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• How to change audio frame rate in FFMPEG ?

  23 mars 2019, par Sasidharan S

  I am trying to change audio frame from 43.066 FPS (1024 SPF) to 23.438 FPS (2048 SPF) but no luck.

  code tried :

  ffmpeg -i 1.mp4 -b:v 2000k -vcodec libx264 -x265-params keyint=50:scenecut=0 -preset fast -pix_fmt yuv420p -profile:v main -level 3.1 -r 25 -s:v 1280x720 -ac 2 -c:a aac -b:a 128k -ar 48000 -aframes 23.438 HD2_500_500.mp4

  Error :

  Expected int64 for frames:a

• FFMPEG extracting 1 second resized with copy codec

  28 avril 2019, par boblapointe

  How can I extract 1 second ( using fast seek ) from a video, resize it, using vp9 ? I always get the same errors. Here are the bare bone commands I’m trying :

  ffmpeg -ss 00:00:10 -i test.webm -to 00:00:01 -filter:v "scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease" -c:v libvpx-vp9 -y output.webm

  It returns :

  "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)

  After playing around I realize that this will work :

  ffmpeg -ss 00:00:10 -i test.webm -to 00:00:01 -c copy -y output.webm

  Not ideal but at least it works, so I add the filter :

  ffmpeg -ss 00:00:10 -i test.webm -to 00:00:01 -filter:v "scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease" -c copy -y output.webm

  Ant then I get :

  "Filtering and streamcopy cannot be used together."

  I’ve tried all kinds of combinations, unsuccessfully. Any hint would be appreciated. Thank you

  ---

  Here is the full log of the first command :

