[gyf304]

Look great, a few nits:

- For the convert page, the tool seems to conflate codec and container format. For example, for MKV option, the tool specifies libx264, when MKV is capable of many more codecs. In addition, a lot of the times when people want to "convert", e.g. from MP4 to MKV, they mean to remux - i.e. "-c copy", which doesn't seem like an option here.

- For the compress page, the tool allows you to specify the target size, however the command output limits bitrate instead of target size. This means that the output size will vary depending on how long the input is, and will almost never be the specified target size.

I would suggest merge the "Convert" and "Compress" tabs, and allow specifying:

- video bitrate (-b:v)

- video codec (-c:v)

- audio bitrate (-b:a)

- audio codec (-c:a)

- container format

I found handbrake to be a good GUI-based alternative if ffmpeg commands are overwhelming.