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  • ffmpeg encoded hls makes audio and video progressively out of sync

    21 septembre 2020, par eschie

    When trying to encoding a source .mp4 to multiple bitrates and sizes for adaptive HLSv3 playback the resulting audio and video become progressively out of sync. When scrubbing to a later point it seems to reset, and stay in sync.

    



    I'm on the latest ffmpeg 4.2.1 via homebrew-ffmpeg, with the libfdk-aac codec. Note, this was also occurring with ffmpeg 4.1.

    



    ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1-with-options_1 --enable-shared --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libaom --enable-libmp3lame --enable-libopus --enable-libsnappy --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --disable-libjack --disable-indev=jack --enable-opencl --enable-videotoolbox --disable-htmlpages --enable-libfdk-aac --enable-nonfree
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100


    



    The audio and video streams are marginally off, would that cause this problem ?

    



    ffprobe -v error -select_streams v:0 -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 INPUT_FILE.mp4
80.480400

    



    ffprobe -v error -select_streams a:0 -show_entries stream=duration -of default=noprint_wrappers=1:nokey=1 INPUT_FILE.mp4
80.469333

    



    Here is some metadata on the source file :

    



    General
Complete name                            : INPUT_VIDEO.mp4
Format                                   : MPEG-4
Format profile                           : Base Media / Version 2
Codec ID                                 : mp42 (mp42/mp41)
File size                                : 236 MiB
Duration                                 : 1 min 21 s
Overall bit rate mode                    : Variable
Overall bit rate                         : 24.2 Mb/s
Encoded date                             : UTC 2019-08-27 22:13:53
Tagged date                              : UTC 2019-08-27 22:15:15
TIM                                      : 00;00;00;00
TSC                                      : 30000
TSZ                                      : 1001

Video
ID                                       : 1
Format                                   : AVC
Format/Info                              : Advanced Video Codec
Format profile                           : Main@L4.1
Format settings                          : CABAC / 2 Ref Frames
Format settings, CABAC                   : Yes
Format settings, Reference frames        : 2 frames
Codec ID                                 : avc1
Codec ID/Info                            : Advanced Video Coding
Duration                                 : 1 min 21 s
Bit rate mode                            : Variable
Bit rate                                 : 23.8 Mb/s
Maximum bit rate                         : 768 kb/s
Width                                    : 1 920 pixels
Height                                   : 1 080 pixels
Display aspect ratio                     : 16:9
Frame rate mode                          : Constant
Frame rate                               : 29.970 (30000/1001) FPS
Color space                              : YUV
Chroma subsampling                       : 4:2:0
Bit depth                                : 8 bits
Scan type                                : Progressive
Bits/(Pixel*Frame)                       : 0.383
Stream size                              : 233 MiB (99%)
Language                                 : English
Encoded date                             : UTC 2019-08-27 22:13:53
Tagged date                              : UTC 2019-08-27 22:13:53
Color range                              : Limited
Color primaries                          : BT.709
Transfer characteristics                 : BT.709
Matrix coefficients                      : BT.709
Codec configuration box                  : avcC

Audio
ID                                       : 2
Format                                   : AAC LC
Format/Info                              : Advanced Audio Codec Low Complexity
Codec ID                                 : mp4a-40-2
Duration                                 : 1 min 21 s
Source duration                          : 1 min 21 s
Bit rate mode                            : Constant
Bit rate                                 : 317 kb/s
Channel(s)                               : 2 channels
Channel layout                           : L R
Sampling rate                            : 48.0 kHz
Frame rate                               : 46.875 FPS (1024 SPF)
Compression mode                         : Lossy
Stream size                              : 3.10 MiB (1%)
Source stream size                       : 3.10 MiB (1%)
Language                                 : English
Encoded date                             : UTC 2019-08-27 22:13:53
Tagged date                              : UTC 2019-08-27 22:13:53


    



    And the encoding command :