      ffmpeg version 3.4.4-0ubuntu0.18.04.1 Copyright (c) 2000-2018 the FFmpeg developers
        built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
        configuration : —prefix=/usr —extra-version=0ubuntu0.18.04.1 —toolchain=hardened —libdir=/usr/lib/x86_64-linux-gnu —incdir=/usr/include/x86_64-linux-gnu —enable-gpl —disable-stripping —enable-avresample —enable-avisynth —enable-gnutls —enable-ladspa —enable-libass —enable-libbluray —enable-libbs2b —enable-libcaca —enable-libcdio —enable-libflite —enable-libfontconfig —enable-libfreetype —enable-libfribidi —enable-libgme —enable-libgsm —enable-libmp3lame —enable-libmysofa —enable-libopenjpeg —enable-libopenmpt —enable-libopus —enable-libpulse —enable-librubberband —enable-librsvg —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libspeex —enable-libssh —enable-libtheora —enable-libtwolame —enable-libvorbis —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx265 —enable-libxml2 —enable-libxvid —enable-libzmq —enable-libzvbi —enable-omx —enable-openal —enable-opengl —enable-sdl2 —enable-libdc1394 —enable-libdrm —enable-libiec61883 —enable-chromaprint —enable-frei0r —enable-libopencv —enable-libx264 —enable-shared
        libavutil      55. 78.100 / 55. 78.100
        libavcodec     57.107.100 / 57.107.100
        libavformat    57. 83.100 / 57. 83.100
        libavdevice    57. 10.100 / 57. 10.100
        libavfilter     6.107.100 /  6.107.100
        libavresample   3.  7.  0 /  3.  7.  0
        libswscale      4.  8.100 /  4.  8.100
        libswresample   2.  9.100 /  2.  9.100
        libpostproc    54.  7.100 / 54.  7.100
      Splitting the commandline.
      Reading option ’-ss’ ... matched as option ’ss’ (set the start time offset) with argument ’00:00:10’.
      Reading option ’-i’ ... matched as input url with argument ’test.webm’.
      Reading option ’-to’ ... matched as option ’to’ (record or transcode stop time) with argument ’00:00:01’.
      Reading option ’-filter:v’ ... matched as option ’filter’ (set stream filtergraph) with argument ’scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease’.
      Reading option ’-c:v’ ... matched as option ’c’ (codec name) with argument ’libvpx-vp9’.
      Reading option ’-y’ ... matched as option ’y’ (overwrite output files) with argument ’1’.
      Reading option ’-v’ ... matched as option ’v’ (set logging level) with argument ’debug’.
      Reading option ’output.webm’ ... matched as output url.
      Finished splitting the commandline.
      Parsing a group of options : global .
      Applying option y (overwrite output files) with argument 1.
      Applying option v (set logging level) with argument debug.
      Successfully parsed a group of options.
      Parsing a group of options : input url test.webm.
      Applying option ss (set the start time offset) with argument 00:00:10.
      Successfully parsed a group of options.
      Opening an input file : test.webm.
      [NULL @ 0x55ce679f8920] Opening ’test.webm’ for reading
      [file @ 0x55ce679f9340] Setting default whitelist ’file,crypto’
      [matroska,webm @ 0x55ce679f8920] Format matroska,webm probed with size=2048 and score=100
      st:0 removing common factor 1000000 from timebase
      [matroska,webm @ 0x55ce679f8920] Before avformat_find_stream_info() pos : 566 bytes read:32768 seeks:0 nb_streams:1
      [matroska,webm @ 0x55ce679f8920] All info found
      [matroska,webm @ 0x55ce679f8920] After avformat_find_stream_info() pos : 72449 bytes read:72449 seeks:0 frames:1
      Input #0, matroska,webm, from ’test.webm’ :
        Metadata :
          ENCODER : Lavf57.83.100
        Duration : 00:00:15.03, start : 5.016000, bitrate : 1146 kb/s
          Stream #0:0(eng), 1, 1/1000 : Video : vp9 (Profile 0), 1 reference frame, yuv420p(tv), 1280x720, 0/1, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 1k tbc (default)
          Metadata :
            DURATION : 00:00:15.025000000
      Successfully opened the file.
      Parsing a group of options : output url output.webm.
      Applying option to (record or transcode stop time) with argument 00:00:01.
      Applying option filter:v (set stream filtergraph) with argument scale=min(iw\,1280):min(ih\,720):force_original_aspect_ratio=decrease.
      Applying option c:v (codec name) with argument libvpx-vp9.
      Successfully parsed a group of options.
      Opening an output file : output.webm.
      [file @ 0x55ce67b1e820] Setting default whitelist ’file,crypto’
