Feature Request: ffmpeg command line direct editing

[guest1123]

It would be great to be able to edit ffmpeg command line directly.
There too many ways to use ffmpeg that can not be covered by a limited preset list.
Technically, any requirement can be fulfilled by generating an uncompressed avi file. But with ffmpeg, it can be done much better. A network pipe connected to other post-processing nodes would save the great burden of storage system. The ffv1 codec could achieve a decent compression ratio to uncompssed video without too much cpu cost. If H264 "lossless" is used as the intermediate codec, preset ultrafast and yuv444p are still good options to be available.