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  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
    Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...)

  • Configuration spécifique d’Apache

    4 février 2011, par

    Modules spécifiques
    Pour la configuration d’Apache, il est conseillé d’activer certains modules non spécifiques à MediaSPIP, mais permettant d’améliorer les performances : mod_deflate et mod_headers pour compresser automatiquement via Apache les pages. Cf ce tutoriel ; mode_expires pour gérer correctement l’expiration des hits. Cf ce tutoriel ;
    Il est également conseillé d’ajouter la prise en charge par apache du mime-type pour les fichiers WebM comme indiqué dans ce tutoriel.
    Création d’un (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

Sur d’autres sites (3427)

  • VLC - Could someone assist me into improving latency in streaming to web based app ?

    19 janvier 2017, par zyeek

    I have been looking for solutions in which I can stream an IP camera’s stream to HTML 5. Currently as is it doesn’t support RTSP so easily.

    I am trying to be able to view the camera’s stream as live as possible. I was hoping someone could help me achieve that. I have been playing with it to get something workable, but at the moment I get a 5s delay stream. It is smooth, but wish to get it hopefully within <1-2s delay if possible.

    My current setup goes from taking my IP camera’s stream in RTSP and converting it to a webm and streaming it to a url, which then I plan on using that to put else where in a web app.

    What I would like to achieve

    Use a protocol that has low latency with audio was well. Webm was used as test, but I can’t seem to get other commands to get the proper stream to be going.

    I would like to use DASH, but from reading FFMPEG currently doesn’t support it. I was thinking maybe RTMP would be good enough for now, being both low latency and HTTP 5 compatible. I am just unable to figure out how to get FFMPEG to transcode the RTSP to RTMP.

    SETUP :

    I am using ffserver and ffmpeg. Overall scope : trying to pull IP camera stream and put it on a web app.

    Framework I am use is Meteor JS. So, I am trying to few plugins or outside complex setups as I want to be able to deploy this Meteor app on mobile devices as well. So, I want to stay within the boundaries of what HTML 5 can support.

    My current ffserver setup is ffserver.conf (this was taking from bunch of different place :

    HTTPPort 8090                      # Port to bind the server to
    
HTTPBindAddress 0.0.0.0
    
MaxHTTPConnections 2000
    
MaxClients 1000
    
MaxBandwidth 10000             # Maximum bandwidth per client
    
                               # set this high enough to exceed stream bitrate
    
CustomLog -
    

    
<feed>
    
     File /tmp/feed.ffm
    
     FileMaxSize 100K
    
     ACL allow 127.0.0.1
    
</feed>
    

    

    
<stream>
    
     Format webm
    
     Feed feed.ffm
    
     NoAudio
    
     VideoCodec libvpx
    
     VideoFrameRate 24
    
     VideoBitRate 1024
    
     VideoSize 480x270
    
     VideoBufferSize 1024
    
     AVOptionVideo flags +global_header
    
     StartSendOnKey
    
</stream>
    

    
<stream>            # Server status URL
    
   Format status
    
   # Only allow local people to get the status
    
   ACL allow localhost
    
</stream>
    

    
<redirect>    # Just an URL redirect for index
    
   # Redirect index.html to the appropriate site
    
   URL url/
    
</redirect>

    Works normally :

    ffserver version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
    
  libavutil      55. 34.100 / 55. 34.100
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.100 / 57. 56.100
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
/etc/ffserver.conf:27: Setting default value for video bit rate tolerance = 256000. Use NoDefaults to disable it.
    
/etc/ffserver.conf:27: Setting default value for video rate control equation = tex^qComp. Use NoDefaults to disable it.
    
/etc/ffserver.conf:27: Setting default value for video max rate = 2048000. Use NoDefaults to disable it.
    
Wed Jan 18 17:04:30 2017 FFserver started.

    Now I give life to the feed with ffmpeg. Command I use :

    ffmpeg -vsync 2 -i rtsp://admin:password@192.168.2.165:88/videoMain -map 0 http://localhost:8090/feed.ffm

    which gives the result :

    ffmpeg version 3.2.2 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-frei0r --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-libopenjpeg --disable-decoder=jpeg2000 --extra-cflags=-I/usr/local/Cellar/openjpeg/2.1.2/include/openjpeg-2.1 --enable-nonfree --enable-vda
    
  libavutil      55. 34.100 / 55. 34.100
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.100 / 57. 56.100
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Guessed Channel Layout for Input Stream #0.1 : mono
    
Input #0, rtsp, from 'rtsp://admin:password@192.168.2.165:88/videoMain':
    
  Metadata:
    
    title           : IP Camera Video
    
    comment         : videoMain
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1280x720, 90k tbr, 90k tbn, 180k tbc
    
    Stream #0:1: Audio: pcm_mulaw, 8000 Hz, mono, s16, 64 kb/s
    
[libvpx @ 0x7fd58184a600] v1.6.0
    
Output #0, ffm, to 'http://localhost:8090/feed.ffm':
    
