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10th August 2009, 20:15 | #1 | Link |
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Has anyone used X264 to produce a replicated BD title?
First of all: I apologize if this question has already been asked. However, I don't think there has ever been a central thread asking this question.
Have any Blu-ray Disc authors out there produced titles encoded using X264 (perhaps one of the various patched versions), and had its output verified and passed by a replication facility? The reason I ask is because in the coming months, I will be working on a retail BD title and if it's possible to use X264, I would absolutely love to do it due to the quality of its output. My other option is the upcoming Netblender DoStudio Workflow Edition, comes with an integrated AVC encoder. Even although at BD bitrates, the differences can be less obvious, I still want to use the absolute best quality option within the allocated budget. The big draw of this is that its output is guaranteed to be compatible. Lastly, to the developers of x264: thank you for this wonderful encoder and everything that you do for free. I realise that as a highly scalable system, BD compliance is not at the top of you priorities in producing an h.264 encoder. But if anyone can pitch in, I'd be very grateful! |
10th August 2009, 20:27 | #2 | Link |
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x264 can't produce streams that are 100% conform to the BD specs, because as far as we know the BD specs say that at least 4 slices are required. But x264 doesn't use slices currently.
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10th August 2009, 20:53 | #4 | Link |
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Could it be the versions found here? I've used it to produce streams that certainly play on the players I have here, but not with consistent success...
http://skystrife.com/x264/?C=M;O=A |
10th August 2009, 21:14 | #5 | Link | ||
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However a H.264 decoder that is strictly limited to the BD specs may fail to decode streams produced by current x264. Consequently a BD authoring software, which checks the H.264 streams against the BD specs (and not against "real" implementations), would have to reject x264's streams. Anyway, as far as I know most (all?) the BD players that exist in reality would handle those streams just fine. It only can't be guaranteed...
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10th August 2009, 22:12 | #7 | Link |
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The patch for 1195 can be found on the mailing list here, but since D_S says "...though the author still hasn't sent to me the version he promised..." I'd think it'd be ok for you to be somewhat wary of it albeit he says he has been using it for a while...
Anyways, nice to hear that people are interested in using x264 with blu-ray manufacturing.
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10th August 2009, 22:21 | #8 | Link | ||
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10th August 2009, 21:12 | #10 | Link |
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Are you telling me that I can't encode a video with x264 in the BD's allowed maximum H.264 settings and it won't play on a Blu-ray player?
Lyris, THANK YOU for choosing x264 to encode your next blu-ray title. After you're done with it, could you tell us the title of the movie you produced? I might buy that Blu-ray just to see what "real" 1080p looks like without low passing. Last edited by Chengbin; 10th August 2009 at 22:36. |
10th August 2009, 22:17 | #11 | Link | |
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Chengbin: I'll gladly share details and the production process once it's out there, yes. However, there are thankfully a lot of unfiltered AVC titles out there - all of the Disney titles I've seen seem to have got through unmolested. Low-passed BD titles are thankfully the exception rather than the norm.
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When you're stamping out thousands of discs for a title that is probably going to get some attention, it "maybe" working fine on "most" BD players isn't enough for me to sleep easy! Nixo: is 4.0 allowed on BD? What are the limitations of it when compared to 4.1? |
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10th August 2009, 22:35 | #13 | Link |
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Very interesting - but according to x264, Level 4.0 has an upper bitrate limit of 25mbps, which I'd like to avoid.
Edit: you got there before me - 4.1 is something I'd really like to use, but your suggestion is one possibility. |
12th August 2009, 04:26 | #14 | Link | |
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Remember Blu-ray's peak bitrate was defined for MPEG-2 applications. It's rather overkill for modern codecs. |
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12th August 2009, 06:05 | #15 | Link | |
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Now take into account we may use H.264 instead of older MPEG-2 and necessary video bitrate can be halved for the same visual quality I suppose. |
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12th August 2009, 13:16 | #16 | Link | |
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12th August 2009, 13:23 | #17 | Link |
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That's probably not the result of the bitrate, but a result of bad encoders and/or bad authoring
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12th August 2009, 14:34 | #18 | Link | |
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Didn't Dark Shikari say even with x264, you need a lot more than 25mbps to reach transparency on 1080p videos (from a master)? Last edited by Chengbin; 12th August 2009 at 14:40. |
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13th August 2009, 10:31 | #19 | Link | |
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http://www.avsforum.com/avs-vb/showthread.php?t=1169645 It's quite ineteresting how VC-1 puts relatively more bits into B frames than AVC encode (even if AVC encode has much highier average bitrate many B frames form VC-1 are bigger). Andrew |
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13th August 2009, 14:45 | #20 | Link | |
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Last edited by benwaggoner; 14th August 2009 at 07:32. Reason: Belated quote fix |
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authoring, blu-ray, compliant, verified, x264 |
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