[x264-devel] Issues with intra refresh?

[Robert Logue]

I forgot to add I am using libx264.so.120

On 12/01/12 16:37, Robert Logue wrote:
> Hello,
>
> When I was running a test harness to go to youtube and download random
> videos and transcode I found an issue. The issue is with intra-refresh
> turned on libx264 gives back different video for the same input video
> and params. This only seems to occur when the 1 process does multiple
> transcodes of the same file.
>
> To test this I altered the x264.c file to transcode the same input file
> twice and as output I got two different video files different file size
> and different frame data.
>
> The command I used was
>
> /spare/x264/install/bin/x264 --preset=veryfast --bitrate=300
> --tune=zerolatency --profile=baseline --intra-refresh --vbv-maxrate=300
> --vbv-bufsize=12000 --ipratio=0.4 --qpmin=10  -o ./output.mp4 ./input.mp4
>
> and the video can be found here
>
> http://199.91.152.89/nhnunbt586kg/5xzsdnshfcgj459/tram.mp4
>
> Note the video was downloaded by a random test harness and is quiet
> offensive. If possible it should not be watched and if watched the sound
> should be turned down.
>
> I was on the web chat earlier and the guys on there indicated that this
> could be a bug. Is there any where else to raise this or is here ok?
>
> Thanks
>
> Robert
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