  Metadata:
    
    title           : IP Camera Video
    
    comment         : videoMain
    
    creation_time   : now
    
    encoder         : Lavf57.56.100
    
    Stream #0:0: Video: vp8 (libvpx), yuv420p, 480x270, q=-1--1, 1024 kb/s, 90k fps, 1000k tbn, 24 tbc
    
    Metadata:
    
      encoder         : Lavc57.64.101 libvpx
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 8388608 vbv_delay: -1
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> vp8 (libvpx))
    
Press [q] to stop, [?] for help
    
[rtsp @ 0x7fd581000000] max delay reached. need to consume packet
    
[rtsp @ 0x7fd581000000] RTP: missed 5 packets
    
[h264 @ 0x7fd5818ae800] Increasing reorder buffer to 1
    
frame=  139 fps= 18 q=0.0 Lsize=     440kB time=00:00:09.25 bitrate= 389.7kbits/s speed=1.19x    
    
video:429kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.663893%

  • Merge commit '1202b712690c14f0efb06e4ad8b06c5b3df6822a'

    11 mai 2017, par James Almer
    Merge commit '1202b712690c14f0efb06e4ad8b06c5b3df6822a'

    * commit '1202b712690c14f0efb06e4ad8b06c5b3df6822a' :
    
  theora : export cropping information instead of handling it internally
    
  h264dec : export cropping information instead of handling it internally
    
  h264dec : be more explicit in handling container cropping
    
  hevcdec : export cropping information instead of handling it internally
    

    This commit is a noop.
    

    This changes the cropping behavior, when it's supposedly only meant to move
    
it outside of the decoder.
    
See https://ffmpeg.org/pipermail/ffmpeg-devel/2017-May/211239.html for the
    
discussion about it.
    

    Merged-by : James Almer <jamrial@gmail.com>

  • FFmpeg retrieve a specific program from TS file

    8 mai 2017, par chang jc

    I tried to retrieve a specific program from a TS file.
    Said :

    Input #0, mpegts, from 'DVB_T_good.ts':
    
  Duration: 00:00:48.04, start: 55045.888000, bitrate: 14521 kb/s
    
  Program 300 
    
    Metadata:
    
      service_name    : ?l?��}�TS�
    
      service_provider: ?l?��
    
    Stream #0:0[0xbb9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:1[0xbba]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
    Stream #0:2[0xbbb]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
  Program 301 
    
    Metadata:
    
      service_name    : ?l?��N��?S�
    
      service_provider: ?l?��
    
    Stream #0:3[0xbc3]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:9[0xbc4]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
    Stream #0:10[0xbc5]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
  Program 302 
    
    Metadata:
    
      service_name    : ?l?��e��^S�
    
      service_provider: ?l?��
    
    Stream #0:5[0xbcd]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:6[0xbce]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
  Program 304 
    
    Metadata:
    
      service_name    : ?l?��S�pcS�
    
      service_provider: ?l?��
    
    Stream #0:4[0xbe1]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:7[0xbe2]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
    
    Stream #0:8[0xbe3]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp

    Then I tried to retrieve a specific program as :

    ffmpeg -i INPUT -map 0:p:1344 OUTPUT

    It succeeds greatly but the only thing I noticed is :

    it seems to apply transcode (decode & encode again) to the output implicitely ?

    ffmpeg version N-85693-g8de3458 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
    
  configuration: --prefix=/home/john/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/john/ffmpeg_build/include --extra-ldflags=-L/home/john/ffmpeg_build/lib --bindir=/home/john/bin --enable-gpl --enable-libfreetype --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --disable-ffplay --disable-ffserver --disable-doc --disable-libopus
    
  libavutil      55. 61.100 / 55. 61.100
    
  libavcodec     57. 93.100 / 57. 93.100
    
  libavformat    57. 72.101 / 57. 72.101
    
  libavdevice    57.  7.100 / 57.  7.100
    
  libavfilter     6. 87.100 /  6. 87.100
    
  libswscale      4.  7.101 /  4.  7.101
    
  libswresample   2.  8.100 /  2.  8.100
    
  libpostproc    54.  6.100 / 54.  6.100
    
[NULL @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[NULL @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] SPS unavailable in decode_picture_timing
    
[h264 @ 0x33eb3a0] non-existing PPS 0 referenced
    
[h264 @ 0x33eb3a0] decode_slice_header error
    
[h264 @ 0x33eb3a0] no frame!
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
    Last message repeated 1 times
    
[mpeg2video @ 0x33ea200] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
    Last message repeated 2 times
    
[mpeg2video @ 0x33ec540] Invalid frame dimensions 0x0.
    
[mpeg2video @ 0x33b7680] Invalid frame dimensions 0x0.
    
