option option, allowing only P2 recording. Lastly, the HMC-150 is similar in physical formfactor, but record to SDHC cards in the AVCHD codec, at much lower bitrates. The other two options in the new professional AVCHD line are the shoulder mount HMC-70 and the 1 lb, 3CCD, HV30 competitor, the HSC1U.
Continue reading
I am jumping straight to Day 3, since Day 2 was rather uneventful, although I did attend the AJA party last night, which was quite the experience.
I have come across fewer items of interest since my last post, but there are a couple. Canon released two new revisions of their original HDV camera, the XL-H1. The XL-H1S is just a slightly improved version of the original, while the XL-H1A is the lower cost option without the profesional level SDI outputs.
Sony has a few other new releases. The SRW-5100 a new lower cost HDCam-SR ingest option. This will allow you to read tapes shot with the new F35, Sony’s new Genesis level, single sensor 35mm replacement camera. They also have a new 42″ addition to their Trimaster series, the BVM-L420. Also on display was an SxS recording option for the new PDW-700, allowing you to store 50Mbs MPEG2-422 to solid state.
Convergent Design showed their XBR, an SDI recording device that stores MPEG2 on CompactFlash cards. It is much larger than I anticipated, but a smaller model should be soon to follow.
One last NAB installment to come after tomorrow, when I hope to get a chance to explore the Panasonic and JVC booths, among other in the Central Hall.
So the NAB exhibition opened to the public today, and I spent the majority of the day at my post as a demo artist for Cineform. Honestly the day seemed to go by much more quickly than I anticipated. I did get a chance to look over a few other booths, and noticed a couple items of interest.
Blackmagic has a number of new mini-convertors for analog component HD, HDMI, and HD-SDI, as well as an updated and expanded Video hub. The new “Broadcast” Video Hub is in a whole new category, increasing sixfold from 12×24 to 72×144 inputs/outputs, while adding support for 3Gb SDI. They also released the BlackMagic Video Recorder, a micro sized H264-encoding HD capture device that offers component HD, and optionally SDI input, connected via USB.
Adobe has released another update for Premiere Pro CS3, so now we are at 3.2.0. Among other smaller items, this update adds native support for XDCam-HD, and XDCam-EX, in all standard formats. Adobe was much quicker to support Sony’s SxS solid state recording format than they were Panasonic’s P2 solid state format that had been out for two years. On that note, I personally prefer the Sony varient for a number of reasons: modern ExpressCard interface, high transfer rate, 1080p cameras, etc. Now we just need larger and much cheaper SxS cards.
Although I have yet to personally make it to that hall, I hear that Sony has a couple of cool new toys. The PMW-EX3 extends their XDCam-EX line with a second model that adds support for interchangable lenses, capable of interfacing its 1/2″ imager with both 1/2″ and 2/3″ HD lenses. There is also an XDCam-EX VTR, the EX30, which I anticipated was coming, but it seems that it is physically larger than I was hoping. The EX format lends itself well to the creation of a small scale HD-SDI recording and playback device, which would pair well with a tiny HD-SDI camera. They also seem to have finally finished their new XDCam-HD camera that records their new MPEG2-422 format to XD. I expect that new 50Mb/s XDCam format will eventually be a broadcast HDCam replacement. No 24p support there, so I won’t be using that format for a while, but we have seen that pattern before, and it will arrive eventually.
Red also released details on their future products, but they aren’t due out until early 2009, so I will discuss those at a later date.
NAB is coming up in a little over a week, which should stir up a lot more news than we have had for a while. I have been quite busy recently, but even if I hadn’t been, not much worth posting has come up recently.
I am also involved in a shoot this weekend using both the Red One and the Sony EX1 for the first time, so that should provide some good info to write about. So stay tuned, as I plan to resume posting regularly pretty soon.
If you reside in the Southern California area and have a strong interest in the topics discussed on this site, I may have an opportunity for you. My primary employer, Bandito Brothers, is looking for post-production interns. These position would include assistant editor work, as well as many other media production related tasks. We are looking for people with an interest in, and at least minimal experience in a variety of tasks, possibly including: editing, audio post, motion graphics, VFX, encoding, Flash, web design and programming, disc authoring, file management, PC troubleshooting, and other tech work. We are a company that primarily uses Adobe products, so experience with those applications is required. Mac experience is great, but you will really need to be a PC person to survive in this position. Do your friends come to you with their technical problems? Because that is the type of person we are looking for. The positions would be well suited for someone in college, and ideally we would like to find someone who was looking to make it a summer job (we would be paying them by that point). If you are from the area and want to work at a company that is on the cutting edge of technology, send me an email at mikemccarthy@hd4pc.com with your resume or reel or portfolio or whatever you’ve got.
Nothing overhelmingly interesting has been released recently. Everyone must be saving up the good news for NAB or something. I have been keeping busy, so I haven’t had time to run any thorough set of benchmarks on my new system. After much frusteration and delay, I did successfully get Windows XP Pro 64-bit edition installed though. I have never had more trouble with an OS install before, between Raid drivers and SATA Optical drive booting issues it took like two weeks to get it right. Now when I get all eight threads rendering in AE CS3, the lights dim and my UPS starts beeping. I don’t know whether to be thrilled at the computing power or disappointed at my electrical power, or both really. Once I get some time I will get a new UPS and max out the system for a while. It the mean time, Company of Heros gets great frame-rates.
Continue reading