Tag: h.264

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Clearing room…

Before installing Adobe CS4 I decided that I better clear out some free disk space so that it will not only install fine, but run fine as well. I had bought it for my new iMac, but that’s on hold at the moment.

So what’s on the hard drive?

Well though my files, photos and music take up a fair bit of space, it is EyeTV recordings which take up the most space. I have been a little lax (because I had the space) in editing and exporting recordings.

Generally I only export the recording in the native MPEG2  format, partly to avoid loss of quality, but in the main as it is very quick. After exporting I might copy the Wi-Fi access version into iTunes so I can then put it onto the iPod pretty quickly, but that’s not always done, it depends on the recording.

Of course if I don’t want the recording, it never gets exported and just gets deleted.

After exporting, I try and move files to an external hard drive, to free up space, but it shouldn’t and it does still surprise me by how much space the recordings take up…

Now I know I could export as a DivX format and reduce the file size significantly over the MPEG2, however then I will have a later problem if I want to export into a different format for a different device.

Until we have a consistent video file format then I would rather maintain the high quality large file size of the native MPEG2 recording then try and mess about with a smaller DivX recording for a different device.

I watch the recordings on a variety of devices, the iPhone and various iPods, the PSP, the PS3 and an Archos PVR device. The iPod h.264 recordings for example would not play on the PSP (always) likewise they would not play on the Archos unless I paid €20 for the “extra” to allow the Archos to play h.264 files, if I was willing to pay that I would pay the €20 to allow the Archos to play MPEG2 files natively!

So at the moment I am editing, exporting and in some cases realising that I am never going to watch that special which went out at Christmas and I am deleting!

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Full Resolution Video on your PSP

If you have a PSP with firmware 3.30 or later you can now (much more easily) play full screen h.264 video.

Prior to firmware 3.30 adding video to a PSP was a bit hit and miss.

When I first got a PSP I was very disappointed with the quality of the video I encoded for it using either EyeTV or Toast, more so when I compared it to the demo video I had on the demo UMD disk which came with it.

It wasn’t for some time that I didn’t realise that the PSP did not support full resolution video from a Memory Stick.

You also had to convert the video to a specific MP4 format and importantly change the name to something unfamiliar like M4V01011 and then find the obscure \MP_ROOT\100MNV01\ folder. You were restricted to a 368 x 208 resolution. If you wanted a thumbnail you had to create a jpg file and then rename it as .thm all quite complicated though there were quite a few tools that allowed you to do this quickly and easily (I used Toast quite a bit). One problem was working out what video files were what (easy on the PSP, more complex on a computer).

With the release of firmware 3.30 this changed.

Encoding full resolution h.264 video for the PSP is now possible, this means that you can use the full 480 x 272 resolution and the excellent quality and compression of h.264.

However when I started to encode video for a PSP with firmware 3.30 I did initially have a few problems.

I tried to encode some full resolution video using VisualHub and the in-built settings and then some settings from a forum. However in both instances the video would not play on the PSP.

I initially thought it was maybe because at the time I was using the trial version of VisualHub (which has a two minute limit). However using the default low res settings it encoded and played fine.

I even formatted the Memory Stick wondering if that would solve it, it didn’t.

So I encoded the video in the original pre 3.30 firmware specificiations. As I copied over the video to the \MP_ROOT\100MNV01\ folder when I noticed a Video folder in the root of the Memory Stick.

So I copied the full resolution video over to this video folder, and guess what, yes full resolution h.264 video on my PSP.

PSP

Really impressed with the quality.

Really impressed with VisualHub.

So if you have firmware 3.30 or later ensure that you use the PSP to format the memory stick and then you will have a video folder into which you can copy the video files without having to worry about any naming conventions and be able to have full resolution high quality video.

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Slow, very slow

I have mentioned before the ability of the EyeTV application to export TV recordings in a format which then allows it to be viewed via an iPod touch or an iPhone. It exports in a Quicktime H.264 format, the quality is excellent, and file sizes small, so it is quick to stream/download over an 802.11g  wireless network.

One thing which does let the whole process down is the speed of conversion. On my Intel iMac it is slow, a one hour show takes under an hour. However  on my 1.5GHz G4 Mac mini, it takes  forever.

A two hour recording I made last night which finished at 10.30pm was still been exported this morning at 9.30am! Eleven hours into the conversion process and it was about half way done!

As you might expect I have now turned of the wifi access function of EyeTV on the Mac mini.

Elgato do make a device that in theory makes things faster, the elgato turbo.264, an external USB device which according to the blurb…

Turbo.264 rapidly converts and drops videos into iTunes, ready to synch with your iPod, iPhone, Apple TV or Sony PSP. And even better, Turbo.264 does all the heavy lifting. While the hard work of video encoding is in progress, you can continue to work or play on your Mac.

Turbo.264 also accelerates the H.264 (MPEG-4) export command of popular Macintosh video applications, including EyeTV’s Wi-Fi Access feature. 

I have read mixed reviews, but it certainly does look interesting.