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POEncoding parameters in videos for web (low in size) while keeping quality good enough?
 

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  1. POEncoding parameters in videos for web (low in size) while keeping quality good enough?
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    <p>I'm trying to build a video sharing platform much like youtube. So far everything is going great, but i'm having difficulties with my encoding parameters in ffmpeg. I'm using a silverlight media player so the output file must be in wmv format.</p> <p>The only thing i can play freely was -qscale parameter and it gets shabby after 8. And i downloaded some youtube videos and they seem to keep amazing quality (definitely not -qscale 8 can achieve) with very low file sizes.</p> <p>So what i'm asking is some patterns that can help me convert a video to high, mid and low quality wmv videos.</p> <p>The codec i use right now is pretty simple and useless is like this; (oh btw audio must keep 128k or higher quality for mid and high)</p> <pre><code> ffmpeg -i a1.wmv -vcodec wmv2 -qscale 2 -s 852x480 -acodec wmav2 -ar 44100 -ab 128k -y a480.wmv ffmpeg -i a1.wmv -vcodec wmv2 -qscale 4 -s 640x360 -acodec wmav2 -ar 44100 -ab 128k -y a360.wmv ffmpeg -i a1.wmv -vcodec wmv2 -qscale 6 -s 354x200 -acodec wmav2 -ar 44100 -ab 128k -y a200.wmv </code></pre> <p>the output quality i achieve with this command is more than enough but the sizes are usually 10 times larger than a youtube video near the same or less quality.</p> <p>Thanks in advance!</p>
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    1. COyoutube uses flv, not wmv.
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      1. USmatzahboy
    2. COyes i know, they use a flash player. but i'm using silverlight thus i need to encode it to wmv and i still need to find nice parameters to keep my size low while keeping quality good enough.
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    3. COh.264 is a superior format to the compression algorithm that wmv uses. You won't be able to achieve the same quality for the same amount of space.
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