[FFmpeg-user] gain the highest quality with H264 at a certain bit rate
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Tue Mar 28 00:31:16 EEST 2017
negin tebyani wrote:
> this is the source video mediainfo:
That's not ffmpeg console output, but anyway ..
> Bit rate mode : Constant
> Bit rate : 4 000 Kbps
So it's not a much of a master but (I guess) some re-encoded web stream
made from a broadcast stream, which you are encoding for a third time.
Was the "good" sample coded from this?
Maybe whoever made that one had a better master. In this case, I guess
the original broadcast, which was likely higher and variable bitrate.
> and yes, I need to use constant bitrate. do I need to use 2 pass with
> constant bitrate?
Probably not - others may/have given their opinion.
AIUI 2 pass is better for variable bitrate when targeting some file size.
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