Tag Archive | "video"

Samsung Galaxy Camera 7 Minute Hands-On Video

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I get into the user interface in this demo of the Samsung Galaxy Camera from Photokina in Koeln and give you a walk round of the device. I have some sample photos for the next post.

Samsung Galaxy Camera (4)

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Floating Lens Technology Debuts in Nokia Lumia 920

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I posted just half an hour ago on Google Plus…

“Stabilisation is a huge challenge for cameraphones because there’s not enough processing power to do it well enough in software and no room for optical stabilisation.”

Nokia may have solved the problem with “Floating Lens Technology” on the Nokia Lumia 920.

920

Technical details are unavailable right now but I’m excited to see that as it will a) allow slower shutter speeds (more light) b) reduce the need for xenon flash to freeze motion c) allow for longer zoom d) reduce video bitrates.

Update: Specifications and details are here.

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Fast 480p Video Blog using N8 and Tab

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This is a demo video and demo blog.

Video recorded, produced, uploaded from the Nokia N8. Embed code grabbed by ‘share’ing the embed code from the YouTube app. to the WordPress app on the Samsung Galaxy Tab. Photo sent from N8 to Tab via Bluetooth and then embedded in the post.It’s a simple, quick process.

Total tIme to record, edit, upload and write post is under 10 minutes [correction. Its was closer to 15 minutes] which is fast for a single-man setup of 570gms and about €650. All-day battery life too! Let me know what you think about the quality of the video. Is it good enough for a first hands-on demo?

New Personal Project – The Best Mobile Video Editing Kit. (For YouTube)

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Is it the iphone4? A netbook? Honeycomb on a quad core tablet? Or is it going require 2kg of Windows laptop?

I’m on a mission to find a way to improve the video setup I use for my YouTube posts while retaining mobility.

I currently record in VGA using the mjpeg format at well over 10mbps. The results are smooth and free of common artefacts . The mjpeg format is also easy to chop around because there’s no frame-frame compression. With a fast ssd and 2Gb of ram its easy to work on, say, a 15 minute long set of clips. Encoding to 2mbps in WMV knocks the size down and ensures a reasonable HQ experience in YouTube. It works well.

The problem is that VGA, while perfectly good with a touch of zoom for details, isn’t acceptable any more. 4:3 is out! For YouTube sake, I need to move to 16:9 which means a minimum of 480p. That’s about 40% more bits of information per frame (and very little extra value to the viewer.) If you go to 720p, its many times more bits of information and at that point mjpeg become unusable because of the file sizes (storage and transfer times) and so you have to introduce mpeg2 or, more likely, mpeg4. The most common option, H.264, an Mpeg 4 standard, requires many many more times the processing power per frame than MJpeg so you’re in a situation where Atom, one of the more common mobile cpus that can be used with common video editing software, just doesn’t cut it.

There are choices.

Highly optimized software
More powerful CPU
GPU assistance
Cloud-based editing

The solution for mobile video requires a careful balance of source quality, format and bitrate and a partnership with optimized software on a platform that can do as much in dedicated codecs as possible. OR you get a big fat mobile pipe and do the crunching in the cloud.
There’s only so much that can be done in GPUs and hardware codes though. Fades, overlays and other per-frame changes can only be done in CPU and remember, video editing requires decoding and encoding, you don’t often find that in a mobile computing platform.

So here’s the challenge:
A basic video editing solution that includes watermarking, titles, clip editing, fades and crossover, audio track editing and voice-over. It should be able to take common formats in without having to convert them to a working format. It should output a format that is YouTube friendly. Minimum 480p with a bitrate of 2mbps and 25fps.
The hardware should not weigh more than 1.5kg but should last for about 4hrs of editing, 6hrs of general computing. The screen can be up 12.1″ to allow for a resolution of 1366×768 or similar. 10″ is acceptable if the resolution is good enough. Thinner and lighter is better than smaller screen in my opinion.
Cost – Under €600.

This is a huge challenge.

A quick brainstorm this afternoon has me starting with keywords like CUDA, Intel core, H.264 (source and output) 480p

The interesting part of this challenge is that I will have to buy a new camera. 720p recording is common but I rarely see cameras that can record a real 480p 16:9 source. Ideally I would combine my digital camera with the video camera but I know that’s going to be very very difficult to achieve.

Your input is welcome on any aspect of this. I’ll be updating when I’ve made discoveries and decisions. Wish me luck!

Posted from WordPress for Android with the Galaxy Tab

Mobile Video – The Hardest Nut To Crack

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Over at Carrypad I’ve been writing about another attempt to get a mobile reporting kit together. This time the Netbook gets left in the hotel and I try to use the Samsung Galaxy Tab as the main input device. I’m using it now and it is working out really well. The Nokia N8 works fantastically as a mobile camera too. Results in some low light tests I did snow a huge improvement in quality over my bridge camera, the Canon S2IS. Only the optical zoom is missing.

One major problem I have though is video. With my bridge camera I can produce reasonably good quality videos at VGA resolution. The files are big mjpeg jobs but they’re easy to work with on a Netbook. 720p videos produced with the N8 however aren’t nearly as good. The stabilization isn’t as good, audio isn’t as good, there’s no zoom and the videos are done in fixed-focus mode. Given that the N8 is one of the best 720p capable camaeraphones out there, it looks like I will have to stick with my Canon S2IS. At 500gm it’s not much fun to carry around but what’s the choice?

I love the zoom, the USB remote capture, the hinged viewfinder, the stereo mics and the AA batteries. The only device I can find that competes is the SX20IS but then we’re into H.264 territory which means the netbook would need to be upgraded in order to process the files. It’s still over 500gm too.

Most people with any sense would just upgrade and take the hit on the extra weight but I am determined to focus on mobility here.

Given the N8 can’t do the video, I need to focus on something else as the camera and video camera and just use the N8 for those times (many) when I haven’t got my camera with me.

10x Zoom
USB connectivity
720p recording with zoom, continuous AF and good quality microphone
sub 250g weight
SDHC card support

I’m currently looking at the Panasonic Lumix DMC-TZ10 which seems to be getting good reviews in the camera and video department. The Sony HX5 is also getting good video and low-light reviews.

I have a week before CES so if anyone has any ideas, please let me know.