    



    ffmpeg \
-i INPUT_VIDEO \
-dn \
-sn \
-filter_complex \
"[0:v]fps=fps=24000/1001, \
setpts=(PTS-STARTPTS), \
split=12[vsplit1][vsplit2][vsplit3][vsplit4][vsplit5][vsplit6][vsplit7][vsplit8][vsplit9][vsplit10][vsplit11][vsplit12]; \
[vsplit1]scale=-1:1080[video_1080_4.1]; \
[vsplit2]scale=-1:720[video_720_4.1]; \
[vsplit3]scale=-1:720[video_720_3.1]; \
[vsplit4]scale=-1:540[video_540_3.1]; \
[vsplit5]scale=-1:432[video_432_3.1]; \
[vsplit6]scale=-1:270[video_270_3.0]; \
[vsplit7]scale=-1:270[video_270_3.1]; \
[vsplit8]scale=-1:144[video_144_4.1]; \
[vsplit9]scale=-1:144[video_144_3.0]; \
[vsplit10]scale=1920:1080[base_1080]; \
[vsplit11]scale=1280:720[base_720]; \
[vsplit12]scale=640:360[base_360]" \
\
-map "[video_1080_4.1]" \
-r:v:0 "24000/1001" \
-c:v:0 "libx264" \
-x264-params:0 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:0 "slow" \
-profile:v:0 "high" \
-level:v:0 "4.1" \
-refs:v:0 "2" \
-b-pyramid:v:0 "strict" \
-tune:v:0 "film" \
-b:v:0 "4800000" \
-maxrate:v:0 "4800000" \
-bufsize:v:0 "6*4800000/8" \
-vsync:v:0 "cfr" \
-bsf:v:0 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_720_4.1]" \
-r:v:1 "24000/1001" \
-c:v:1 "libx264" \
-x264-params:1 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:1 "slow" \
-profile:v:1 "main" \
-level:v:1 "4.1" \
-refs:v:1 "2" \
-b-pyramid:v:1 "strict" \
-tune:v:1 "film" \
-b:v:1 "3200000" \
-maxrate:v:1 "3200000" \
-bufsize:v:1 "6*3200000/8" \
-vsync:v:1 "cfr" \
-bsf:v:1 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_720_3.1]" \
-r:v:2 "24000/1001" \
-c:v:2 "libx264" \
-x264-params:2 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:2 "slow" \
-profile:v:2 "main" \
-level:v:2 "3.1" \
-refs:v:2 "2" \
-b-pyramid:v:2 "strict" \
-tune:v:2 "film" \
-b:v:2 "2200000" \
-maxrate:v:2 "2200000" \
-bufsize:v:2 "6*2200000/8" \
-vsync:v:2 "cfr" \
-bsf:v:2 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_540_3.1]" \
-r:v:3 "24000/1001" \
-c:v:3 "libx264" \
-x264-params:3 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:3 "slow" \
-profile:v:3 "main" \
-level:v:3 "3.1" \
-refs:v:3 "2" \
-b-pyramid:v:3 "strict" \
-tune:v:3 "film" \
-b:v:3 "1400000" \
-maxrate:v:3 "1400000" \
-bufsize:v:3 "6*1400000/8" \
-vsync:v:3 "cfr" \
-bsf:v:3 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_432_3.1]" \
-r:v:4 "24000/1001" \
-c:v:4 "libx264" \
-x264-params:4 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:4 "slow" \
-profile:v:4 "main" \
-level:v:4 "3.1" \
-refs:v:4 "2" \
-b-pyramid:v:4 "strict" \
-tune:v:4 "film" \
-b:v:4 "900000" \
-maxrate:v:4 "900000" \
-bufsize:v:4 "6*900000/8" \
-vsync:v:4 "cfr" \
-bsf:v:4 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_270_3.0]" \
-r:v:5 "24000/1001" \
-c:v:5 "libx264" \
-x264-params:5 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:5 "slow" \
-profile:v:5 "baseline" \
-level:v:5 "3.0" \
-refs:v:5 "2" \
-b-pyramid:v:5 "strict" \
-tune:v:5 "film" \
-b:v:5 "400000" \
-maxrate:v:5 "400000" \
-bufsize:v:5 "6*400000/8" \
-vsync:v:5 "cfr" \
-bsf:v:5 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_270_3.1]" \
-r:v:6 "24000/1001" \
-c:v:6 "libx264" \
-x264-params:6 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:6 "slow" \
-profile:v:6 "main" \
-level:v:6 "3.1" \
-refs:v:6 "2" \
-b-pyramid:v:6 "strict" \
-tune:v:6 "film" \
-b:v:6 "200000" \
-maxrate:v:6 "200000" \
-bufsize:v:6 "6*200000/8" \
-vsync:v:6 "cfr" \
-bsf:v:6 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_144_4.1]" \
-r:v:7 "24000/1001" \
-c:v:7 "libx264" \
-x264-params:7 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:7 "slow" \
-profile:v:7 "high" \
-level:v:7 "4.1" \
-refs:v:7 "2" \
-b-pyramid:v:7 "strict" \
-tune:v:7 "film" \
-b:v:7 "64000" \
-maxrate:v:7 "64000" \
-bufsize:v:7 "6*64000/8" \
-vsync:v:7 "cfr" \
-bsf:v:7 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[video_144_3.0]" \
-r:v:8 "24000/1001" \
-c:v:8 "libx264" \
-x264-params:8 "keyint=144:min-keyint=144:scenecut=0:open_gop=0" \
-preset:v:8 "slow" \
-profile:v:8 "baseline" \
-level:v:8 "3.0" \
-refs:v:8 "2" \
-b-pyramid:v:8 "strict" \
-tune:v:8 "film" \
-b:v:8 "56000" \
-maxrate:v:8 "56000" \
-bufsize:v:8 "6*56000/8" \
-vsync:v:8 "cfr" \
-bsf:v:8 "h264_metadata=fixed_frame_rate_flag=1" \
\
-map "[base_1080]" \
-c:v:9 "libx264" \
-preset:v:9 "slow" \
\
-map "[base_720]" \
-c:v:10 "libx264" \
-preset:v:10 "slow" \
\
-map "[base_360]" \
-c:v:11 "libx264" \
-preset:v:11 "slow" \
\
-map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 -map a:0 \
-c:a "libfdk_aac" \
-ar "48000" \
-ab "128k" \
-af "aresample=async=1:min_hard_comp=0.100000:first_pts=0" \
\
-f tee \
-flags +global_header \
"[select=\'v:0,a:0,v:1,a:1,v:2,a:2,v:3,a:3,v:4,a:4,v:5,a:5,v:6,a:6,v:7,a:7,v:8,a:8\':f=hls:hls_flags=discont_start+temp_file:hls_time=6:hls_list_size=0:var_stream_map=\'v:0,a:0 v:1,a:1 v:2,a:2 v:3,a:3 v:4,a:4 v:5,a:5 v:6,a:6 v:7,a:7 v:8,a:8\':master_pl_name=playlist.m3u8:hls_segment_filename=INPUT_VIDEO__%v_%03d.ts]INPUT_VIDEO/out_%v.m3u8|[select=\'v:9,a:9\':f=mp4:movflags=+faststart]INPUT_VIDEO/large-1920-1080.mp4|[select=\'v:10,a:10\':f=mp4:movflags=+faststart]INPUT_VIDEO/med-1280-720.mp4|[select=\'v:11,a:11\':f=mp4:movflags=+faststart]INPUT_VIDEO/sm-640-360.mp4"


