Super Slow AVS to M2V

[Subblue586]

Alright, first off - I'm new....so, hi!

And now the problem,

So I recently downloaded FAVC and have been trying to convert a 1.8GB MP4 file to DVD. I have been having a couple of issues with the process:

1. During the conversion from MP4 to AVS I get two error messages: "[mov,mp4,m4a,3gp,3g2,mj2 @ 012F6DC8]edit list not starting at 0, a/v desync might occur, patch welcome" and then "h264 @ 012DCE30]Cannot parallelize deblocking type 1, decoding such frames in sequential order". Nevertheless, the process completes in about 25 minutes and HCEnc opens up. I have these settings at Standard and I changed it to use multi-core.

2. Here's where I noticed something strange. My video conversion from AVS to M2V was going to take about 10 hours according to HCEnc. Is this normal?

Thanks, and I did search the forums/Google - if I missed something I'm sorry.

-Josh

[midders]

Yes it is normal. Reencoding video basically comes down to billions of floating point calculations. Starting with an HD source will make it take even longer as the number of calculations increases exponentially with framesize.

You can safely ignore the error messages, as long as the output looks OK.

Slainte

midders

[guns1inger]

A couple of things to consider

1. FAVC has not been updated in some time. The version of HCEnc it is using is now several updates behind the times. Each update of HCEnc has included some speed improvements, so you might consider looking at al alternate tool. I like AVStoDVD, which also uses HCEnc, but offers more features than FAVC, and is still updated on a regular basis.

2. You have an older, single core CPU. When you get to encoding, CPU is the bottleneck. More cores, faster cores, will make dramatic improvements to your encoding times.

3. Make sure you have a recent build of FFDShow, which will most likely include better and faster decoding of the H264 streams.

[Subblue586]

Thank you both for the replies and advice.

To midders - It is a 1280x720 video, so that explains it.

To guns1inger - I will get AVStoDVD and FFDShow and give it shot. Also, the Pentium D is a dual core. I did some further testing too and when I have 2 CPU cores enabled for encoding, my processor hits 50%. This made it seem like I have 4 cores...and it turns out, I kinda do. After doing some research I found that with Hyper Threading enabled, it creates 2 virtual cores. So, if I were to set the number of cores to 4, it would use 100% of the power.

Thanks again,
Shua

[guns1inger]

If you use AVStoDVD with the latest HCEnc (included) then it will use all four cores. It should average around 70 - 80% across all four. Be aware though that unlike having four true cores, hyper-threading only gives you a 10 - 15% increase in performance under real-world conditions. It is worth enabling, but don't expect it to double your output, because it won't. The virtual cores are just a fancy way of better managing empty CPU cycles.