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Patrick Cooper

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  1. Today, in my family's kitchen, I discovered a large glass bowl tucked away in a cupboard which has a nice curvey shape. Very deep too. It looks roughly about 50cm in diameter or close to that. I think this thing has potential.
  2. You do see satellite dishes on the occasional roof here in Australian suburbs. Though I don't think Ive ever seen one in thrift stores or garage sales. The only scond hand ones Ive seen have been on eBay. Yea those solar cookers are really tempting. And I see some of them are reasonably priced. Though the only possible downside with them is that I notice the focal point is often outside of the dish. And obviously with sound recording, it would be preferable to have the focal point inside the dish to protect against wind noise and other extraneous sounds. Though I guess that's always a risk with adapting any item for this kind of application. There's always the chance that the focal point could be outside of the dish. I'm not sure of the maths involved for working out the focal point for any random curved object. I guess it's a combination of the diameter and the depth.
  3. Thanks for the replies and suggestions. There is a youtube videos which shows someone testing their cardboard parabolic dish. The guy did a comparison test with and without the dish (recording audio of white noise.) And there was a very noticeable boost in amplification with the cardboard dish vs without. I'm not sure about the presence of low frequencies with that kind of sound source. Though yea harder material would be even better, I would imagine. The fibreglass suggestion sounds like a good one. Ive actually never worked with this stuff before. Is it straight forward to apply? Yea I would need a mold of some kind. There was another guy on youtube who used a mound of rocks and then layed cement over that and shaped it.Probably overkill. I wonder if I could use clay instead though that would probably require a huge amount of clay. The yoga exercise ball is also a good idea.
  4. I'm thinking of getting hold of a parabolic dish for recording the sounds of nature outdoors like bird calls. Though instead of purchasing a commercially made one, I'd like to go the low budget DIY route and obtain a cheap house old item that has the same basic shape and convert that. I thought locating such an item would be quite easy but I'm having a hard time finding something suitable. Ive spent ages looking on eBay and although Ive found a number of items on there that have the shape of a parabolic dish, they are all very small. The largest one I found was a lid for a kitchen pot but it was only 40cm in diameter. Ive also considered trash can lids but they tend to be cone shaped rather than curved. Any suggestions for other items to look out for that would do the job? I am in Australia by the way so there might be some things here available here that could be suitable. Ive also looked at second hand satellite dishes on eBay but a lot of them are not very deep and in some cases, almost flat. Plus many are sold interstate and are 'pick-up only' with regards to payment transactions. If all else fails, I could try making a parabolic dish out of thick cardboard though obviously, that wouldn't be as good as one made of stiffer / harder material. I would probably use an omnidirectional microphone with it.
  5. Thanks for the recommendation for the Rode Smartlav+. Judging from a youtube video I watched, it looks like it performs well outdoors amidst background noise. So should be even better in a parabolic dish. Ive also seen some other attractive options that are cheaper than the Rode. Yea I know a tablet is going to be awkward at times. Though it will be used for fairly basic stuff (mostly nature sounds.) Though with regards to bird calls, I'm just hoping that the feathered animal would remain singing for a decent duration. I could visualise that a fair amount of time would be spent fiddling with the recording app (adjusting levels etc) before I actually start recording.
  6. By the way, Ive also been intrigued with the idea of using a microphone with XLR attachment and connecting it to a tablet or similar device with an XLR to 3.5mm adapter. Though do some of these kinds of mics have additional power requirements or something like that? I thought I recall reading about that. Correct me if I'm wrong.
  7. Great suggestion. I didn't consider that. I think it's something like a micro usb or something like that - I wonder how common omni mics are with that kind of usb. I guess usb adapters are available but they don't always seem to work for me.
  8. I'm considering using a Samsung Tab 3 for recording audio of bird calls out in the wilderness. I just hope I can get hold of a good app that allows manual adjustment of levels and recording to formats like Flac or WAV etc. I plan to make a parabolic dish (or adapt something already existing that has the basic shape and size) and use an omni-directional microphone with it. I would also like to use headphones to help monitor the sound. Though here's my dilemma. There is only one 3.5mm jack on this tablet. Is there some way that I could connect headphones and microphone simultaneously? I admit I don't know much about audio and what kind of options are available. I don't suppose there would be something like a splitter cable that would allow two different devices to be connected?
  9. Oh yea I realise I'm overdue for a new computer. When the budget allows, I would like to get a new and reasonably powerful pc one day.
  10. And Ive just hit a hurdle with Davinci Resolve. Apparently, the version I downloaded is 64bit and my computer uses a 32bit system so they're incompatible. I could only see one version for Windows so I guess that's all there is. Don't ask me why I'm using an ancient 32bit system. Someone who claims to be a computer expert installed it on my pc (even though I told him beforehand that I was planning to edit HD video.) At the time, I didn't realise that 32bit systems are limited to 4GB of RAM. Another family member has a laptop which uses 64bit. I could ask her if it's okay to install Resolve on her machine.
  11. Actually, I do have another query about Davinci Resolve's export options. From what Ive noticed in tutorial videos, I can't see any way of selecting progressive or interlaced. I would prefer progressive video with my exports. How would you know for sure that the video is being exported as progressive?
  12. Ah good to know and that makes things convenient. I thought I recall someone mentioning on another forum about manually selecting a high bitrate when using ProRes (unless I'm mistaken.)
  13. Thank you for that linked article. I note that the bitrate for 4096 x 1260 at 24p for ProRes 422 is 503 mb/s. If I was exporting Panasonic G7 4096 x 1260 24p footage with the ProRes 422 codec in Resolve, would I set the bitrate to 503 mb/s or some other amount?
  14. Tyler yes, good points. Jordan, I have a Pansonic G7 rather than a GH7. I'm not even aware that they came out with a GH7 in the GH line. Though yes, it has a bitrate of 100mbps. All stock videos submitted to the online agencies are trimmed and exported with NLE software and many of the clips have some colour grading applied. I will likely be using Davinci Resolve to export my next bunch of clips. I haven't used this particular software before (I'm currently going through tutorial videos) so I'm not 100% sure on what choices of codecs it has. Though from memory, I think it may offer PhotoJpeg. I don't know if ProRes has been added or not. Though I'm still not sure how much I should increase the bitrate with ProRes or PhotoJpeg when exporting my videos. Would it be recommended to double or triple the bitrate in my source footage or use some other formula for working it out?
  15. The reason why I'm attracted to using codecs like Prores and PhotoJpeg is because I shoot stock footage. And some people reckon that using such codecs as these can increase the chances of sales on a clip. Supposedly, with h264, editors are very limited with the grading that they can apply to a clip whereas with codecs like Prores and PhotoJpeg, they have a lot more flexibility in what they can do without worrying as much about the quality dropping off or artifacts emerging. Well that's what I keep hearing from the stock footage community. Stock videos with Prores and PhotoJpeg are apparently more attractive to buyers. Though I admit Ive had some decent sales with clips that used h264. So regarding the bitrate that you would use with Prores and PhotoJpeg, you're confirming that this should be set higher than that of the source footage? Yea it would be good to know if there was some simple formula for working out how much to increase it by. For the people who do use these kinds of codecs, I wonder how they calculate this.
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