> From: ffmpeg-user [[hidden email]] on behalf of Matthew
> Reus [[hidden email]]
> Sent: Tuesday, January 29, 2019 7:32 PM
> To: [hidden email] > Subject: [FFmpeg-user] SD channels to HD
> How can we use ffmpeg to transcode SD channels of resolution 720*576 to HD
> format .
> So we can obtain best picture qualtiy for live streaming , wihtout
> interlace and frame drops .
> I am using ubuntu server and have compile ffmpeg on it . please advise on
> SD to HD conversion .
> you could look at the filtergraph command and its options and look at how
> to scale and pad the video to create a letter box formatted output.
> ffmpeg -i input.mp4 -vf "scale=..., pad=..." output.mp4
> help docs is a good place to start
> https://trac.ffmpeg.org/wiki/FilteringGuide >
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On Wed, Jan 30, 2019 at 08:04:29 +0545, Matthew Reus wrote:
> but quality is highly degraded , interlaced how can we manage on this case
You should show us your actually used ffmpeg command line and its
complete, uncut console output, so we can understand what your are
doing. This will also show us some details about your input material
and what you are trying to achieve. E.g. we don't even know which
encoder you are trying to use...
(Eventually, you should also read up on the docs, which tell you how to
change the quality of your encoding, and how to deinterlace.)