Hi, On 10/26/06, Mark Pilgrim <pilgrim@gmail.com> wrote:
On 10/23/06, Guillaume Poirier <gpoirier@mplayerhq.hu> wrote:
I'm a bit surprised. I'm quite confident that Quicktime supports anamorphic videos in some way. If it doesn't support SAR, maybe it supports Pixel Aspect Ratio or Display Aspect Ration?
I made a 30-second sample video using my mencoder recipe in draft 3, but omitting the scale filter.
http://diveintomark.org/tmp/foo.mp4
Here's a screenshot of two video players interpreting the file. VLC is on the top, and QuickTime Player on the bottom. I have QuickTime 7.1.3 installed.
http://diveintomark.org/public/2006/10/quicktime-vs-vlc.jpg
For the benefit of those who don't wish to download the sample movie, or if the screenshot disappears in the future, VLC is playing the video at the correct aspect ratio, having scaled it to 854x352. QuickTime Player is playing it at 720x352, and the QuickTime Player "movie info" dialog confirms that QuickTime sees nothing wrong with that.
At least, it's good to see that QuickTime does not refuse to play the file if you set an aspect ratio that VLC understands.
The doc here: http://developer.apple.com/documentation/QuickTime/Conceptual/ QT7-1_Update_Guide/Content/2NewFeaturesChangesa.html
I'm sorry, those docs are way over my head. Is it describing some QuickTime-specific way of embedding the correct aspect ratio?
Maybe, but I'm no expert on that field. To put it in a nutshell: - The doc does seem to say that QT supports aspect ratio - There are just too many different kinds of aspect ratio out there, so I wouldn't be surprised that QT only supports one of them. I hope what what I'm saying make some sense. I'm gonna google around and hopefully find the missing information we need.
If so, perhaps it would be possible to automate that with MP4Box or some other tool that can manipulate raw atoms.
Yeah, I guess so.
Also, like I said, I don't quite like "too personal" style, so I'd prefer smth along the lines of:
I'm happy to make the other stylistic changes after we come to a consensus on the aspect ratio problem.
Ok, great! Guillaume -- With DADVSI (http://en.wikipedia.org/wiki/DADVSI), France finally has a lead on USA on selling out individuals right to corporations! Vive la France!