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    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
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    5 septembre 2013, par

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    21 juin 2013, par

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Sur d’autres sites (10414)

  • Video becomes choppy when the order in the hstack filter is changed

    25 octobre 2018, par Mayank

    I have a FFmpeg command wherein I am merging 2 videos side by side using hstack filter. When I place first video on the right hand side and second video on the left hand side, the final merged video is perfect in quality and plays smoothly.

    However, when I swap the order in hstack filter, the final video is very choppy.

    Can someone please let me know the issue in this command ? Many thanks in advance.

    Also, the file size of the non working file is almost double than that of working file. Can you explain why ?

    Here is the working command :

    ffmpeg -i 1_a.opus -i 2_a.opus -itsoffset 0.024 -i 1_v.mp4 -itsoffset 0.113 -i 2_v.mp4 -filter_complex "[1:a]adelay=15646|15646[a1]; [0:a][a1]amix; [3:v]trim=0:15.646,geq=0:128:128[silence]; [3:v]fifo[3v]; [silence][3v]concat[3_v_silence]; [3_v_silence][2:v]hstack" -preset ultrafast -y n_m_bars_try2.mp4

    output :

    ffmpeg version 4.0.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
     built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
     configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
     libavutil      56. 14.100 / 56. 14.100
     libavcodec     58. 18.100 / 58. 18.100
     libavformat    58. 12.100 / 58. 12.100
     libavdevice    58.  3.100 / 58.  3.100
     libavfilter     7. 16.100 /  7. 16.100
     libswscale      5.  1.100 /  5.  1.100
     libswresample   3.  1.100 /  3.  1.100
     libpostproc    55.  1.100 / 55.  1.100
    Input #0, ogg, from '1_a.opus':
     Duration: 00:01:03.82, start: -0.020000, bitrate: 37 kb/s
       Stream #0:0: Audio: opus, 48000 Hz, stereo, fltp
    Input #1, ogg, from '2_a.opus':
     Duration: 00:00:52.40, start: -0.020000, bitrate: 44 kb/s
       Stream #1:0: Audio: opus, 48000 Hz, stereo, fltp
    Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '1_v.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf58.12.100
     Duration: 00:01:03.85, start: 0.000000, bitrate: 2644 kb/s
       Stream #2:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 2633 kb/s, 333 fps, 333 tbr, 10656 tbn, 666 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    Input #3, mov,mp4,m4a,3gp,3g2,mj2, from '2_v.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf58.12.100
     Duration: 00:00:52.32, start: 0.000000, bitrate: 861 kb/s
       Stream #3:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 860 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    Stream mapping:
     Stream #0:0 (opus) -> amix:input0
     Stream #1:0 (opus) -> adelay
     Stream #2:0 (h264) -> hstack:input1
     Stream #3:0 (h264) -> trim
     Stream #3:0 (h264) -> fifo
     amix -> Stream #0:0 (aac)
     hstack -> Stream #0:1 (libx264)
    Press [q] to stop, [?] for help
    [libx264 @ 0x528d600] using SAR=1/1
    [libx264 @ 0x528d600] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 SlowShuffle
    [libx264 @ 0x528d600] profile Constrained Baseline, level 3.1
    [libx264 @ 0x528d600] 264 - core 155 r2901 7d0ff22 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
    Output #0, mp4, to 'navid_mayank_bars_try2.mp4':
     Metadata:
       encoder         : Lavf58.12.100
       Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
       Metadata:
         encoder         : Lavc58.18.100 aac
       Stream #0:1: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x480 [SAR 1:1 DAR 8:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
       Metadata:
         encoder         : Lavc58.18.100 libx264
       Side data:
         cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    frame= 1704 fps= 42 q=-1.0 Lsize=   14440kB time=00:01:08.12 bitrate=1736.5kbits/s dup=3 drop=21229 speed=1.69x    
    video:13448kB audio:953kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.269503%
    [aac @ 0x52b8680] Qavg: 22255.799
    [libx264 @ 0x528d600] frame I:7     Avg QP:16.29  size: 46284
    [libx264 @ 0x528d600] frame P:1697  Avg QP:18.36  size:  7924
    [libx264 @ 0x528d600] mb I  I16..4: 100.0%  0.0%  0.0%
    [libx264 @ 0x528d600] mb P  I16..4:  1.8%  0.0%  0.0%  P16..4: 31.0%  0.0%  0.0%  0.0%  0.0%    skip:67.2%
    [libx264 @ 0x528d600] coded y,uvDC,uvAC intra: 29.9% 59.3% 17.5% inter: 13.4% 24.6% 0.8%
    [libx264 @ 0x528d600] i16 v,h,dc,p: 36% 29% 18% 17%
    [libx264 @ 0x528d600] i8c dc,h,v,p: 42% 25% 21% 11%
    [libx264 @ 0x528d600] kb/s:1616.23

