High-definition video or HD video refers to any video system of higher resolution than standard-definition (SD) video, and most commonly involves display resolutions of 1280×720 pixels (720p) or 1920×1080 pixels (1080i/1080p). And some DV or camera recorded video formats are also HD video such as TS, M2TS, TP, TRP, etc.

When you want to upload these HD videos on Youtube or play them on iPod, you will come across this problem – "I need to convert HD video formats for uploading or portable players, but why the output quality gets bad after conversion?"

 This article can help your resolve this issue – reduce the quality losing when convert HD video with HD video converter.

First, you need to download a HD video converter that contains two features:
1.    Can convert HD video formats that I listed above. 
2.    Can adjust the video parameter: Resolution (up to 1920×1080 pixels), Bit Rate, etc.

Here I just take the Aimersoft HD video converter as a sample.



This HD video converter supports HD video output and all Resolution parameters of the HD video in the settings have been changed from1280*720 to 1920*1080.

So, you just need to select the output video format from the HD video column (mp4 for iPod, wmv for uploading, etc.) and adjust the Resolution to 1920*1080 and Bit Rate to 8000 kbps.
(This HD video converter also supports setting Resolution parameters manually, so you can type the data by yourself).

 

After parameter adjusting, you can edit the video effect or start to conversion directly.

Of cause, you can Google other HD video converter for your own usage, and the key is that it should have high Resolution option for output, so you can reduce the quality losing during the conversion process.

But please remember that it's impossible to convert HD video without losing any quality as the code compress process would destroy most of unimportant data.