On 03 Dec 2015, at 19:52, D <dcmhoybdp...@web.de> wrote: > On 03.12.2015 18:37, Henk D. Schoneveld wrote: >> On 03 Dec 2015, at 16:43, D <dcmhoybdp...@web.de> wrote: >> >>> On 02.12.2015 16:12, Moritz Barsnick wrote: >>>> On Wed, Dec 02, 2015 at 15:56:41 +0100, D wrote: >>>>> Maybe it's possible with the -CLI version. I wonder what settings the >>>>> GUI creates and forwards to x264, so I could take them and just add >>>>> "-threads n" and see how it scales. >>>> (lib)x264 inserts information about its complete settings into a >>>> private part of the stream, as a human-readable string. Either use >>>> mediainfo, which exposes this, or simply: >>>> $ strings < file.mp4 | grep x264 >>>> >>>> You will get something like this: >>>> $ strings < someoddfileifound.mp4 | grep x264 >>>> x264 - core 142 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - >>>> http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 >>>> analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 >>>> me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 >>>> fast_pskip=1 chroma_qp_offset=-2 threads=3 lookahead_threads=1 >>>> sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 >>>> constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 >>>> weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 >>>> intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 >>>> qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00 >>>> >>>> Good luck constructing a command line from that. ;-) At least you can >>>> compare settings, perhaps only two or three differ. >>> Thanks for the info. >>> First I tried the GUI, enabled the Advanced tab and added threads but it >>> was ignored. >>> Then I tried the CLI: >>> $ time HandBrakeCLI -i a.mp4 -o b.mp4 -e x264 -q 23 --x264-preset ultrafast >>> --encopts >>> cabac=1:ref=3:deblock=1:0:0:analyse=0x3:0x113:me=hex:subme=7:psy=1:psy_rd=1.00:0.00:mixed_ref=1:me_range=16:chroma_me=1:trellis=1:8x8dct=1:cqm=0:deadzone=21,11:fast_pskip=1:chroma_qp_offset=-2:threads=6:lookahead_threads=1:sliced_threads=0:nr=0:decimate=1:interlaced=0:bluray_compat=0:constrained_intra=0:bframes=3:b_pyramid=2:b_adapt=1:b_bias=0:direct=1:weightb=1:open_gop=0:weightp=2:keyint=300:keyint_min=30:scenecut=40:intra_refresh=0:rc_lookahead=40:rc=abr:mbtree=1:bitrate=1000:ratetol=1.0:qcomp=0.60:qpmin=0:qpmax=69:qpstep=4:ip_ratio=1.40:aq=1:1.00 >>> but about half of the settings were ignored. >> The reason for his is that part of your options are contradictions. >> If you instruct x264 to use -q 23 then rc=abr doesn’t make sense as bitrate >> 1000 doesn’t. Last instruction overrides the former one. q=23 means use the >> amount of bits needed to get this quality level, you can’t afterwards say >> use 1000k as bitrate. It’s the same as asking drive my car at 160km/h but >> don’t use more then 3ltr per 100km distance. It’s one or the other. And >> there are more contradictions in your command, study them and use what is >> important to you. > Thanks. The settings are 1 to 1 taken over from $ strings < b.mp4 | grep x264 > after it was created by HandBrake. Basically also the same what Moritz posted > ("[...] .org/x264.html - options: cabac=1 [...] aq=1:1.00"). Also, removing > "-q" doesn't make it better. Of course not, because bitrate 1000 disables -q 23 >>> Anyway HandBrake is offtopic and I don't think it makes sense to try get it >>> running. Better to get straight x264 running. If someone is interested in >>> porting these commands to x264 that would be nice. I think often adding a >>> "--" before the name should work, I tried this with a few commands, but >>> some commands were unknown to x264. >>> Anyway the scaling, as we figured out a few emails ago, is a x264 problem, >>> not ffmpeg's, so it's "solved" here. Thanks everyone. >>>> Moritz >>>> _______________________________________________ >>>> ffmpeg-user mailing list >>>> ffmpeg-user@ffmpeg.org >>>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user >>> _______________________________________________ >>> ffmpeg-user mailing list >>> ffmpeg-user@ffmpeg.org >>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user >> _______________________________________________ >> ffmpeg-user mailing list >> ffmpeg-user@ffmpeg.org >> http://ffmpeg.org/mailman/listinfo/ffmpeg-user > > _______________________________________________ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/ffmpeg-user
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