[mpegts @ 0x33af360] PES packet size mismatch
    
    Last message repeated 9 times
    
Input #0, mpegts, from 'DVB_T_good.ts':
    
  Duration: 00:00:48.04, start: 55045.888000, bitrate: 14521 kb/s
    
  Program 300 
    
    Metadata:
    
      service_name    : ?l?��}�TS�
    
      service_provider: ?l?��
    
    Stream #0:0[0xbb9]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:1[0xbba]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
    Stream #0:2[0xbbb]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
  Program 301 
    
    Metadata:
    
      service_name    : ?l?��N��?S�
    
      service_provider: ?l?��
    
    Stream #0:3[0xbc3]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:9[0xbc4]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
    Stream #0:10[0xbc5]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
  Program 302 
    
    Metadata:
    
      service_name    : ?l?��e��^S�
    
      service_provider: ?l?��
    
    Stream #0:5[0xbcd]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 704x480 [SAR 10:11 DAR 4:3], 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:6[0xbce]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s
    
  Program 304 
    
    Metadata:
    
      service_name    : ?l?��S�pcS�
    
      service_provider: ?l?��
    
    Stream #0:4[0xbe1]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
    
    Stream #0:7[0xbe2]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
    
    Stream #0:8[0xbe3]: Audio: aac_latm (HE-AAC) ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
    
map 0:p:304
    
File '304_1800.ts' already exists. Overwrite ? [y/N] y
    
Stream mapping:
    
  Stream #0:4 -> #0:0 (h264 (native) -> mpeg2video (native))
    
  Stream #0:7 -> #0:1 (aac_latm (native) -> mp2 (native))
    
  Stream #0:8 -> #0:2 (aac_latm (native) -> mp2 (native))
    
Press [q] to stop, [?] for help
    
[h264 @ 0x33d6d20] mmco: unref short failure
    
    Last message repeated 1 times
    
[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    
[h264 @ 0x33d6d20] reference picture missing during reorder
    
[h264 @ 0x33d6d20] Missing reference picture, default is 65784
    
[h264 @ 0x33d6d20] reference picture missing during reorder
    
[h264 @ 0x33d6d20] Missing reference picture, default is 65785
    
Output #0, mpegts, to '304_1800.ts':
    
  Metadata:
    
    encoder         : Lavf57.72.101
    
    Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
    
    Metadata:
    
      encoder         : Lavc57.93.100 mpeg2video
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
    
    Metadata:
    
      encoder         : Lavc57.93.100 mp2
    
    Stream #0:2: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
    
    Metadata:
    
      encoder         : Lavc57.93.100 mp2
    
[h264 @ 0x33d6d20] mmco: unref short failureime=00:00:44.34 bitrate=3506.2kbits/s speed=1.43x    
    
    Last message repeated 1 times
    
[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    
[mpegts @ 0x33af360] PES packet size mismatch
    
[aac_latm @ 0x3587360] Number of bands (59) exceeds limit (45).
    
Error while decoding stream #0:7: Invalid data found when processing input
    
    Last message repeated 1 times
    
[h264 @ 0x33d6d20] mmco: unref short failure
    
    Last message repeated 1 times
    
[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    
[h264 @ 0x33d6d20] mmco: unref short failureime=00:00:45.05 bitrate=3491.2kbits/s speed=1.43x    
    
    Last message repeated 1 times
    
[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    
[h264 @ 0x33d6d20] mmco: unref short failure
    
    Last message repeated 1 times
    
[h264 @ 0x33d6d20] number of reference frames (0+5) exceeds max (4; probably corrupt input), discarding one
    
[mpegts @ 0x33af360] PES packet size mismatchme=00:00:47.74 bitrate=3470.1kbits/s speed=1.43x    
    
    Last message repeated 1 times
    
[h264 @ 0x33d6d20] error while decoding MB 97 35, bytestream -12
    
Error while decoding stream #0:7: Invalid data found when processing input
    
Error while decoding stream #0:8: Invalid data found when processing input
    
frame= 1404 fps= 42 q=31.0 Lsize=   20396kB time=00:00:47.88 bitrate=3489.5kbits/s speed=1.42x    
    
video:14144kB audio:4429kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 9.813825%

    You could notice by following message :

    **

    Output #0, mpegts, to '304_1800.ts':
    
  Metadata:
    
    encoder         : Lavf57.72.101
    
    Stream #0:0: Video: mpeg2video (Main), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 29.97 fps, 90k tbn, 29.97 tbc
    
    Metadata:
    
      encoder         : Lavc57.93.100 mpeg2video
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
    
    Metadata:
    
      encoder         : Lavc57.93.100 mp2
    
    Stream #0:2: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
    
    Metadata:
    
      encoder         : Lavc57.93.100 mp2

    **

    If so, could I avoid the transcoding by command ? Or it is a necessary ?
    It it is a need, WHY ?

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