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16th June 2005, 12:59 | #1004 | Link | |
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IMO the mpeg4 ASP codecs cannot come close in quality, x264 is already better than them, sometimes the difference is huge. I don't know if it's safe to use, but made the decision a few months ago, i exclusively use x264 for my encodings since then, and i've never experienced any problem with it. |
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16th June 2005, 15:12 | #1005 | Link | |
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On Discworld it is clearly recognized that million-to-one chances happen 9 times out of 10. If the hero did not overcome huge odds, what would be the point? Terry Pratchett - The Science Of Discworld |
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16th June 2005, 16:47 | #1006 | Link |
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hello
In vfw, the multipass/first-pass *seems* to be done with a constant bitrate (The standalone GUI writes a batch command with a --bitrate, for the 1st pass) Maybe i'm wrong but i think it should be better with a quant constant. |
16th June 2005, 17:15 | #1007 | Link |
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A bit stupid request, but... CLI applications usually allow to redirect stdout into text file. Could such a feature be implemented for CLI x264 (say, the command 'x264 -h > options.txt' has to create 'options.txt' with a full list of options)?
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16th June 2005, 17:27 | #1008 | Link |
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hello!
I have a problem(if it's a problem) : after encode with x264, I mux the video in the matroska container via mkvmerge.But when I look the framerate in the properties (with matroskaprop) I am a value like 24.994...fps for 25 fps for my input video. moreover, when I try to do a caption and go to a precisely frame with xvid and x264 I don't obtain the same frame : there are a shift of 2 or 3 frame. for info, xvid has the good framerate (25.000fps) and I encode with cli version with avs input and mp4 output. my command lines : x264 --pass 1 --bitrate 800 --ref 1 --bframe 5 --direct temporal --weightb --b-pyramid --analyse none --me dia --subme 1 --progress -o NUL: "input.avs" x264 --pass 2 --bitrate 800 --ref 5 --subme 6 --bframe 5 --direct temporal --weightb --b-pyramid --8x8dct --analyse all --progress -o "output.mp4" "input.avs" |
16th June 2005, 19:36 | #1009 | Link | ||
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16th June 2005, 19:42 | #1010 | Link |
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Another way that works for me:
x264 -h 2> options.txt Reason: You are allowed to use file handle numbers in front of redirectors. 0< = stdin (< = 0<) 1> = stdout (> = 1>) 2> = stderr |
17th June 2005, 13:50 | #1016 | Link |
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For 1 pass: Either CQ, or average bitrate. But both is not possible for 1-pass. The reason is:
With only 1 pass, an encoder would not know which quality / quantizer it has to use to achieve a desired bitrate. This can only be calculated for a 2nd pass. A CQ tester is not really an exception: I would call that a "1.5 pass mode"... |
17th June 2005, 16:45 | #1017 | Link | |
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mencoder somevideo.vob -of rawvideo -ovc raw -vf swapuv -nosound -o myrawvideo.fifo Last edited by yokem55; 17th June 2005 at 16:51. |
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18th June 2005, 00:39 | #1018 | Link |
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Just realised that width and height still have to be MOD 16. Do you plan to implement a workaround to circumvent this limitation, e.g. in a similar way as e.g. in XviD?
(AFAIR, often some kind of "mirroring" is used to extend the video area to the next multiple, if necessary.) |
18th June 2005, 01:16 | #1019 | Link | |
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18th June 2005, 04:21 | #1020 | Link | |
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