That wouldn't work one way or the other, as CS5 is 64bit only and simply cannot execute 32bit code. Have you tried running these files through Adobe Media Encoder CS5 and see if they can be converted there? Can you provide a sample file? Perhaps it just contains some odd metadata that may be possible to strip out. AE not using the file shouoldn't happen, though, even if it's odd to work with them in the firsat place...
"Note: After Effects CS5 can import FLV files with video encoded using the On2 VP6 video codec; After Effects CS5 can’t import FLV files with video encoded with the Sorenson Spark video codec. As with any unsupported format, transcode the file to a format that After Effects can import."
If, as you say, you have CS4, then you can use After Effects (or better, Adobe Media Encoder) CS4 to transcode the FLV files to use the On2 VP6 codec.
The On2 VP6 codec is usually the preferred codec, anyway, in part because it can contain transparency information in an alpha channel.
None of the CS5 applications can encode or decode video with Sorenson Spark. This is a codec that must be licensed separately, and Adobe doesn't license this technology for CS5 applications.
thanks to Mylenium and Todd_Kopriva for their detailed anwers!
Clips with this unusual .flv-format can be found on www.istockphoto.com
Just download some demo clips from video-section and try to import them to AE CS4 (no problem) and CS5 (failure, even mith media encoder CS5)....
With CS4 it was easy to integrate quickly some of these footages to my projects. Now i have to make a detour with the media encoder.
Ok, better Adobe Media Encoder than no use of the upgrade....
P.S.:Perhaps sometime there will be an update with a supported Sorenson Spark-encoder
So I too am having the same problem and came across this post. (yes, my clips are from iStock too...)
But how can I convert the files in Adobe Media Encoder CS5 if CS5 doesn't support the Sorenson Spark codec? I Opened AME and went File, Add and selected my .flv file ... and had AME reply, "The source compression type is not supported".
How else is anyone out there making this work?
> But how can I convert the files in Adobe Media Encoder CS5 if CS5 doesn't support the Sorenson Spark codec?
You don't. You use Adobe Media Encoder CS4 (or another program).
Actually, if you're using AFCS5 on a mac, you can download and install perian, http://perian.org/ and restart after effects. You will then be able to import the istockphotos flv files without having to re-encode. I just did this on 2 machines. Good luck!
We had the same problem today... downloaded an FLV from YouTube... tried to open it in Adobe Media Encoder CS5.5 and got the error message going something like "The compression type is not supported".
Following jcjacob's suggestion, installed Perian... restarted Media Encoder and voila, importing the FLV worked.
Perian can cause all kinds of trouble on a Macintosh running Final Cut Studio.
Extrensive Perian threads can be found using any search engine.
We do all of our weird conversions on a PC. Some YourTube downloaders will convert on the fly to useful codecs during the download or by sending the URL to a transcoding site.
I ran across this same problem, and after finding this thread and seeing that it's a licensing issue, I started my search for a good converter. Gizmo at TechSupportAlert.com recommends the free iWisoft converter:
It's worked so far for me. I transcoded an FLV (which AME and Premiere Pro CS6 couldn't import, of course) to an MP4.
... recommends the free iWisoft converter:
Adobe couldn't open/transcode it but the FREE (windows) iWisoft Video Converter could!!!