      Successfully opened the file.
      detected 8 logical cores
      Stream mapping :
        Stream #0:0 -> #0:0 (vp9 (native) -> vp9 (libvpx-vp9))
      Press [q] to stop, [?] for help
      cur_dts is invalid (this is harmless if it occurs once at the start per stream)
          Last message repeated 1 times
      [matroska,webm @ 0x55ce679f8920] first_dts 5016 not matching first dts 10395 (pts 10395, duration 41) in the queue
      cur_dts is invalid (this is harmless if it occurs once at the start per stream)
          Last message repeated 6 times
      [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’w’ to value ’min(iw,1280)’
      [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’h’ to value ’min(ih,720)’
      [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’force_original_aspect_ratio’ to value ’decrease’
      [Parsed_scale_0 @ 0x55ce67a7c520] Setting ’flags’ to value ’bicubic’
      [Parsed_scale_0 @ 0x55ce67a7c520] w:min(iw,1280) h:min(ih,720) flags :’bicubic’ interl:0
      [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’video_size’ to value ’1280x720’
      [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’pix_fmt’ to value ’0’
      [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’time_base’ to value ’1/1000’
      [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’pixel_aspect’ to value ’1/1’
      [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’sws_param’ to value ’flags=2’
      [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] Setting ’frame_rate’ to value ’24000/1001’
      [graph 0 input from stream 0:0 @ 0x55ce67a7cea0] w:1280 h:720 pixfmt:yuv420p tb:1/1000 fr:24000/1001 sar:1/1 sws_param:flags=2
      [format @ 0x55ce67ad7d60] compat : called with args=[yuv420p|yuva420p|yuv422p|yuv440p|yuv444p|gbrp]
      [format @ 0x55ce67ad7d60] Setting ’pix_fmts’ to value ’yuv420p|yuva420p|yuv422p|yuv440p|yuv444p|gbrp’
      [AVFilterGraph @ 0x55ce67aec740] query_formats : 6 queried, 5 merged, 0 already done, 0 delayed
      [Parsed_scale_0 @ 0x55ce67a7c520] w:1280 h:720 fmt:yuv420p sar:1/1 -> w:1280 h:720 fmt:yuv420p sar:1/1 flags:0x4
      [libvpx-vp9 @ 0x55ce67b32200] v1.7.0
      [libvpx-vp9 @ 0x55ce67b32200] —prefix=/usr —enable-pic —enable-shared —disable-install-bins —disable-install-srcs —size-limit=16384x16384 —enable-postproc —enable-multi-res-encoding —enable-temporal-denoising —enable-vp9-temporal-denoising —enable-vp9-postproc —target=x86_64-linux-gcc
      [libvpx-vp9 @ 0x55ce67b32200] vpx_codec_enc_cfg
      [libvpx-vp9 @ 0x55ce67b32200] generic settings
        g_usage :                      0
        g_threads :                    8
        g_profile :                    0
        g_w :                          320
        g_h :                          240
        g_bit_depth :                  8
        g_input_bit_depth :            8
        g_timebase :                   1/30
        g_error_resilient :            0
        g_pass :                       0
        g_lag_in_frames :              25
      [libvpx-vp9 @ 0x55ce67b32200] rate control settings
        rc_dropframe_thresh :          0
        rc_resize_allowed :            0
        rc_resize_up_thresh :          60
        rc_resize_down_thresh :        30
        rc_end_usage :                 0
        rc_twopass_stats_in :          (nil)(0)
        rc_target_bitrate :            256
      [libvpx-vp9 @ 0x55ce67b32200] quantizer settings
        rc_min_quantizer :             0
        rc_max_quantizer :             63
      [libvpx-vp9 @ 0x55ce67b32200] bitrate tolerance
        rc_undershoot_pct :            25
        rc_overshoot_pct :             25
      [libvpx-vp9 @ 0x55ce67b32200] decoder buffer model
        rc_buf_sz :                    6000
        rc_buf_initial_sz :            4000
        rc_buf_optimal_sz :            5000
      [libvpx-vp9 @ 0x55ce67b32200] 2 pass rate control settings
        rc_2pass_vbr_bias_pct :        50
        rc_2pass_vbr_minsection_pct :  0
        rc_2pass_vbr_maxsection_pct :  2000
      [libvpx-vp9 @ 0x55ce67b32200] keyframing settings
        kf_mode :                      1
        kf_min_dist :                  0
        kf_max_dist :                  128
      [libvpx-vp9 @ 0x55ce67b32200]
      [libvpx-vp9 @ 0x55ce67b32200] vpx_codec_enc_cfg
      [libvpx-vp9 @ 0x55ce67b32200] generic settings
        g_usage :                      0
        g_threads :                    0
        g_profile :                    0