    


  • how to solve ffmpeg video merging complain about parameters mismatching

    22 septembre 2019, par mohammad rostami siahgeli

    I’m trying to concatenate an intro video to a main video. Here’s my command :

    ffmpeg -i C:\Temp\intro.mp4 -i C:\Temp\main.mp4 -filter_complex "[0:v:0][0:a:0][1:v:0][1:a:0]concat=n=2:v=1:a=1[outv][outa]" -map "[outv]" -map "[outa]" C:\Temp\output.mp4

    When I run this command in cmd, I get the following error :

    ffmpeg version N-95004-g2f87c9f646 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 9.2.1 (GCC) 20190918
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
    
  libavutil      56. 35.100 / 56. 35.100
    
  libavcodec     58. 58.101 / 58. 58.101
    
  libavformat    58. 33.100 / 58. 33.100
    
  libavdevice    58.  9.100 / 58.  9.100
    
  libavfilter     7. 58.102 /  7. 58.102
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Temp\intro.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41
    
    creation_time   : 2019-09-21T09:23:34.000000Z
    
  Duration: 00:00:07.32, start: 0.000000, bitrate: 706 kb/s
    
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 960x540, 323 kb/s, 15 fps, 15 tbr, 30k tbn, 30 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-09-21T09:23:34.000000Z
    
      handler_name    : ?Mainconcept Video Media Handler
    
      encoder         : AVC Coding
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-09-21T09:23:34.000000Z
    
      handler_name    : #Mainconcept MP4 Sound Media Handler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Temp\main.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf56.40.101
    
