Gareth, something to be aware of: YT doesn't offer 540p i.e. (960x540) for viewing or downloading. It does support 720p50 and 720p60 (I upload in these all the time) i.e. 1280x720 at 50fps.
So, when you upload 540p50, or 540p25 it's coming back with a max. size being offered of "480" i.e. 854x480 at 25fps. Here's your "Drown" clip on YT showing the formats we can download:
Code: D:\YouTube_dl>youtube-dl.exe -F https://youtu.be/9rwUASkfivc 9rwUASkfivc: Downloading webpage 9rwUASkfivc: Downloading video info webpage 9rwUASkfivc: Extracting video information 9rwUASkfivc: Downloading MPD manifest 9rwUASkfivc: Downloading MPD manifest Available formats for 9rwUASkfivc:format codeextensionresolution note139 m4a audio only DASH audio 49k , m4a_dash container, 48k (22050Hz), 487.66KiB140 m4a audio only DASH audio128k , m4a_dash container, (44100Hz), 1.27MiB160 mp4 256x144 DASH video108k , mp4_dash container, avc1.4d400b, 25fps, video only134 mp4 640x360 DASH video167k , mp4_dash container, avc1.4d401e, 25fps, video only, 753.96KiB133 mp4 426x240 DASH video242k , mp4_dash container, avc1.4d400c, 25fps, video only135 mp4 854x480 DASH video346k , mp4_dash container, avc1.4d401e, 25fps, video only, 1.71MiB17 3gp 176x144 small , mp4v.20.3, 24k, 654.53KiB36 3gp 320x180 small , mp4v.20.3, mp4a.40.2, 2.14MiB18 mp4 640x360 medium , avc1.42001E, 96k, 3.58MiB43 webm 640x360 medium , vp8.0, , 4.57MiB (best) I'd be uploading 720p50 mp4. YT will reencode it (it does that to increase compression and you can't stop it) but you'll still be able to watch and d/l 720p50.
If it looks crappy online, check that your'e not actually looking at a lower res format i.e."480" which is 854x480 at 25fps.If so, switch to "720p50".
Here's the "best" combo of video (f135) and audio (f140) I was able to download:
Code: GeneralComplete name : D:\YouTube_dl\Videos\Testing Video_Audio - Drown (Part of).mp4Format : MPEG-4Format profile : Base MediaCodec ID : isom (isom/iso2/avc1/mp41)File size : 3.00 MiBDuration : 1 min 23 sOverall bit rate : 301 kb/sWriting application : Lavf58.17.100VideoID : 1Format : AVCFormat/Info : Advanced Video CodecFormat profile : Format settings : CABAC / 3 Ref FramesFormat settings, CABAC : YesFormat settings, RefFrames : 3 framesCodec ID : avc1Codec ID/Info : Advanced Video CodingDuration : 1 min 23 sBit rate : 169 kb/sWidth : 854 pixelsHeight : 480 pixelsDisplay aspect ratio : 16:9Frame rate mode : ConstantFrame rate : 25.000 FPSColor space : YUVChroma subsampling : 4:2:0Bit depth : 8 bitsScan type : ProgressiveBits/(Pixel*Frame) : 0.017Stream size : 1.68 MiB (56%)Color range : LimitedColor primaries : BT.601 NTSCTransfer characteristics : BT.601Matrix coefficients : BT.601AudioID : 2Format : AACFormat/Info : Advanced Audio CodecFormat profile : LCCodec ID : mp4a-40-2Duration : 1 min 23 sBit rate mode : ConstantBit rate : 126 kb/sChannel(s) : 2 channelsChannel positions : Front: L RSampling rate : 44.1 kHzFrame rate : 43.066 FPS (1024 SPF)Compression mode : LossyStream size : 1.25 MiB (42%)Language : EnglishDefault : YesAlternate group : 1 See:
Recommended resolution & aspect ratios - Android - YouTube Help
Supported YouTube file formats - YouTube Help
Recommended upload encoding settings - YouTube Help
Dan.
White LEDs are a phosphor-collection that will match candle-to-daylight, so there is plenty of choice.... however, whilst halogens do get very-hot, for the amount of light, they can't be beaten ( yet!).... as £20 will buy you an LED equ of about 60W, which at 12v is drawing 5A - that will kill most batteries very quickly.
Pros use the HD battery-packs that will last a couple of hours if yr lucky... but these packs are mighty expensive,
Fortunately many LED light-units can be powered from a mains-pack.... but to power a 60W LED would be quite a power-pack.
Those multi-LED camera-lights are good for those special situations - but light on-camera is rarely satisfactory, unless the camera and actors are static.
With modern Sensors being so much more forgiving - and the added benefit of shallow DoF ( for portraiture/ interviews), the need for strong lighting is less-so.
However, if you can stand the heat (!), then halogens are probably be best source and are genuine continuous spectrum - which LEDs aren't and LED's give a scene a "certain look".You see this in street-lighting.
Those old "photo-lighting" units ( now despised?) feature a Wide-Spot adjustment to change the beam-angle . . . however,their bulbs are pricey, whereas Builder-Halogens, whilst rising, are still about £3 each. Halogens should be switched-off for minimum 5 mins before handling . . .and don't move them when lit.
Pros will only use LEDs from now-on... but they have an "Image" to maintain and their Kit is tax-deductible.
Cheers....
Harry you should be aware that the 60 watt is a tungsten equivalent. LEDs take nothing like that. My whole house is fitted with LED bulbs of 100W equivalent but the actual electrical rating is 15W
The two Neewer 308C lights will run off their Sony batteries for about 10 hours. I have used them when we have had the occasional power cut. I also use 12V battery packs using 8 AA batteries.
I think you need to re-assess the benefits of LEDs based on proper experience.
The Neewer 308C has two sets of LED's at different colour temperatures (fairly typical of LED video lights) with variable intensity. One set is at 5600K and the other at 3300K and I can mix between the two limits.