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25th October 2009, 00:43 | #61 | Link | ||||
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If high-speed footage is used in some standard production, it is either played back in slow motion or frames are skipped or combined. Man, I wish interlacing would die already. |
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25th October 2009, 01:24 | #62 | Link | |
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your forgetting to include the near future 2K and 4K modes, shouldnt you be planning, or indeed already adding in these options today for testing etc, to be ready when the consumer kit arrives on mass from the far east OEMs etc, the DVB org already demoed (PAL) 2K and 4K end to end transmission, Encoded with H.264 last year or perhaps the year before , i forget now. Last edited by popper; 25th October 2009 at 01:37. |
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25th October 2009, 08:48 | #63 | Link |
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From a nomenclature's point of view, 1080i60 is the proper name and makes much more sense than 1080i30. That way, you have xxxx[p|i]yyy, where xxxx is the vertical resolution, yyy is the temporal resolution, and 'i' says the image has been irremediably destroyed.
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25th October 2009, 15:34 | #64 | Link |
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Well, as long as we can agree that 1080i/N and 1080/I/N refer solely to frame rates, it's not all fubar yet
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Jedes Herz ist eine revolutionäre Zelle Last edited by klinika; 25th October 2009 at 15:45. |
10th December 2009, 17:02 | #66 | Link |
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I agree with rapscallion, standalone AVCHD device settings would be nice.
Regarding bluray: How is the maxrate of 15 Mbit/s achieved when encoding with x264 and not using CBR? Is it enough to set vbvmaxrate to 15 Mbit/s? There still may be short peaks above 15 Mbit/s? But on the other hand why should anybody want to do that for bluray? Maybe if stored on a slow medium (like DVD @ 1x DVD speed) I guess the safe way to do it is to just use one second keyint and let the bitrate peak above 15 Mbit/s if needed to?
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10th December 2009, 22:38 | #67 | Link | |||
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11th December 2009, 09:54 | #68 | Link |
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Is it possible to somehow use max keyint of 2 seconds only on the parts where bitrate is below 15 Mbit/s and use max keyint of 1 second only on the difficult parts where the lower 15 Mbit/s VBV limits are exceeded? Maybe do it as an extra pass of the encoder where those parts are re-encoded if necessary to achieve a better quality. It would be a nice feature of a bluray compatible h.264 encoder.
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11th December 2009, 10:55 | #69 | Link | |
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6th January 2010, 15:22 | #70 | Link |
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Well , based on the findings of this threat http://forum.doom9.org/showthread.php?t=141628 and also based on my own tests I can confirm that the psp supports:
*Reference Frames: 3 *Mixed References: yes *B-Frames: 16 ( I have test it with --no-b-adapt --scenecut=-1 --bframes 16 so it really supports it) *Direct Prediction: Auto *Weighted B-Frames: yes *CABAC: yes *Motion Estimation: SATD Exhaustive *Trellis: 2 *ME Range: 32 *Subpixel Refinement: 9 *Analysis: All *8x8 DCT: No! *No Fast-P-Skip: yes *No DCT-Decimate: yes *also vbv-maxrate is not needed at all, there is no limit on the psp *Deblocking: yes I also can add that the most recent video that I have converted with these settings and crf 22 is this one http://keithschofield.com/justice/ adding the tune film preset , and it looks very good, but it kind of lags a little, but it may be just because of that video, I have not tested more videos recently. I also wanna add that I convert all my videos to 480x272 for space reasons(I have only a 8gb memorystick), but I am pretty sure that the psp can support more resolutions I may also help with the iphone settings since my brother have one.. Last edited by fleon; 6th January 2010 at 16:18. |
6th January 2010, 17:35 | #71 | Link |
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I might as well update the specs for the Archos 5 Android since it has been vastly improved.
I still don't have one due to Bestbuy and Futureshop not wanting to restock them, but these are figures that have been tested to work. These are not the limits. I'll find the limits when I get one hopefully. Under 800x448, it can support every feature in x264's high profile including weightp 2, bframe 16 and ref frame 16. It supports 16 b frames for all resolution up to 1280x720. Ref frame limits are unknown, but it can support 8 on a 1280x544 (or 720, I forgot, but one of those two) video. Maximum bitrate is unknown at 1280x720, but I guess it is at least 15Mbps because people say that videos with an average bitrate of 7Mbps plays smoothly. 30fps is having sync issues no matter what bitrate. Hopefully it will get fixed soon. |
14th January 2010, 08:51 | #72 | Link |
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my encode wont play on psp , what do you think is wrong with my settings?
x264 settings program --profile main --pass 2 --bitrate 384 --stats ".stats" --slow-firstpass --thread-input --deblock -4:-4 --b-adapt 2 --rc-lookahead 60 --merange 24 --me umh --direct auto --subme 9 --partitions p8x8,b8x8,i4x4 --no-8x8dct --no-dct-decimate --no-fast-pskip --output "output" "input" avisynth import("C:\Program Files (x86)\AviSynth 2.5\plugins\SeeSaw.avs") DirectShowSource("D:\RaveN\My Videos\Film\video\video.mkv", fps=23.976, convertfps=true) crop( 0, 2, 0, -2) a= last b=a.DeGrainMedian(limitY=3,limitUV=4,mode=2) SeeSaw(a,b, NRlimit=3, NRlimit2=4, Sstr=1.5, Slimit=5, Spower=5, Sdamplo=6, Szp=16, sootheS=20) Spline64Resize(480,200) TextSub("D:\RaveN\My Videos\Presets\subtitle.ass", 1) Last edited by ninja_racoon; 14th January 2010 at 11:09. |
16th January 2010, 19:03 | #77 | Link |
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Does anyone know what are the specs for the Nokia 5800? From what little I recall, it only supported low resolution x264 encodes. I have one, so I can test whatever you want.
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17th January 2010, 01:59 | #78 | Link |
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Yes, the PSP only accepts level 3 files, auto set it to 4 or 4.1 in my tests if I remember correctly. So you should set it to 3 for it to work (and don't forget -ref 3 if you use a slower profile with more ref frames or tune animation).
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