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| Discuss what's fucking going on, and which programs are best and worst. One-time "program" announcements from "established" webmasters are allowed. |
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Thread Tools |
08-19-2014, 09:37 AM
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#1 |
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Confirmed User
Join Date: Apr 2010
Posts: 272
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FFmpeg Query
I have a problem with FFmpeg that I don't understand.
Using FFmpeg 1.2.7 - using same encode command with fixed bitrate for both video resolutions. Video encoded to 320x240 (~70mb file size) Video encoded to 448x336 (~70mb file size) Now, the video encoded to 320x240, once play button clicked on site will start playing within 1-2 seconds. The same video, encoded to 448x336, takes around 11 seconds to start playing. Why does it take so much longer for the 448x336 video to start playing? |
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08-19-2014, 10:01 AM
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#2 |
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Confirmed User
Industry Role:
Join Date: Sep 2005
Posts: 425
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Resolution doesnt matter, it is al about bitrate!
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08-19-2014, 10:09 AM
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#3 |
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Confirmed User
Industry Role:
Join Date: Sep 2005
Posts: 425
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Starting peoblem could be due to fastsyart enables or disabled.
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08-19-2014, 02:23 PM
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#4 |
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Confirmed User
Industry Role:
Join Date: Aug 2007
Posts: 6,697
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For us to help effectively you should provide the encode command you are using at least. And even better would be a sample video clip where you are seeing the problem as well. Ffmpeg can be pretty complex and there are all sorts of options and factors.
Also did you verify the playing delays happen on other hardware as well? For example with some older nvidia cards they are unable to use all hardware decoding technologies for certain video resolutions. Namely vdpau feature set B I believe (without looking it up).
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