transcoding vp8 encoded ivf files to h264 takes too much time

[lugcz]

I use filesaver under examples for recording. After finishing the recording, I merged the ogg file and ivf and found that the video duration was wrong (I only recorded for tens of seconds, but using mediainfo to check it actually showed more than ten hours), so I used ffmpeg to transcode and found that the transcoding took a very long time.

Do you guys have any good solutions?