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Danathan
Tux's lil' helper
Joined: 08 Mar 2004
Posts: 120
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 Posted: Wed Apr 13, 2005 12:51 am Post subject: Creating Web Compressions w/ Gentoo |
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Has anyone successfully created compressions for the web using Gentoo? By successful, I mean something that can be viewed by a standard Quicktime or Windows Media Player install (either one) on a Windows box.
If so, what did you use for the video and audio codecs? Were you able to achieve reasonable compression?
As history, I got all the way through editing and crunching output from MythTV, only to find that the xvid codecs are non-standard on Windows installs...
Thanks,
Dan |
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rouben
Apprentice
Joined: 07 Feb 2005
Posts: 159
Location: Thornhill, ON, Canada
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| Posted: Wed Apr 13, 2005 5:26 am Post subject: |
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All the "standard" codecs are either patented or can only be used in patented wrappers (e.g. WMV9 codec can only be used in ASF/WMV files and not in AVIs or OGMs, for example).
AFAIK there is no way to create a media file in Linux (legally) that would be playable on a Windows computer "out of the box", not because it's technically impossible, but due to a little nasty thing called software patents. One fo the reasons why VirtualDub had to drop development of ASF/WMV file support. |
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wjholden
l33t
Joined: 01 Mar 2004
Posts: 826
Location: Augusta, GA
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Danathan
Tux's lil' helper
Joined: 08 Mar 2004
Posts: 120
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| Posted: Wed Apr 13, 2005 2:11 pm Post subject: |
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| rouben wrote: | | AFAIK there is no way to create a media file in Linux (legally) that would be playable on a Windows computer "out of the box", not because it's technically impossible, but due to a little nasty thing called software patents. One fo the reasons why VirtualDub had to drop development of ASF/WMV file support. |
That's kind of what I figured... I guess the business model is that you spend lots of money to get your codec on everyone's box, and then charge lots of money to allow anyone to create content compatible with it... Sigh... |
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lbrtuk
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Joined: 08 May 2003
Posts: 910
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| Posted: Wed Apr 13, 2005 9:19 pm Post subject: |
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Ironically, the problem you're going to be running up against here is windows' deficiency in its video support (by default at least).
If you're targetting machines with quicktime installed, I'm sure you could use ffmpeg to create a valid ISO MPEG4 stream in a .mp4 wrapper. |
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Danathan
Tux's lil' helper
Joined: 08 Mar 2004
Posts: 120
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| Posted: Tue Apr 26, 2005 2:23 pm Post subject: |
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| lbrtuk wrote: | Ironically, the problem you're going to be running up against here is windows' deficiency in its video support (by default at least).
If you're targetting machines with quicktime installed, I'm sure you could use ffmpeg to create a valid ISO MPEG4 stream in a .mp4 wrapper. |
Thanks for the suggestion. That's exactly what I did, and it works!
Using ffmpeg with the mpeg4 video codec and the aac audio codec creates an mp4 that's valid and playable in current versions of quicktime. Running it through mpeg4ip ($ mp4creator -optimize my.mp4) hints/optimizes the file in a such a way that it'll progressively download over http.
Sweet. HTTP Streaming using linux encoders. Sweet. |
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Danathan
Tux's lil' helper
Joined: 08 Mar 2004
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Multimedia