  Duration: 00:00:08.78, start: 0.000000, bitrate: 499 kb/s
    
    Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 640x640 [SAR 1:1 DAR 1:1], 430 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 64 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 (h264) -> concat:in0:v0
    
  Stream #0:1 (aac) -> concat:in0:a0
    
  Stream #1:0 (h264) -> concat:in1:v0
    
  Stream #1:1 (aac) -> concat:in1:a0
    
  concat:out:v0 -> Stream #0:0 (libx264)
    
  concat:out:a0 -> Stream #0:1 (aac)
    
Press [q] to stop, [?] for help
    
[Parsed_concat_0 @ 0000018168eedec0] Input link in0:v0 parameters (size 640x640, SAR 1:1) do not match the corresponding output link in0:v0 parameters (960x540, SAR 1:1)
    
[Parsed_concat_0 @ 0000018168eedec0] Failed to configure output pad on Parsed_concat_0
    
Error reinitializing filters!
    
Failed to inject frame into filter network: Invalid argument
    
Error while processing the decoded data for stream #1:0
    
Conversion failed!

    I’m not a video ninja. I know parameters are different, but I have no idea after hours of search on how to solve this. A lot of online video services concatenate these two videos and give me a reasonable result. They have a GUI though. I need to do it in code, so that I can automate it.

    How can I solve these errors ?

    Update : This is the second error :

    ffmpeg version N-95004-g2f87c9f646 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 9.2.1 (GCC) 20190918
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
    
  libavutil      56. 35.100 / 56. 35.100
    
  libavcodec     58. 58.101 / 58. 58.101
    
  libavformat    58. 33.100 / 58. 33.100
    
  libavdevice    58.  9.100 / 58.  9.100
    
  libavfilter     7. 58.102 /  7. 58.102
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Temp\intro.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41
    
    creation_time   : 2019-09-21T09:23:34.000000Z
    
  Duration: 00:00:07.32, start: 0.000000, bitrate: 706 kb/s
    
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m), 960x540, 323 kb/s, 15 fps, 15 tbr, 30k tbn, 30 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-09-21T09:23:34.000000Z
    
      handler_name    : ?Mainconcept Video Media Handler
    
      encoder         : AVC Coding
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-09-21T09:23:34.000000Z
    
      handler_name    : #Mainconcept MP4 Sound Media Handler
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Temp\main.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf56.40.101
    
  Duration: 00:00:08.78, start: 0.000000, bitrate: 499 kb/s
    
    Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 640x640 [SAR 1:1 DAR 1:1], 430 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 59.94 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 64 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
File 'C:\Temp\output.mp4' already exists. Overwrite ? [y/N] Y
    
Stream mapping:
    
  Stream #0:0 (h264) -> scale
    
  Stream #0:1 (aac) -> concat:in0:a0
    
  Stream #1:0 (h264) -> concat:in1:v0
    
  Stream #1:1 (aac) -> concat:in1:a0
    
  concat:out:v0 -> Stream #0:0 (libx264)
    
  concat:out:a0 -> Stream #0:1 (aac)
    
Press [q] to stop, [?] for help
    
[mp4 @ 000002f17869d7c0] Frame rate very high for a muxer not efficiently supporting it.
    
Please consider specifying a lower framerate, a different muxer or -vsync 2
    
[libx264 @ 000002f178acfec0] using SAR=1/1
    
[libx264 @ 000002f178acfec0] MB rate (1600000000) > level limit (16711680)
    
[libx264 @ 000002f178acfec0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 000002f178acfec0] profile High, level 6.2, 4:2:0, 8-bit
    
[libx264 @ 000002f178acfec0] 264 - core 158 r2984 3759fcb - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - 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=12 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=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
    
More than 1000 frames duplicated
    
Too many packets buffered for output stream 0:0.
    
