how to sharp video quality

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how to sharp video quality

Amit Mangal
Hi everyone,
I am trying to convert one .wmv file to .mov. My command is

ffmpeg -i test.wmv -vcodec libx264 -flags +loop -cmp +chroma -deblockalpha 0
-deblockbeta 0 -crf 25 -bt 256k -refs 1 -coder 0 -subq 5 -partitions
+parti4x4+parti8x8+partp8x8 -g 250 -keyint_min 25 -level 30 -qmin 10 -qmax
51 -trellis 2 -sc_threshold 40 -i_qfactor 0.71 -acodec libmp3lame -ab 96k
-ar 44100 -ac 2 amit7.mov

But video generated by my command is not sharp please help me what should in
modify in command so that my video is give me some more quality.
i have attached one file left side my video and right side original video.
please tell me what should i change in command so that increase quality. i
dont want to remove -crf 25 cause due to this size reduce.

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Re: how to sharp video quality

Rodney Baker
On Sun, 2 May 2010 19:14:46 Amit Mangal wrote:

> Hi everyone,
> I am trying to convert one .wmv file to .mov. My command is
>
> ffmpeg -i test.wmv -vcodec libx264 -flags +loop -cmp +chroma -deblockalpha
> 0 -deblockbeta 0 -crf 25 -bt 256k -refs 1 -coder 0 -subq 5 -partitions
> +parti4x4+parti8x8+partp8x8 -g 250 -keyint_min 25 -level 30 -qmin 10 -qmax
> 51 -trellis 2 -sc_threshold 40 -i_qfactor 0.71 -acodec libmp3lame -ab 96k
> -ar 44100 -ac 2 amit7.mov
>
> But video generated by my command is not sharp please help me what should
> in modify in command so that my video is give me some more quality.
> i have attached one file left side my video and right side original video.
> please tell me what should i change in command so that increase quality. i
> dont want to remove -crf 25 cause due to this size reduce.

Use presets. Go and read this page:

http://rob.opendot.cl/index.php/useful-stuff/ffmpeg-x264-encoding-guide/

This will get you going in the right direction.
--
===================================================
Rodney Baker VK5ZTV
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===================================================

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Re: how to sharp video quality

Chris Bannister
In reply to this post by Amit Mangal
> Hi everyone,
> I am trying to convert one .wmv file to .mov. My command is

[snip]

Wow ... what a huge email! Can't the list software filter these out?

Mr amitkumarmangal, could you please read the nettiquette guidelines
regarding posting to mailing lists.
--
Chris.


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