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31st July 2008, 01:09 | #2 | Link |
Mr. Sandman
Join Date: Sep 2003
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optimal = best = not allowed here.
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31st July 2008, 01:16 | #3 | Link |
Registered User
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Location: ::1
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I disagree... optimal is a perfectly good question. Like if I asked what's optimal for anime. Optimal would probably be more refs, less merange, lower beta deblocking, higher alpha deblocking.
Anyways, OP, I would recommend off the top of my head that more refs will probably help a lot, probably p4x4 blocks will help more than usual, and it might be good to increase alpha deblocking for less mosquito noise and blocks / decrease beta deblocking for better retention of sharp lines. Also, try to keep a high resolution, preferably anamorphic. Other than that, experiment. |
31st July 2008, 01:24 | #4 | Link | |
x264 developer
Join Date: Sep 2005
Posts: 8,666
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Quote:
1. No AQ, since everything is either "line" or "flat color". 2. Subpartitions probably aren't that useful--multiref might be useful. 3. A good motion search is likely very important if you're going to be moving around windows a lot. 4. Trellis is probably a good idea. |
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31st July 2008, 07:50 | #6 | Link |
Registered User
Join Date: Jul 2008
Posts: 13
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okay im reading this....its a start http://www.digital-digest.com/articl...ons_page2.html
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31st July 2008, 08:36 | #7 | Link |
brontosaurusrex
Join Date: Oct 2001
Posts: 2,392
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yari: really depends on what kind of screencats it is, also depends on how pretty do you want it, i did this 'guide' few years ago, using vp6, not pretty, but readable imho (and i didn't bother with settings much);
http://somestuff.org/video_guides/al...ty_640_480.flv (mute) a. this was captured with http://camstudio.org/ b. then avisynth for resizing, frame-rate changes c. vp6 (while today you 'should' use x264 if target is flash)
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certain other member Last edited by smok3; 31st July 2008 at 14:54. |
31st July 2008, 10:39 | #8 | Link |
brontosaurusrex
Join Date: Oct 2001
Posts: 2,392
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i found the original avi clip, re-encoded by today's standards, again didn't bother with cmd much;
http://somestuff.org/flashAVC/flvpla...y-x800y600.mp4 (x264 --pass 1 --bitrate 480 --stats "" --bframes 1 --subme 1 --analyse none --me dia --progress --no-psnr --filter "0,0" --output NUL "" x264 --pass 2 --bitrate 480 --stats "" --ref 5 --bframes 1 --subme 6 --b-rdo --analyse p8x8,b8x8,i4x4,p4x4 --progress --no-psnr --filter "0,0" --output "" "") x264 thrown an error about converging the 1st pass curve, but still manages to get throught 2nd pass with incredibly low bitrate of 175 kbps.
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certain other member Last edited by smok3; 31st July 2008 at 10:41. |
31st July 2008, 14:49 | #9 | Link |
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@smok3 -
1) Do you know offhand what x264 settings are compatible with streaming/embedding x264 in .mp4 with Flash Player or JW? Would it be similar to a Quicktime compatible setting? 2) I see you are using the JW media player; do you know of any differences in cmopatibility between JW and Adobe's player? Sorry for hijacking the thread |
31st July 2008, 14:51 | #10 | Link | |
x264 developer
Join Date: Sep 2005
Posts: 8,666
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Quote:
Adobe has a player? |
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31st July 2008, 14:51 | #11 | Link |
brontosaurusrex
Join Date: Oct 2001
Posts: 2,392
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1) (almost) anything goes, compatibility is much better than with quicktime
2) JW is using adobe flash to operate (one layer above the flash that is), what is the question?
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certain other member Last edited by smok3; 31st July 2008 at 14:56. |
31st July 2008, 21:33 | #13 | Link | |
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Quote:
thank you. |
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1st August 2008, 03:14 | #16 | Link |
Registered User
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ah i missed that one. thank you.
this is bloody amazing quality! what was the original video size? i see that 640x480 is around 1.5mb. i wonder how big the 800 is.... if i were to not use x264 library, how much can i expect? i did a quick experiment but i found that using x264, although cpu intensive (fan was making lot of noise) and taking longer to encode, it resulted in superioir quality and 20%~30% smaller file size compared to just encoding to flv in ffmpeg. is this like for any type of videos out there ? |
1st August 2008, 03:31 | #18 | Link | |
x264 developer
Join Date: Sep 2005
Posts: 8,666
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Quote:
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Follow x264 development progress | akupenguin quotes | x264 git status ffmpeg and x264-related consulting/coding contracts | Doom10 Last edited by Dark Shikari; 1st August 2008 at 03:39. |
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17th January 2013, 14:59 | #19 | Link |
Registered User
Join Date: Oct 2009
Posts: 930
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Is there anything faster than the ultrafast preset?
I tried this: Code:
ffmpeg -f dshow -i video=screen-capture-recorder -acodec copy -vcodec libx264 -preset ultrafast -crf 0 out.mkv (Of course audio didn't work. Could anyone tell me how to record the sounds too?) |
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