[libx264 @ 000002f178acfec0] frame I:1     Avg QP:16.45  size:  4679
    
[libx264 @ 000002f178acfec0] frame P:32    Avg QP:14.16  size:    33
    
[libx264 @ 000002f178acfec0] frame B:96    Avg QP:17.67  size:    30
    
[libx264 @ 000002f178acfec0] consecutive B-frames:  0.8%  0.0%  0.0% 99.2%
    
[libx264 @ 000002f178acfec0] mb I  I16..4: 58.1% 34.8%  7.1%
    
[libx264 @ 000002f178acfec0] mb P  I16..4:  0.1%  0.0%  0.0%  P16..4:  0.0%  0.0%  0.0%  0.0%  0.0%    skip:99.9%
    
[libx264 @ 000002f178acfec0] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.8%  0.0%  0.0%  direct: 0.0%  skip:99.2%  L0: 0.0% L1:100.0% BI: 0.0%
    
[libx264 @ 000002f178acfec0] 8x8 transform intra:33.8%
    
[libx264 @ 000002f178acfec0] coded y,uvDC,uvAC intra: 4.6% 8.2% 7.3% inter: 0.0% 0.0% 0.0%
    
[libx264 @ 000002f178acfec0] i16 v,h,dc,p: 74% 22%  5%  0%
    
[libx264 @ 000002f178acfec0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  1% 16% 83%  0%  0%  0%  0%  0%  0%
    
[libx264 @ 000002f178acfec0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 17% 26%  7%  5%  5%  5%  6%  5%
    
[libx264 @ 000002f178acfec0] i8c dc,h,v,p: 93%  3%  3%  1%
    
[libx264 @ 000002f178acfec0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 000002f178acfec0] ref P L0: 62.5% 37.5%
    
[libx264 @ 000002f178acfec0] ref B L1: 99.8%  0.2%
    
[libx264 @ 000002f178acfec0] kb/s:535069.75
    
Conversion failed!

  • Evolution #4391 (Nouveau) : Squelettes de la dist : améliorer le markup et passer à BEM

    13 octobre 2019, par tcharlss (*´_ゝ｀)

    Hello,

    En voulant créer des nouveaux thèmes pour les squelettes de la dist, j’ai rencontré des limitations dûes au markup actuel.

    Par exemple, certains éléments sans classe sont impossibles à cibler, il y a des retours lignes en dur, etc.
    En certains endroits, cela limite pas mal les possibilités.
    J’aimerais lancer un petit refactoring du markup afin qu’il soit plus facile de thémer les squelettes et de maintenir les styles.

    Il s’agirait principalement d’améliorer la nomenclature des classes, en changeant le moins possible le markup afin que les thèmes actuels restent compatibles (ou au prix d’adaptations minimes).
    On ajouterait donc des nouvelles classes, sans supprimer les classes actuelles (dans un 1er temps tout du moins ?).
    Cela pourrait être l’occasion de passer à la méthodologie BEM pour la nomenclature des classes.

    Exemple n°1

    Exemple avec le copyright et les liens dans le footer.
    Actuellement, il n’y a pas de classe autour du copyright, les liens ne sont pas encapsulés dans un conteneur, et les séparateurs « | » n’ont pas de classe n’ont plus.
    Il est donc quasiment impossible de changer l’agencement général, de changer l’apparence des séparateurs, etc.

    <span class="CodeRay"><span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">colophon</span><span class="delimiter">"</span></span><span class="tag">></span>
    
    2009 - 2019 Thèmes SPIP
    
    <span class="tag"><br /></span>
    
    <span class="tag">span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">contents</span><span class="delimiter">"</span></span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">first</span><span class="delimiter">"</span></span><span class="tag">></span>Plan du site<span class="tag"></span>    | <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">ecrire/</span><span class="delimiter">"</span></span><span class="tag">></span>Espace privé<span class="tag"></span> | <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">nofollow</span><span class="delimiter">"</span></span><span class="tag">></span>Se déconnecter<span class="tag"></span> | 
    
 <span class="tag">span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">nofollow</span><span class="delimiter">"</span></span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span><span class="tag">></span>Contact<span class="tag"></span> | <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">alternate</span><span class="delimiter">"</span></span> <span class="attribute-name">title</span>=<span class="string"><span class="delimiter">"</span><span class="content">Syndiquer tout le site</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">last</span><span class="delimiter">"</span></span><span class="tag">></span>RSS<span class="entity">&amp;nbsp;</span>2.0<span class="tag"></span>
    
