Transcoder Upgrade Forum Preview

I was going to give you feedback but I noticed that I can no longer log into my (forums) account. It just says

No login methods

No login methods are configured.
Administrators can visit /u/admin-login to reconfigure the site.

and afterwards

The change you wanted was rejected.
Maybe you tried to change something you didn’t have access to.

I googled the error message and the only other mention of this issue says that it happend to them after changing their email address. I think that that’s also happening here? I’ve changed my email many months ago but maybe I didn’t log into my account for that long. If a mod wants to help me with this please PM me and I’ll tell you my info.


With that out of the way I got the new Transcoder and haven’t found any functional regressions. I did some performance tests though and the old Transcoder is considerably faster:

Scale Scale + Burn-in
1.42.1.10060 4.04x 3.64x
Preview 2.66x 2.23x

Meaning with this new Transcoder I can only serve up to 2 clients at once whereas in the past I could do 3-4.

Interestingly enough these are h264_vaapi numbers but hevc_vaapi hasn’t resulted in a significant performance pentalty. Which is weird because if I do the transcoding with ffmpeg directly I get way higher performance with H.264:

Scale
hevc_vaapi 4.09x
h264_vaapi 11.4x

(Note that this is not an apples to apples comparsion. It’s just to demonstrate the performance difference between codecs)