[FFmpeg-user] error concealment from ffmpeg/x264 for h264 videos

[HardikSharma]

I attached the .264 encoded stream I used to introduce errors.  



________________________________
From: Michael Niedermayer [via FFmpeg-users] <ml-node+s933282n3863299h87 at n4.nabble.com>
To: HardikSharma <hardik.sharma22 at yahoo.com>
Sent: Saturday, 1 October 2011 10:19 AM
Subject: Re: error concealment from ffmpeg/x264 for h264 videos


On Fri, Sep 30, 2011 at 10:32:15PM -0700, HardikSharma wrote: 

> Hi guys, 
> 
> I am producing error in h264 stream by dropping 5%, 10% and 20% slices from 
> JM and ffmpeg encoded streams. I calculated PSNR for both and JM is like 
> more then 40% better then ffmpeg. I tried to get JM and ffmpeg to as close 
> as possible in specifications. 
> 
> The bigger concern is in ffmpeg, it even dropped some frames when I 
> introduced error in 264 stream but JM didn't drooped any frame. Am I 
> ignoring any crucial point? or is it suppose to be like this. That's why I 
> want to know what kind of conceal FFmpeg uses so that I can figure out 
> something for this. Please post your suggestions.     Please provide the h264 stream you use so we can reproduce this 
difference 

[...] 
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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB 

It is what and why we do it that matters, not just one of them. 

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