<span class="tag"></span>
    
</span></span></span></span></span></span></span>

    Voici ce que ça pourrait donner en refactorisant :

    • Le copyright est encapsulé dans un span
    • Les liens sont considérés comme faisant partie d’un menu, et sont donc encapsulés dans un composant « menu »
    • Les séparateurs sont fait en CSS, pas en dur dans le HTML
    <span class="CodeRay"><span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">colophon</span><span class="delimiter">"</span></span><span class="tag">></span>
    
    <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">colophon__coyright</span><span class="delimiter">"</span></span><span class="tag">></span>2009 - 2019 Thèmes SPIP<span class="tag"></span></span>
    
    <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">colophon__menu</span><span class="delimiter">"</span></span><span class="tag">></span>
    
        <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu menu_footer</span><span class="delimiter">"</span></span><span class="tag">></span>
    
            <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__item menu__item_plan</span><span class="delimiter">"</span></span><span class="tag">></span>
    
                <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__link first</span><span class="delimiter">"</span></span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">contents</span><span class="delimiter">"</span></span><span class="tag">></span>Plan du site<span class="tag"></span>
    
            <span class="tag"></span>
    
            <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__item menu__item_backoffice</span><span class="delimiter">"</span></span><span class="tag">></span>
    
                <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span><span class="tag">></span>Espace privé<span class="tag"></span>
    
            <span class="tag"></span>
    
            <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__item menu__item_logout</span><span class="delimiter">"</span></span><span class="tag">></span>
    
                <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__link</span><span class="delimiter">"</span></span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">nofollow</span><span class="delimiter">"</span></span><span class="tag">></span>Se déconnecter<span class="tag"></span>
    
            <span class="tag"></span>
    
            <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__item menu__item_contact</span><span class="delimiter">"</span></span><span class="tag">></span>
    
                <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__link</span><span class="delimiter">"</span></span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">nofollow</span><span class="delimiter">"</span></span><span class="tag">></span>Contact<span class="tag"></span>
    
            <span class="tag"></span>
    
            <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__item menu__item_rss</span><span class="delimiter">"</span></span><span class="tag">></span>
    
                <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">menu__link last</span><span class="delimiter">"</span></span> <span class="attribute-name">rel</span>=<span class="string"><span class="delimiter">"</span><span class="content">alternate</span><span class="delimiter">"</span></span> <span class="attribute-name">title</span>=<span class="string"><span class="delimiter">"</span><span class="content">Syndiquer tout le site</span><span class="delimiter">"</span></span><span class="tag">></span>RSS<span class="entity">&amp;nbsp;</span>2.0<span class="tag"></span>
    
            <span class="tag"></span>
    
        <span class="tag"></span>
    
    <span class="tag"></span>
    
<span class="tag"></span>
    
</span></span></span></span></span></span></span></span></span></span></span></span></span></span>

    Avec ça, on peut faire beaucoup plus de choses : afficher le copyright et le menu côte-à-côte ou l’un sous l’autre, afficher le menu à l’horizontale ou à la verticale, choisir l’apparence des séparateurs, etc.

    Exemple n°2

    Autre exemple avec les résumés d’articles.

    <span class="CodeRay"><span class="tag">span> <span class="attribute-name">dir</span>=<span class="string"><span class="delimiter">"</span><span class="content">ltr</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">hentry clearfix text-left</span><span class="delimiter">"</span></span><span class="tag">></span>  
    
    <span class="tag"><strong></strong></span>
    
        <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span><span class="tag">></span>
    
            <span class="tag">span> <span class="attribute-name">src</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">spip_logo</span><span class="delimiter">"</span></span> <span class="attribute-name">alt</span>=<span class="string"><span class="delimiter">"</span><span class="delimiter">"</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">"</span><span class="content">150</span><span class="delimiter">"</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">"</span><span class="content">185</span><span class="delimiter">"</span></span><span class="tag">></span>
    
            Joie entourée d’angoisses (1)
    
        <span class="tag"></span>
    
    <span class="tag"></span>
    
    <span class="tag"><br /></span><span class="tag"><small></small></span>6 mai 2009, par  Victor Hugo<span class="tag"></span>
    
    <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">introduction entry-content</span><span class="delimiter">"</span></span><span class="tag">></span>
    
        <span class="tag"><p></p></span>
    
            Lorem ipsum<span class="entity">&amp;nbsp;</span>(...)
    
