Batch convert video files for upload to Flickr

[vikasa]

I have hundreds of home video files in various formats (AVI, MP4, MOV, etc) in sub-folders in a \My Photos folder on my Windows 7 PC. I would like to upload all of these to my Flickr account. But Flickr supports only certain video formats.

What is the easiest way to convert all these files into a Flickr-friendly format? I know there are many video converter tools out there but I am not sure what "preset" (i.e. output format, codec, frame rate, height/width, etc) to use to make it compatible with Flickr? Ultimately, the goal is to view the video on a mobile device (phone, tablet, Chromecast to TV, etc).

I am looking for a GUI that I can drag and drop 100s of files, select a preset that determines the optimal transcoding parameters for Flickr and click a button and come back in a few hours to find files ready to upload to Flickr.

What tools and presets do you recommend?

Thanks

[Baldrick]

Convert to mp4 with h264 video. Use for example vidcoder.

[newpball]

Also please make sure you backup the originals, every time you convert a video you lose quality (unless the conversion is lossless).