    Non working command :

    ffmpeg -i 1_a.opus -i 2_a.opus -itsoffset 0.024 -i 1_v.mp4 -itsoffset 0.113 -i 2_v.mp4 -filter_complex "[1:a]adelay=15646|15646[a1]; [0:a][a1]amix; [3:v]trim=0:15.646,geq=0:128:128[silence]; [3:v]fifo[3v]; [silence][3v]concat[3_v_silence]; [2:v][3_v_silence]hstack" -preset ultrafast -y m_n_bars_try2.mp4

    output :

    ffmpeg version 4.0.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
     built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
     configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
     libavutil      56. 14.100 / 56. 14.100
     libavcodec     58. 18.100 / 58. 18.100
     libavformat    58. 12.100 / 58. 12.100
     libavdevice    58.  3.100 / 58.  3.100
     libavfilter     7. 16.100 /  7. 16.100
     libswscale      5.  1.100 /  5.  1.100
     libswresample   3.  1.100 /  3.  1.100
     libpostproc    55.  1.100 / 55.  1.100
    Input #0, ogg, from '1_a.opus':
     Duration: 00:01:03.82, start: -0.020000, bitrate: 37 kb/s
       Stream #0:0: Audio: opus, 48000 Hz, stereo, fltp
    Input #1, ogg, from '2_a.opus':
     Duration: 00:00:52.40, start: -0.020000, bitrate: 44 kb/s
       Stream #1:0: Audio: opus, 48000 Hz, stereo, fltp
    Input #2, mov,mp4,m4a,3gp,3g2,mj2, from '1_v.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf58.12.100
     Duration: 00:01:03.85, start: 0.000000, bitrate: 2644 kb/s
       Stream #2:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 2633 kb/s, 333 fps, 333 tbr, 10656 tbn, 666 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    Input #3, mov,mp4,m4a,3gp,3g2,mj2, from '2_v.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf58.12.100
     Duration: 00:00:52.32, start: 0.000000, bitrate: 861 kb/s
       Stream #3:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 860 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
       Metadata:
         handler_name    : VideoHandler
    Stream mapping:
     Stream #0:0 (opus) -> amix:input0
     Stream #1:0 (opus) -> adelay
     Stream #2:0 (h264) -> hstack:input0
     Stream #3:0 (h264) -> trim
     Stream #3:0 (h264) -> fifo
     amix -> Stream #0:0 (aac)
     hstack -> Stream #0:1 (libx264)
    Press [q] to stop, [?] for help
    [libx264 @ 0x6d21600] using SAR=1/1
    [libx264 @ 0x6d21600] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 SlowShuffle
    [libx264 @ 0x6d21600] profile Constrained Baseline, level 5.1
    [libx264 @ 0x6d21600] 264 - core 155 r2901 7d0ff22 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
    Output #0, mp4, to 'mayank_navid_bars_try2.mp4':
     Metadata:
       encoder         : Lavf58.12.100
       Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
       Metadata:
         encoder         : Lavc58.18.100 aac
       Stream #0:1: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 1280x480 [SAR 1:1 DAR 8:3], q=-1--1, 333 fps, 10656 tbn, 333 tbc (default)
       Metadata:
         encoder         : Lavc58.18.100 libx264
       Side data:
         cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    Past duration 0.999992 too large
       Last message repeated 12 times
    More than 1000 frames duplicated   33280kB time=00:01:08.03 bitrate=4007.4kbits/s dup=982 drop=1590 speed=0.536x    
    frame=22679 fps=177 q=-1.0 Lsize=   33892kB time=00:01:08.10 bitrate=4076.9kbits/s dup=1339 drop=1590 speed=0.531x    
    video:32804kB audio:953kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.401324%
    [aac @ 0x6d4c680] Qavg: 22255.799
    [libx264 @ 0x6d21600] frame I:91    Avg QP:15.31  size: 51639
    [libx264 @ 0x6d21600] frame P:22588 Avg QP:18.24  size:  1279
    [libx264 @ 0x6d21600] mb I  I16..4: 100.0%  0.0%  0.0%
    [libx264 @ 0x6d21600] mb P  I16..4:  0.2%  0.0%  0.0%  P16..4: 13.0%  0.0%  0.0%  0.0%  0.0%    skip:86.8%
    [libx264 @ 0x6d21600] coded y,uvDC,uvAC intra: 44.9% 54.0% 29.9% inter: 2.0% 10.9% 0.1%
    [libx264 @ 0x6d21600] i16 v,h,dc,p: 45% 24% 13% 18%
    [libx264 @ 0x6d21600] i8c dc,h,v,p: 51% 20% 18% 11%
    [libx264 @ 0x6d21600] kb/s:3945.79
  • cbs_h265 : Add PTL parsing for Main 10 Still Picture profile

    27 octobre 2018, par Mark Thompson
    cbs_h265 : Add PTL parsing for Main 10 Still Picture profile
    

    This was added in the 2018 version of the standard.

    • [DH] libavcodec/cbs_h265_syntax_template.c
  • FFMPEG HLS Multiple audio languages with var_stream_map - EXT-X-MEDIA:TYPE doesn't contain LANGUAGE

    30 janvier 2020, par Moonsurfer_1

    I have a question involving multiple audio languages on HLS with FFMPEG.