        <span class="tag"></span>
    
    <span class="tag"></span>
    
<span class="tag"></span>
    
</span></span></span></span></span>

    En refactorisant :

    • Le composant de base est nommé « resume », et on voit qu’il s’agit d’une variante « article ».
    • Tous les éléments ont une classe.
    • Le titre est encapsulé dans un <h3></h3> plutôt qu’un <strong></strong>.
    • L’image est sortie du titre, et sa largeur n’est pas limitée à 150px (ça se ferait en CSS).
    <span class="CodeRay"><span class="tag">span> <span class="attribute-name">dir</span>=<span class="string"><span class="delimiter">"</span><span class="content">ltr</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">resume resume_article hentry clearfix text-left</span><span class="delimiter">"</span></span><span class="tag">></span>  
    
    <span class="tag">span> <span class="attribute-name">src</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">resume__logo spip_logo</span><span class="delimiter">"</span></span> <span class="attribute-name">alt</span>=<span class="string"><span class="delimiter">"</span><span class="delimiter">"</span></span> <span class="attribute-name">width</span>=<span class="string"><span class="delimiter">"</span><span class="content">960</span><span class="delimiter">"</span></span> <span class="attribute-name">height</span>=<span class="string"><span class="delimiter">"</span><span class="content">480</span><span class="delimiter">"</span></span><span class="tag">></span>
    
    <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">resume__title</span><span class="delimiter">"</span></span><span class="tag">></span>
    
        <span class="tag">span> <span class="attribute-name">href</span>=<span class="string"><span class="delimiter">"</span><span class="content">...</span><span class="delimiter">"</span></span><span class="tag">></span>
    
            Joie entourée d’angoisses (1)
    
        <span class="tag"></span>
    
    <span class="tag"></span>
    
    <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">resume__publication</span><span class="delimiter">"</span></span><span class="tag">></span>
    
        <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">resume__date</span><span class="delimiter">"</span></span><span class="tag">></span>6 mai 2009<span class="tag"></span></span><span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">sep</span><span class="delimiter">"</span></span><span class="tag">></span>,<span class="tag"></span></span> <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">resume__author</span><span class="delimiter">"</span></span><span class="tag">></span>par Victor Hugo<span class="tag"></span></span>
    
    <span class="tag"></span>
    
    <span class="tag">span> <span class="attribute-name">class</span>=<span class="string"><span class="delimiter">"</span><span class="content">resume__content introduction entry-content</span><span class="delimiter">"</span></span><span class="tag">></span>
    
        <span class="tag"><p></p></span>
    
            Lorem ipsum<span class="entity">&amp;nbsp;</span>(...)
    
        <span class="tag"></span>
    
    <span class="tag"></span>
    
<span class="tag"></span>
    
</span></span></span></span></span></span></span>

    Voilà, ce ne sont que des exemples et non pas des propositions définitives.
    C’est juste pour montrer la direction dans laquelle aller.

    HTML5

    Il est tentant de vouloir en profiter pour passer en HTML5, mais je préfère laisser cet aspect à part (il y a déjà des tickets dessus je pense).

    Français/anglais ?

    Actuellement pour la nomenclature des classes, il y a un mélange de français et d’anglais. Personnellement, ça ne me dérange pas :)
    J’ai arrêté d’essayer de tout franciser à tout prix, je préfère partir sur une base en anglais, avec quelques éléments en français quand il n’y a a pas le choix (par exemple quand on fait référence aux objets spip : breve, rubrique, etc.).

    Cahier des charges

    • Faire en sorte que les thèmes existants restent globalement compatibles (moyennant peu d’adaptations).
    • Passer la nomenclature des classes à BEM.
    • Ajouter des classes sur tous les éléments n’en ayant pas.
    • Retirer les retours ligne en dur : <br />.
    • Travailler dans une branche nommée « bem » du dépôt git : https://git.spip.net/SPIP/dist/
    • Pas de HTML5 pour l’instant.
    • Classes en english avec des exceptions en français

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