Thanks Lou I'm adding a text only "cleaner" version of my original request to facilitate the reading:
"Hi I'm using the following ffmpeg command line as part of a script to generate an H264 1920x1080 representation using the x264 library. I need to create a file with specific x264 opts/params. Until now all the modifiers worked fine, but there is an issue while trying to use the "no-dct-decimate" flag. This is the command line and the resulting x264 options without using the "no-dct-decimate" flag. (decimate=1) ffmpeg -threads "24" -i "$2" $DURATION -r 25/1 -g 50 -keyint_min 23 -crf 19 -threads 24 -me_range 32 -me_method umh -subq 10 -sc_threshold 0 -refs 4 -bf 3 -s $FC_PARAM_extra3 -f mp4 -c:v libx264 -x264-params psy-rd=1.00,0.15:b-pyramid=0:b-adapt=2:8x8dct=1:direct=auto:weightb=1:weightp=2:mbtree=1:qcomp=0.75:qpmin=10:qpmax=51:aq-mode=1:aq-strength=0.80:partitions=p8x8+b8x8+i8x8+i4x4:lookahead-threads=6:subme=10:trellis=2:fast-pskip=1 -rc-lookahead 50 -flags +loop -deblock 0:0 -b:v $FC_PARAM_extra4"k" -maxrate $FC_PARAM_extra4"k" -bufsize $FC_PARAM_extra5"k" -level "$FC_PARAM_extra2" -profile:v "$FC_PARAM_extra1" -movflags +write_colr+faststart -c:a libfaac -ac 2 -ab 128k -ar 48000 -cutoff 18000 -pix_fmt yuv420p -vf "[in]yadif=0:-1:0[cc]"$CROP";[cc]scale="$FC_PARAM_extra3[out] $TARGETASPECTRATIO -y "$3” Resulting in the following x264 options: [libx264 @ 0x147dfc0] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=4 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=10 psy=1 psy_rd=1.00:0.15 mixed_ref=1 me_range=32 chroma_me=1 trellis=2 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-3 threads=24 lookahead_threads=6 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=0 b_adapt=2 b_bias=0 direct=3 weightb=1 open_gop=0 weightp=2 keyint=50 keyint_min=23 scenecut=0 intra_refresh=0 rc_lookahead=50 rc=crf mbtree=1 crf=19.0 qcomp=0.75 qpmin=10 qpmax=51 qpstep=4 vbv_maxrate=5000 vbv_bufsize=10000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:0.80 And this is the variation while trying to activate the "no-dct-decimate" flag and its results: Command line ffmpeg -threads "24" -i "$2" $DURATION -r 25/1 -g 50 -keyint_min 23 -crf 19 -threads 24 -me_range 32 -me_method umh -subq 10 -sc_threshold 0 -refs 4 -bf 3 -s $FC_PARAM_extra3 -f mp4 -c:v libx264 -x264-params psy-rd=1.00,0.15:b-pyramid=0:b-adapt=2:8x8dct=1:direct=auto:weightb=1:weightp=2:mbtree=1:qcomp=0.75:qpmin=10:qpmax=51:aq-mode=1:aq-strength=0.80:partitions=p8x8+b8x8+i8x8+i4x4:lookahead-threads=6:subme=10:trellis=2:fast-pskip=1:no-dct-decimate -rc-lookahead 50 -flags +loop -deblock 0:0 -b:v $FC_PARAM_extra4"k" -maxrate $FC_PARAM_extra4"k" -bufsize $FC_PARAM_extra5"k" -level "$FC_PARAM_extra2" -profile:v "$FC_PARAM_extra1" -c:a libfaac -ac 2 -ab 128k -ar 48000 -cutoff 18000 -pix_fmt yuv420p -vf "[in]yadif=0:-1:0[cc]"$CROP";[cc]scale="$FC_PARAM_extra3[out] $TARGETASPECTRATIO -y "$3" Resulting in the following x264 options [libx264 @ 0x835320] 264 - core 144 r2525 40bb568 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=4 deblock=1:0:0 analyse=0x3:0x113 me=umh subme=9 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=32 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=24 lookahead_threads=2 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=50 keyint_min=23 scenecut=0 intra_refresh=0 rc_lookahead=50 rc=crf mbtree=1 crf=19.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=5000 vbv_bufsize=10000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00 As you can see, even while using the flag/modifier. The decimate value stays as "decimate=1" and it also alters other enconding parameters as "qcomp, qpmin, qpmax, aq, etc" Do you know why is this happening, Am I using another flag which alters the function of the "no-dct-decimate" modifier? Let me know if any other log/information is needed. Any help is greatly appreciated. Thanks El Martes, 15 de marzo, 2016 20:57:50, Lou <[email protected]> escribió: On Tue, 15 Mar 2016 19:49:09 +0000 (UTC) Sebastian Iglesias <[email protected]> wrote: > Thanks for your reply Lou, > I formatted it differently and with clear spacing. Unfortunately it > must have been modified while submitting. Is there any way to edit > the original message? Or do you suggest to delete and re-upload? > Thanks for your help Copies of your message were sent as emails to all mailing list subscribers, so those can't be edited. The mailing list does not use HTML parts of email, so make sure that the plain text component is formatted properly. You can resend in the same thread. Configuring your client to send as text only is probably the easiest method. Please avoid top-posting on this mailing list. _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
