
21st Aug 2008, 4:57 pm
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Senior Member
MPx Junkie
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Join Date: Oct 2006
Posts: 381
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Re: What kind of chipt is this ?
Quote:
Originally Posted by David99";p="
I would stay away from all players with the older generation Rockchip 2608A. I had so many problems with video synchronization (between the audio and video) that all I got was a ton of frustration out of it. I don't have these problems with the newer Rockchip 2706 based players.
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The problem of synchronization isn't a problem of rockchip it's simply a problem of converters... using viDrop there won't be such problems.
This out-of-synch issue appears in all the MP4 if it's not used the proper converter and appropriate parameters as FPS, bitrate and codecs. I do have a Cowon D2, a Onda VX858, a Meizu M3 and a ATJ-2135 based player and in all of them I've been able to play the videos without out-of-synch, after some out-of-synch troubles.
This depends of the way the converter works... some converters works synchronizing audio and video only putting both channels aligned at start of reproduction... this method works fine in fast processors like a PC.
Other converters (the good one) works with a time stamp that assure that audio and video are marked to be always aligned... some mp4 like rockchip works this way.
This was explained by the maker of viDrop which uses this method thru Mencoder.
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