        g_w :                          1280
        g_h :                          720
        g_bit_depth :                  8
        g_input_bit_depth :            8
        g_timebase :                   1001/24000
        g_error_resilient :            0
        g_pass :                       0
        g_lag_in_frames :              25
      [libvpx-vp9 @ 0x55ce67b32200] rate control settings
        rc_dropframe_thresh :          0
        rc_resize_allowed :            0
        rc_resize_up_thresh :          60
        rc_resize_down_thresh :        30
        rc_end_usage :                 0
        rc_twopass_stats_in :          (nil)(0)
        rc_target_bitrate :            200
      [libvpx-vp9 @ 0x55ce67b32200] quantizer settings
        rc_min_quantizer :             0
        rc_max_quantizer :             63
      [libvpx-vp9 @ 0x55ce67b32200] bitrate tolerance
        rc_undershoot_pct :            25
        rc_overshoot_pct :             25
      [libvpx-vp9 @ 0x55ce67b32200] decoder buffer model
        rc_buf_sz :                    6000
        rc_buf_initial_sz :            4000
        rc_buf_optimal_sz :            5000
      [libvpx-vp9 @ 0x55ce67b32200] 2 pass rate control settings
        rc_2pass_vbr_bias_pct :        50
        rc_2pass_vbr_minsection_pct :  0
        rc_2pass_vbr_maxsection_pct :  2000
      [libvpx-vp9 @ 0x55ce67b32200] keyframing settings
        kf_mode :                      1
        kf_min_dist :                  0
        kf_max_dist :                  128
      [libvpx-vp9 @ 0x55ce67b32200]
      [libvpx-vp9 @ 0x55ce67b32200] vpx_codec_control
      [libvpx-vp9 @ 0x55ce67b32200]   VP8E_SET_CPUUSED :             1
      [libvpx-vp9 @ 0x55ce67b32200]   VP8E_SET_ARNR_MAXFRAMES :      0
      [libvpx-vp9 @ 0x55ce67b32200]   VP8E_SET_ARNR_STRENGTH :       3
      [libvpx-vp9 @ 0x55ce67b32200]   VP8E_SET_ARNR_TYPE :           3
      [libvpx-vp9 @ 0x55ce67b32200]   VP8E_SET_STATIC_THRESHOLD :    0
      [libvpx-vp9 @ 0x55ce67b32200]   VP9E_SET_COLOR_SPACE :         0
      [libvpx-vp9 @ 0x55ce67b32200]   VP9E_SET_COLOR_RANGE :         0
      [libvpx-vp9 @ 0x55ce67b32200]   VP9E_SET_TARGET_LEVEL :        255
      [libvpx-vp9 @ 0x55ce67b32200] Using deadline : 1000000
      Output #0, webm, to ’output.webm’ :
        Metadata :
          encoder : Lavf57.83.100
          Stream #0:0(eng), 0, 1/1000 : Video : vp9 (libvpx-vp9), 1 reference frame, yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 0/1, q=-1—1, 200 kb/s, 23.98 fps, 1k tbn, 23.98 tbc (default)
          Metadata :
            DURATION : 00:00:15.025000000
            encoder : Lavc57.107.100 libvpx-vp9
          Side data :
            cpb : bitrate max/min/avg : 0/0/0 buffer size : 0 vbv_delay : -1
      cur_dts is invalid (this is harmless if it occurs once at the start per stream)
          Last message repeated 120 times
      [out_0_0 @ 0x55ce67ac35a0] EOF on sink link out_0_0:default.
      No more output streams to write to, finishing.
      [webm @ 0x55ce67b2e2a0] get_metadata_duration returned : 15025000
      [webm @ 0x55ce67b2e2a0] Write early duration from recording time = 1000
      [webm @ 0x55ce67b2e2a0] end duration = 0
      [webm @ 0x55ce67b2e2a0] stream 0 end duration = 0
      frame=    0 fps=0.0 q=0.0 Lsize=       1kB time=00:00:00.00 bitrate=N/A speed=   0x
      video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead : unknown
      Input file #0 (test.webm) :
        Input stream #0:0 (video) : 120 packets read (1031599 bytes) ; 112 frames decoded ;
        Total : 120 packets (1031599 bytes) demuxed
      Output file #0 (output.webm) :
        Output stream #0:0 (video) : 0 frames encoded ; 0 packets muxed (0 bytes) ;
        Total : 0 packets (0 bytes) muxed
      Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
      112 frames successfully decoded, 0 decoding errors
      [AVIOContext @ 0x55ce67b2e9a0] Statistics : 13 seeks, 9 writeouts
      [AVIOContext @ 0x55ce67a01660] Statistics : 2137508 bytes read, 4 seeks
  

• Revision 115298 : Si on met un retour chariot (donc une ligne vide) dans Affichage ...

  9 mai 2019, par nicod@… — Log

  Si on met un retour chariot (donc une ligne vide) dans Affichage conditionnel, ça plante tout le javascript généré (en gros ça ferme directement un if ouvrant).
  Ajout d’un trim pour éviter ces cas là (et suppression du deuxième isset, il l’est forcément)
  Merci Anne-Marie pour le signalement :)