Problem Converting HDV to 320x240

Peyton-Todd wrote on 8/18/2009, 12:07 PM
Hello. I will be recording a deaf sign language conversation in high definition to enable me to analyze eye positions, etc. carefully. For publication, however, I would like to create 320x240 .mov files, but I have not been able to achieve this using my new Vegas Video Pro 9.0.

Specifically, what happens is that - with all the settings I've chosen so far - the result is BOTH letterboxed (sideways, not top & bottom) AND squshed sideways such that the subject looks thinner than he really is.

I plan to deliver the files in two main 'venues': (1) on a local computer (displayed on my laptop at academic conferences, clips sent to colleagues, etc.); (2) over the internet. Some samples of the latter can be seen at my website at http://www.vincentasl.info. As you can see, all of the videos on that website are embedded in PDFs, and (as may be evident from the window style chosen by Acrobat to display them) all are .mov files. (Most are built using the 512 KB option in Vegas 3.) However, I would also like them to be able to be displayed simply embedded into a web page with the <object> or other appropriate tag.

As to the format of the recorded files I'll be editing, I'll choose whatever works best, but so far I have been recording using Canon's VIXIA HV30 (the cheapest yet well-reviewed HDV camera I could find) in their 'HDV(PF30)' format, which their manual describes as "High definition video at 1080i specifications for recording with a progressive frame rate of 30 fps. You can use this setting to easily edit your recordings, for example to post them on the Web." (I don't understand what the 'i' would mean in '1080i specifications' if the recording is progressive; isn't the 'i' supposed to stand for 'interlaced'?) The result has been m2t files which my computer cannot play directly, but which my Vegas 9.0 is able to load and display.

I want the output for publication to have a small filesize for display on the internet, and the 4:3 ratio is adequate for showing a single signer (which my examples will nearly always be limited to), and of sufficient resolution to make most of my points. For years now, Vegas 3.0 has met all my needs perfectly until I suddenly encountered the need to record in high definition for better data analysis.

I have already engaged in a long incident about this problem with Sony Technical Support, all to no avail, apart from learning that I should use Sorenson Video 1 (referred to in Vegas 9.0 properties simply as 'Sorenson') instead of Sorenson Video 3, which results in huge files. However, the results have always been as I described. I understood from the experts I consulted (at Creative Cow, I think it was) that I could simply crop the high definition files to the aspect ratio I want but so far that has not turned out to be true. Or maybe it was true, but letterboxed and squshed.

According to Vegas 9.0, the test files I have recorded are 1440x1080x12 (what does the 12 mean?), and 'Upper field first', from which I infer that it really is interlaced after all, despite the use of the word 'progressive' in their description of the setting I chose. (It's true they say 'progressive *frame rate*, but what does the frame rate have to do with progressive vs. interlaced? And 1440x1080 works out to a 4:3 ratio even though the result looks wide (presumably 16:9) as displayed on Vegas. What's going on? Super-wide pixels? Does the term 'aspect ratio' refer only to pixel count?

All I really need to know is what settings to use, but it would be great to understand all this if anyone cares to provide a 50 cent lecture! I don't even understand what the purpose of Project Properties in Vegas is: after all, the properties of the initial recording are determined by the video camera, and the properties of the output are supposedly determined by what you choose when you render it.

Thanks in advance for your help.

Comments

Chienworks wrote on 8/18/2009, 12:49 PM
Set your project properties to 320x240, pixel aspect ratio 1.0 (square pixels).

Drop your finished HD output file on the timeline. Open up Pan/Crop on the event, right-mouse-button click in the cropping frame, and choose 'match output aspect'.

Now render to a 320x240 file.
Peyton-Todd wrote on 8/20/2009, 7:25 PM
First, thanks very much, Chienworks, for your solution this problem I've been struggling with for so long. It's easy when you know how!

Second, to whom it may concern (I presume this forum is monitored by somebody?), as a suggestion to improve things: could there be a place for us to request e-mail notification when someone responds to a post? This is frequent in other forums. In fact the Sony tech support site does this automatically without being asked to do so.

At least I don't remember asking for it - maybe I did and forgot. Lots of sites do have a box to check to request to be notified. I just tried a dummy post on this site to see if I forgot to check an appropriate box, but as far as I can see, there is no box to check.

Anyway, thanks again, and I wish I had had the wisdom to check back in to this site two days ago, thus saving myself further pain!