Transcoding Speed in V7

[wayner]

Transcodes appear much slower with V7 compared to V6 but I am not sure if this is my hardware or due to a change in Sage - isn't there a change in the Transcoder in Sage7?

My V6 server is a Core2Duo with a 3 GHz CPU.

My v7 server is single core (or HT) but it runs at 3.6GHz.

The conversion job that I was running is to convert an MPEG-2 file to MPEG-4 Deinterlaced. Doesn't the transcoder use a single thread so shouldn't it be faster on the V7 box where the CPU is 20% faster?

[darcilicious]

I don't transcode a lot but yes, there was an update to the transcoder in version 7.0.13. And yes, it does seem slower on my quad-core than in previous releases. But it also fixes the problem of not properly transcoding HD-PVR files

[phelme]

Originally Posted by darcilicious

I don't transcode a lot but yes, there was an update to the transcoder in version 7.0.13. And yes, it does seem slower on my quad-core than in previous releases. But it also fixes the problem of not properly transcoding HD-PVR files

No more out of sync audio? Have you verified this on recordings that have previously failed?

[darcilicious]

Originally Posted by phelme

No more out of sync audio? Have you verified this on recordings that have previously failed?

I couldn't produce the a/v out-of-sync issue on my transcodings -- but I only transcode using the widescreen iPhone setting.

[phelme]

Tried a recording tonight with the b15 transcoder, out of sync.

[Neo]

Originally Posted by wayner

My V6 server is a Core2Duo with a 3 GHz CPU.

My v7 server is single core (or HT) but it runs at 3.6GHz.

Doesn't the transcoder use a single thread so shouldn't it be faster on the V7 box where the CPU is 20% faster?

You can't compare the cpus by just looking at the GHz.

I think you have a C2D E8400, right?
And the other one might be a Pentium 4?
According to http://www.cpubenchmark.net/cpu_list.php the C2D is much faster

Intel Pentium 4 3.60GHz 582
Intel Core2 Duo E8400 @ 3.00GHz 2242

The values are some sort of comparable index

One core in the E8400 is roughly twice as fast as the Pentium4

[wayner]

Originally Posted by Neo

One core in the E8400 is roughly twice as fast as the Pentium4

You are correct in the CPUs. That makes sense - I wasn't sure exactly what the differences are between a P4 and a C2D but that explains it. Maybe I should think about a different PC for my server as I use transcoding a fair bit, or perhaps I can just use SJQ to use another app to do conversion on another PC on my LAN.