Tiled image on each key frame

About encoding, codec settings, muxers and filter usage
ralf.butler
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Tiled image on each key frame

Postby ralf.butler » 28 Jan 2010 04:45

Dear All,

I record with vlc:

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cvlc --color --run-time=10 v4l2:///dev/video0 :v4l2-adev= :v4l2-standard=0 :sout='#transcode{vcodec=mp4v,vb=800,scale=1,acodec=none,sfilter=marq}:std{access=file,mux=mp4,dst=/tmp/out.mp4}' --sub-filter marq --marq-marquee \"%D %H:%M:%S\" --marq-position 6
When replaying the footage each key frame is tiled (I don't know the exact wording for this kind of effect).
This is how a floor looks like when I record it:
Image
But it should look like this:
Image

With each frame after the keyframe the quality is getting better. But as soon as the next keyframe appears I see a tiled image again.
Any suggestions are welcome.

Ralf

Rémi Denis-Courmont
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Re: Tiled image on each key frame

Postby Rémi Denis-Courmont » 28 Jan 2010 16:27

Increase the video bit rate ro decrease the frame rate.
Rémi Denis-Courmont
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ralf.butler
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Re: Tiled image on each key frame

Postby ralf.butler » 30 Jan 2010 10:46

Hi Remi,

I would like to keep the frame rate. I hope a video bit rate of 1000 will do the job.

Thanks,
Ralf

ralf.butler
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Re: Tiled image on each key frame

Postby ralf.butler » 30 May 2010 00:02

Got slightly better. Thanks


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