Forum Archive Home -> Capturing -> Video bitrate in tv card
Video bitrate in tv card |
| Fire Foxer posted 2009 Oct 23 04:19 |
| hello
how should i know how to define to video bitrate when recording in the tv card now its standing on 65000 how does it works? if i will climp it up the quality will be better or what? |
| guns1inger posted 2009 Oct 23 04:27 |
| What card ?
What capture software ? |
| jagabo posted 2009 Oct 23 06:33 |
| What source?
What cabling? What filtering will you be doing? What final output (DVD, Youtube, etc)? 65000? Do you mean 6500 kbps? |
| Fire Foxer posted 2009 Oct 24 16:53 |
| card: Compro M1F
software capture: Compro DTV4 cabling: S-Video output: DVD (mpg) filtering: what do u mean by filtering i didn't understand 6500 yes |
| jagabo posted 2009 Oct 24 18:22 |
| Since your target is DVD you are talking MPEG 2 encoding with bitrates below ~9000 kbps. If you have less than 1 hour to put on a single layer disc (4.7 GB) you can simply use constant bitrate encoding at ~9000 kbps. The max bitrate allowed is about 10,000 kbps for video + audio + subs. For more than an hour on a single layer disc you should use a bitrate calculator to determine the appropriate bitrate. Then use a 2-pass variable bitrate encoding with the average bitrate set to that value. 2-pass encoding isn't possible while capturing.
Basically, the higher the bitate the better the quality. The basic relationship between bitrate, file size and running time is: file size = bitrate * running time Filtering refers to adjusting the picture. Things like contrast, color, sharpening, noise reduction, etc. Filtering can be too slow to do while capturing. If you need to filter, and your card supports uncompressed or losslessly compressed video you should use that. Then filter your video and encode to MPEG 2 for DVD. |
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