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Old 22nd March 2008, 09:53   #1  |  Link
patxitron
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Is 1080@25fps AVC part of BD standard? [solved]

Hello all.

I'm trying to make a BD9 of some videos from my Canon HV20. These videos were taken in progressive mode (1440x1080@25fps) and then encoded with x264 (using meGUI and the SA-Blu-ray profile with 15300kbps for maximum quality) however neither scenarist nor encore CS3 accepts it. Encore says that the video must be reencoded and scenarist says "Error Content: Value of FrameRateCode is not supported in the BD standard."

I tried some variations in the SA-Blu-ray such activating interlaced encoding, other matrix... even reescaling the video to 1920x1080 without success.

I will apreciate any advice on this. Thanks.

Best regards.

Last edited by patxitron; 22nd March 2008 at 16:14. Reason: Solved
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Old 22nd March 2008, 11:25   #2  |  Link
bigotti5
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1440*1080 @ 50i (50 fields, 25 frames) is supported...
Quote:
using meGUI and the SA-Blu-ray profile with 15300kbps for maximum quality
interlaced encoding is required
added "--sar 16:9" to commandline?

Here is a sample cmdline, accepted by Scenarist, dont know for Encore

Quote:
--pass 2 --bitrate 8000 --stats ".stats" --level 4.1 --keyint 24 --min-keyint 1 --ref 3 --mixed-refs --bframes 2 --b-rdo --bime --weightb --direct auto --subme 6 --analyse p8x8,b8x8,i4x4,i8x8 --8x8dct --ipratio 1.1 --pbratio 1.1 --vbv-bufsize 30000 --vbv-maxrate 38000 --qcomp 0.5 --me umh --threads auto --thread-input --progress --no-psnr --no-ssim --interlaced --output "output" "input" --mvrange 511 --aud --nal-hrd --sar 16:9
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Old 22nd March 2008, 11:25   #3  |  Link
Glorioso
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I think it must be in 24fps, try this avs in MEGui:
Code:
DirectShowSource("C:\video.m2ts",fps=23.9759856527702,audio=false)
The Jamos method!
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Old 22nd March 2008, 11:39   #4  |  Link
patxitron
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Thank you. I will try the former first and the latter if it doesn't work.

Best regards.
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Old 22nd March 2008, 16:13   #5  |  Link
patxitron
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@bigotti5: the flags you posted worked. In fact it seems that it is necesary set both the ar 16:9 and the interlace options.

Thank you again.
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Old 22nd March 2008, 17:38   #6  |  Link
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@bigotti5 & patxitron

I think (not 100% sure) that you can set "--keyint 50" instead of "keyint 24" in the above settings.
BD specs declare I frames at 1sec distance.
"keyint 24" is appropriate for 24fps material so logic says "keyint 50" should be acceptable for 50i.
You can gain a bit of quality this way.

I am interested for the results if you test this.
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Old 22nd March 2008, 18:17   #7  |  Link
bigotti5
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If the max bitrate does not exceed 15 Mbps GOPs up to two seconds are allowed on BD.
If you use more than 15 Mbps you have to keep to one second GOPs or less.
In our case (bitrate < 15 Mbps) "--keyint 50" will be ok.
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Old 22nd March 2008, 18:58   #8  |  Link
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@ bigotti : Thanks

Did you tested (for BD compliance) any 50i streams with "--keyint 50" or we are at a theoretical state needing practical validation.
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Old 22nd March 2008, 19:08   #9  |  Link
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Scenarist accepts "--keyint 50", not tested on SA Player.

Btw 50i mean 25 fps not 50 fps (50i == 50 fields == 25 frames)
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Old 22nd March 2008, 19:22   #10  |  Link
Dethis
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Quote:
Originally Posted by bigotti5 View Post
Scenarist accepts "--keyint 50", not tested on SA Player.

Btw 50i mean 25 fps not 50 fps (50i == 50 fields == 25 frames)
So its (partly) fine.

the key is how x264 interpretes this "keyint 50" when encoding at 50i.

In case of a related test on a SA player i (we) would like to read the results.
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Old 22nd March 2008, 19:52   #11  |  Link
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x264 sets GOP length to max 50 frames in case of keyint=50
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Old 22nd March 2008, 20:14   #12  |  Link
bond
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1080p@25fps is not supported by bluray??? why is that?

50i is not 25p, its 50i and 50i means less quality compared to encoding at 25p
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Old 22nd March 2008, 20:21   #13  |  Link
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Quote:
1080p@25fps is not supported by bluray??? why is that?
1440x1080@25p is not supported, 50i only
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Old 22nd March 2008, 20:30   #14  |  Link
bond
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indeed, it only does 1080x24p/23.976p
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Old 29th March 2008, 12:31   #15  |  Link
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Quote:
1440x1080@25p is not supported, 50i only
My PS3 plays 1440x1080 and 1920x1080@25p without problems in bluray structure I will do another test if 1080p 50fps is also supported.
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Old 29th March 2008, 18:16   #16  |  Link
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please people be careful... even tho the ps3 is the most popular bluray player. it is also the most forgiving of input streams. try not to give people the impression that what it plays, every other player will play. also remember that the author of this post is using a pro compiler that actually checks for compliancy before muxing, not an app that would mux a 1696p stream if you asked it to.
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Old 29th March 2008, 19:36   #17  |  Link
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Quote:
1696p stream if you asked it to.
PS3 only accepts 720p and 1080p in bluray. So not everything is supported by PS3
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Old 29th March 2008, 20:22   #18  |  Link
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Quote:
Originally Posted by Atak_Snajpera View Post
PS3 only accepts 720p and 1080p in bluray. So not everything is supported by PS3
LOL

I said the muxing 'app' actually. Id have be very surprised if the ps3 took 1696p
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Old 30th March 2008, 13:18   #19  |  Link
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Quote:
Originally Posted by Atak_Snajpera View Post
PS3 only accepts 720p and 1080p in bluray. So not everything is supported by PS3
Really? I burned a blu-ray file spec with a 1088i/50fps stream and the ps3 played it perfectly. Only plays perfect on disc though and not from the XMB.
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Old 14th April 2008, 21:34   #20  |  Link
morph166955
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So just to clarify since I'm attemping to do something similar, is it only that Scenarist wont accept 1440x1080p25 or is there also problems with 1920x1080p25? I'm trying to push a 1920x1080 feed to it and its also complaining about the FrameRateCode. Works perfectly if I set x264 to give me a 24fps output but not at 25fps. My problem is that the audio is designed for 25fps and when I try to slow it down for 24fps it gets weird pops and clicks that just sound horrible. Is there any way to create a compliant 25FPS 1080p video for a BluRay that will play in more then just a PS3 (we have Sony BD players at work that these must play on).
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