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View Full Version : Is this normal or is it a problem


deadlyromio
5th November 2007, 10:34
Hi all, haven't visited for awhile and found this new thing called MeGui, seems like a very interesting development and trying it out.

I'm using the latest dev build as of this post and had a video encoding that doesn't seem right.

Problem:

I used megui to encode a xvid video to mp4.

The video frame rate is 29.970.

The encoded video is 29.971.

Is that normal for megui. I had a separate sound that I was going to mux in but it would be off.

I tried several times in different settings and was the same.
I tried the autoencode with sound and sound was off.

I tried another file that had sound in it already and that was off.

Though I didn't look deeper sound would play before person was speaking.

Here is the log for a video only encode.


Log for job job13

Job commandline: "C:\Program Files\megui\tools\x264\x264.exe" --qp 26 --nf --no-cabac --subme 1 --no-chroma-me --analyse none --me dia --merange 8 --threads auto --thread-input --sar 1:1 --progress --no-psnr --no-ssim --output "C:\Documents and Settings\me\Desktop\test.mp4" "C:\Documents and Settings\me\Desktop\test.avs"
avis [info]: 240x176 @ 29.97 fps (113106 frames)
x264 [info]: using SAR=1/1
x264 [info]: using cpu capabilities: MMX MMXEXT SSE SSE2 SSSE3
mp4 [info]: initial delay 0 (scale 2997)
x264 [info]: slice I:743 Avg QP:23.00 size: 7957
x264 [info]: slice P:112363 Avg QP:26.00 size: 1292
x264 [info]: mb I I16..4: 14.0% 0.0% 86.0%
x264 [info]: mb P I16..4: 1.6% 0.0% 0.0% P16..4: 56.1% 0.0% 0.0% 0.0% 0.0% skip:42.4%
x264 [info]: kb/s:320.2

encoded 113106 frames, 75.65 fps, 320.23 kb/s

This is a CQ job so there's no desired bitrate. Obtained video bitrate: 321 kbit/s


End of log for job3
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Dark Shikari
5th November 2007, 11:02
The difference in the framerate there is so minimal that the skew after 1 minute would be roughly a millisecond--it would only be detectable in a full-length film or such, where by the end the skew might be 0.2 seconds or so.

If the skew is just as bad at the beginning, it sounds as if there is a sound delay you're not accounting for.