    I’m currently using the following command to mux a transport stream with multiple audio languages into an HLS stream with a master playlist :

    ffmpeg -re -i $INPUT_URL -map 0:v -c:v copy -map 0:a -c:a copy -f hls -hls_time 6 -hls_list_size 10 -hls_flags delete_segments+program_date_time -hls_segment_filename "$FULL_OUTPUT_FOLDER/stream_%v_%d.ts" -var_stream_map "v:0,agroup:groupname a:0,agroup:groupname a:1,agroup:groupname a:2,agroup:groupname a:3,agroup:groupname" -master_pl_name master.m3u8 $FULL_OUTPUT_FOLDER/stream-%v.m3u8

    The output of this command looks like this :

    ffmpeg version 4.0.3-1~16.04.york0 Copyright (c) 2000-2018 the FFmpeg developers
     built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
     configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --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      56. 14.100 / 56. 14.100
     libavcodec     58. 18.100 / 58. 18.100
     libavformat    58. 12.100 / 58. 12.100
     libavdevice    58.  3.100 / 58.  3.100
     libavfilter     7. 16.100 /  7. 16.100
     libavresample   4.  0.  0 /  4.  0.  0
     libswscale      5.  1.100 /  5.  1.100
     libswresample   3.  1.100 /  3.  1.100
     libpostproc    55.  1.100 / 55.  1.100
    [mpegts @ 0x55c8cb7fee40] start time for stream 5 is not set in estimate_timings_from_pts
    [mpegts @ 0x55c8cb7fee40] start time for stream 6 is not set in estimate_timings_from_pts                                                                                          
    [mpegts @ 0x55c8cb7fee40] start time for stream 7 is not set in estimate_timings_from_pts                                                                                          
    Input #0, mpegts, from '/home/user/Videos/output/example.ts':
     Duration: 00:37:50.26, start: 1.498667, bitrate: 1257 kb/s
     Program 1
       Metadata:
         service_name    : example
         service_provider: FFmpeg
       Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 696x572 [SAR 64:45 DAR 3712:2145], 25 fps, 25 tbr, 90k tbn, 50 tbc
       Stream #0:1[0x101](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 159 kb/s
       Stream #0:2[0x102](fra): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 126 kb/s
       Stream #0:3[0x103](ita): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
       Stream #0:4[0x104](eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
       Stream #0:5[0x105](eng): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
       Stream #0:6[0x106](fra): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
       Stream #0:7[0x107](deu): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_0_0.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_0.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_2_0.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_3_0.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_4_0.ts' for writing
    [mpegts @ 0x55c8cb880380] frame size not set
    [mpegts @ 0x55c8cb882040] frame size not set                                                                                                                                      
    [mpegts @ 0x55c8cb8837c0] frame size not set                                                                                                                                      
    [mpegts @ 0x55c8cb885280] frame size not set                                                                                                                                      
    Output #0, hls, to '/var/www/html/live/stream-%v.m3u8':
     Metadata:
       encoder         : Lavf58.12.100
       Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 696x572 [SAR 64:45 DAR 3712:2145], q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
       Stream #0:1(eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 159 kb/s
       Stream #0:2(fra): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 126 kb/s
       Stream #0:3(ita): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
       Stream #0:4(eng): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 132 kb/s
    Stream mapping:
     Stream #0:0 -> #0:0 (copy)
     Stream #0:1 -> #0:1 (copy)
     Stream #0:2 -> #0:2 (copy)
     Stream #0:3 -> #0:3 (copy)
     Stream #0:4 -> #0:4 (copy)
    Press [q] to stop, [?] for help
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_1.ts' for writing    
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-1.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_2_1.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-2.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_3_1.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-3.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_4_1.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-4.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_2.ts' for writing  
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-1.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_2_2.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-2.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_3_2.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-3.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_4_2.ts' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-4.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_0_1.ts' for writing  
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-0.m3u8.tmp' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/master.m3u8' for writing
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream_1_3.ts' for writing  
    [hls @ 0x55c8cb834980] Opening '/var/www/html/live/stream-1.m3u8.tmp' for writing

    The master playlist that’s being output by this command looks like this :

    #EXTM3U
    #EXT-X-VERSION:3
    #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-1.m3u8"
    #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-2.m3u8"
    #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-3.m3u8"
    #EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="group_groupname",NAME="audio_0",DEFAULT=YES,URI="stream-4.m3u8"
    #EXT-X-STREAM-INF:BANDWIDTH=174900,RESOLUTION=696x572,AUDIO="group_groupname"
    stream-0.m3u8

    #EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
    stream-1.m3u8

    #EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
    stream-2.m3u8

    #EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
    stream-3.m3u8

    #EXT-X-STREAM-INF:BANDWIDTH=174900,CODECS="mp4a.40.2",AUDIO="group_groupname"
    stream-4.m3u8

    While this does seem to work with VLC, I need the EXT-X-MEDIA:TYPE tag to contain the LANGUAGE property. (the player I’m working with uses it to parse the audio tracks’ language) I can’t figure out how to do that based on the documentation I’ve found.

    Could anyone help me with this ?

    Thanks !