FFmpeg convert to HD video format that Adobe Premiere Pro will not crash on?
Proxies

Consider using proxies: especially if this is 4k or bigger. A proxy is a lower res stand-in for editing. Upon export the original, bigger, higher quality originals will be used to create the output. See Adobe Premiere Pro User Guide: Proxy Workflow for more info.

You can have Premiere create the proxies, or create them with ffmpeg and have Premiere use those as the proxies.

Lossless

If you don't want or need a proxy another option is to use an editor friendly, lossless intermediate file using a format such as Ut Video. This will avoid the unnecessary generation loss of using lossy H.264–although to be fair when given enough bits you may not notice a difference or care.

One downside is file size, but if it is going to be temporary it may be a moot point.

Premiere can both decode and encode Ut Video after you install it (you may have to restart Premiere).

Example command:

ffmpeg -framerate 30 -i input_%05d.tga -c:v utvideo output.avi