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apoptosis66
1st August 2007, 05:32
I have been working through my video collection and all has been well using the following:

--crf 18 --ref 5 --bframes 3 --b-pyramid --weightb --b-rdo --bime --filter -2:-2 --analyse all --8x8dct --no-fast-pskip --subme 7 --me umh --trellis 1 --mixed-refs --progress --threads auto --no-psnr --thread-input --no-ssim --no-dct-decimate --vbv-maxrate 25000 --aq-strength 1.2 --aq-sensitivity 10 --output

Until I hit (Try not to laugh) Bad Boys 2. Previously I was getting between 30% - 60% of the original dvd size. With Bad Boys 2, the resulting .mp4 is almost 20% larger than the original dvd.

How can this be? Is the directing so chaotic that its too much for x264. Is the action to hot? Has anyone else seen this before?

I have played around with the settings (taking away aq, but that didn't help much). Any suggestions?

simonhowson
1st August 2007, 07:17
Well it does have over 3000 edits, and the camera seems to be constantly moving.

R3Z
1st August 2007, 09:29
Whats the bitrate of the original mpeg2 ?

Manao
1st August 2007, 11:10
Any suggestions?--crf 24

buzzqw
1st August 2007, 11:12
lower the "--aq-strength 1.2 --aq-sensitivity 10" to "--aq-strength 0.5 --aq-sensitivity 10"

BHH

Sagittaire
1st August 2007, 11:17
If you want predict size you must simply use 2 pass encoding. You can't predict size with crf mode.

Atak_Snajpera
1st August 2007, 14:05
If I were you I would change CRF to 22 and also --aq-strength is to high. Lower to 0.5 as buzzqw said. BTW you are wasting time using subme 7, --no-fast-pskip and --no-dct-decimate.

apoptosis66
1st August 2007, 14:50
Thanks guys, I will give the aq and cfr changes a shot and let you know how it goes.

apoptosis66
2nd August 2007, 01:55
Ok, I re-encoded with:

--crf 22 --ref 5 --bframes 3 --b-pyramid --weightb --b-rdo --bime --filter -2:-2 --analyse all --8x8dct --subme 6 --me umh --trellis 1 --mixed-refs --progress --threads auto --no-psnr --thread-input --no-ssim --vbv-maxrate 25000 --aq-strength 0.5 --aq-sensitivity 10 --output

In deed now the file is about 60% of the original dvd. However! Now the video has these bad interlacing lines running through it. This is worst than the file size. Any other ideas?

fields_g
2nd August 2007, 05:30
Interlacing that showed up now?

Wouldn't doubt that your file size is bloated because of this.

Are you sure that the AVS script is the same as before?

Manao
2nd August 2007, 09:27
Post a screenshot

apoptosis66
2nd August 2007, 15:08
Here is the screenshot ... I went back and looked closer and the large file also had interlacing issues. I definitely used the same avs output. Which has the lines. So this must be the source of the large sizes. I have never had this problem before, I just let StaxRip do its thing here. How do I prevent these lines?

foxyshadis
2nd August 2007, 22:09
Check the 'field deinterlace' box on the main page. Stax will take care of the ivtc/deinterlace decision.