[FFmpeg-user] getting blured video.

Moritz Barsnick barsnick at gmx.net
Wed Feb 20 11:00:39 EET 2019

On Wed, Feb 20, 2019 at 13:18:57 +0530, AMIT KUMAR wrote:
> Hi,
> These two command line i am implementing.
> Command line :
> 1). "-i 588041.webm -i 588041.wav  -filter_complex
> [0:a][1:a]amix=inputs=2:duration=longest  -preset ultrafast -vf
> scale=1280:720  588041.mp4"                    //This one i implementing
> 2).  "-i 588041.webm -i 588041.wav  -filter_complex
> [0:a][1:a]amix=inputs=2:duration=longest  -preset ultrafast -r 24 -crf 8
> 588041.mp4".

You didn't understand correctly, Carl asked for the complete console
output (a copy/paste of the text) from running the commands.

> How does the output look if you use a silent sound generator, or when just
> processing the video through without audio?
> --------------->>>>> Actually at the time of creation video that have an
> already audio , and for that video i have an extra audio file so we merge
> the extra audio file with video without echo produce.

Again, you misunderstood the request. The question was: What happens if
you omit muxing the WAV, in other words just recode the video. Does is
also look blurry?

I tried your conversion - to me, it does not look blurry at all, but
very close to the original. (My ffmpeg encodes with libx264, perhaps
yours does something different.)

Please note that the original's resolution is 320x240, it won't look
like HD if you scale it up to 1280x720.


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