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How to decode the H.264 Encoder Bitstream

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  #1  
Old 04-03-2011
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How to decode the H.264 Encoder Bitstream
  

I have implemented H.264 encoder as well as decoder except encoder production bitstream is not an ordinary one. It?s type of proprietary. At this moment I would like to decode my encoded bitstream by the use of VLC player. As a result for that bitstream must be standard one. Can anybody recommend me how to set off on it? I have gone all the way through regular, however it?s puzzling. Can somebody recommend me whichever seminar or whatever thing?

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  #2  
Old 04-03-2011
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Re: How to decode the H.264 Encoder Bitstream

H.264 is a business standard intended for video compression, the procedure of translating digital video into a system that obtains fewer capability while it is stored or transmitted. An H.264 video encoder takes out prophecy, renovate and encoding processes to construct a condensed H.264 bitstream. An H.264 video decoder takes out the balancing processes of deciphering, opposite convert and modernization to create a decoded video series.
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Old 04-03-2011
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Re: How to decode the H.264 Encoder Bitstream

A video decoder obtains the condensed H.264 bitstream, deciphers each one of the syntax essentials and takes out the information explained on top of (quantized make over coefficients, prediction data, and so on). This data is afterward utilized to overturn the coding procedure and reconstruct a series of video images.
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Old 04-03-2011
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Re: How to decode the H.264 Encoder Bitstream

Seeing that my preceding experience, the mx27 can encode h.264 as well as decode 3 h.264 video bit stream by the side of the equivalent instance. However this straightforwardly makes use of vpu lib, not via gst unit. Incidentally, if you draw the mxc vpu component check code, you can locate out how to utilize the vpu lib. The restriction of encode as well as decode at the equal occasion seemed surrounded the emma_lt bandwidth on the frame size with reference to VGA 640x480 at 22fps. For 30fps otherwise 25fps, there will have a little black line on the rebuild video. If you have whichever trouble on exploiting vpu lib, you should get some good direction from expert.
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Old 04-03-2011
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Re: How to decode the H.264 Encoder Bitstream

Map out the mxc vpu component check concerning the loopback.c, dec.c, display.c, enc.c, capture.c. You can uncover out how to making use of the vpu lib straightforwardly not via gstreamer. The gstreamer method is excessively sluggish for your real-time video application, similar to video phone, etc. The next, the mx27 can generate for example of vpu, each one can be encoder otherwise decoder, if you would like to carry out this, please get this into your brain, the frame dimension will be restricted to qvga. I had attempted to decode 4 h.264 VGA, except got no approach to create this genuine. If for h.264 qvga, then this is a high-quality mixture.
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  #6  
Old 05-03-2011
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Re: How to decode the H.264 Encoder Bitstream

The video coding procedure creates numerous values that have to be encoded to shape the condensed bitstream. These values comprise:
  • Quantized alter coefficients
  • Information to allow the decoder to reconstruct the prediction
  • Information regarding the arrangement of the compressed information and the compression utilities utilized for the duration of encoding
  • Information regarding the total video series.
These values plus parameters (syntax essentials) are transformed into binary codes by the use of variable length coding plus/or else arithmetic coding. Every one of these encoding techniques makes a proficient, compact binary account of the data. The encoded bitstream can subsequently be stocked up and/or sent out.
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