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• TCP connection refused with FFMPEG

  2 février 2017, par Samul

  OFFICIAL EDIT :

  I thank you so much for your help but I am still encountering problems.

  My ffserver.conf file is like this :

  # Port on which the server is listening. You must select a different
  
  # port from your standard HTTP web server if it is running on the same
  
  # computer.
  
  HTTPPort 8090
  
  
  
  # Address on which the server is bound. Only useful if you have
  
  # several network interfaces.
  
  HTTPBindAddress 0.0.0.0
  
  
  
  # Number of simultaneous HTTP connections that can be handled. It has
  
  # to be defined *before* the MaxClients parameter, since it defines the
  
  # MaxClients maximum limit.
  
  MaxHTTPConnections 2000
  
  
  
  # Number of simultaneous requests that can be handled. Since FFServer
  
  # is very fast, it is more likely that you will want to leave this high
  
  # and use MaxBandwidth, below.
  
  MaxClients 1000
  
  
  
  # This the maximum amount of kbit/sec that you are prepared to
  
  # consume when streaming to clients.
  
  MaxBandwidth 1000
  
  
  
  # Access log file (uses standard Apache log file format)
  
  # '-' is the standard output.
  
  CustomLog -
  
  
  
  ##################################################################
  
  # Definition of the live feeds. Each live feed contains one video
  
  # and/or audio sequence coming from an ffmpeg encoder or another
  
  # ffserver. This sequence may be encoded simultaneously with several
  
  # codecs at several resolutions.
  
  
  
  <feed>
  
  
  
  # You must use 'ffmpeg' to send a live feed to ffserver. In this
  
  # example, you can type:
  
  #
  
  # ffmpeg http://localhost:8090/feed1.ffm
  
  
  
  # ffserver can also do time shifting. It means that it can stream any
  
  # previously recorded live stream. The request should contain:
  
  # "http://xxxx?date=[YYYY-MM-DDT][[HH:]MM:]SS[.m...]".You must specify
  
  # a path where the feed is stored on disk. You also specify the
  
  # maximum size of the feed, where zero means unlimited. Default:
  
  # File=/tmp/feed_name.ffm FileMaxSize=5M
  
  File /tmp/feed1.ffm
  
  FileMaxSize 200K
  
  
  
  # You could specify
  
  # ReadOnlyFile /saved/specialvideo.ffm
  
  # This marks the file as readonly and it will not be deleted or updated.
  
  
  
  # Specify launch in order to start ffmpeg automatically.
  
  # First ffmpeg must be defined with an appropriate path if needed,
  
  # after that options can follow, but avoid adding the http:// field
  
  #Launch ffmpeg
  
  
  
  # Only allow connections from localhost to the feed.
  
  #ACL allow 127.0.0.1
  
  #ACL allow 189.34.0.158
  
  </feed>
  
  
  
  
  
  ##################################################################
  
  # Now you can define each stream which will be generated from the
  
  # original audio and video stream. Each format has a filename (here
  
  # 'test1.mpg'). FFServer will send this stream when answering a
  
  # request containing this filename.
  
  
  
  <stream>
  
  
  
  # coming from live feed 'feed1'
  
  Feed feed1.ffm
  
  
  
  # Format of the stream : you can choose among:
  
  # mpeg       : MPEG-1 multiplexed video and audio
  
  # mpegvideo  : only MPEG-1 video
  
  # mp2        : MPEG-2 audio (use AudioCodec to select layer 2 and 3 codec)
  
  # ogg        : Ogg format (Vorbis audio codec)
  
  # rm         : RealNetworks-compatible stream. Multiplexed audio and video.
  
  # ra         : RealNetworks-compatible stream. Audio only.
  
  # mpjpeg     : Multipart JPEG (works with Netscape without any plugin)
  
  # jpeg       : Generate a single JPEG image.
  
  # asf        : ASF compatible streaming (Windows Media Player format).
  
  # swf        : Macromedia Flash compatible stream
  
  # avi        : AVI format (MPEG-4 video, MPEG audio sound)
  
  Format mpeg
  
  
  
  # Bitrate for the audio stream. Codecs usually support only a few
  
  # different bitrates.
  
  AudioBitRate 32
  
  
  
  # Number of audio channels: 1 = mono, 2 = stereo
  
  AudioChannels 1
  
  
  
  # Sampling frequency for audio. When using low bitrates, you should
  
  # lower this frequency to 22050 or 11025. The supported frequencies
  
  # depend on the selected audio codec.
  
  AudioSampleRate 44100
  
  
  
  # Bitrate for the video stream
  
  VideoBitRate 64
  
  
  
  # Ratecontrol buffer size
  
  VideoBufferSize 40
  
  
  
  # Number of frames per second
  
  VideoFrameRate 3
  
  
  
  # Size of the video frame: WxH (default: 160x128)
  
  # The following abbreviations are defined: sqcif, qcif, cif, 4cif, qqvga,
  
  # qvga, vga, svga, xga, uxga, qxga, sxga, qsxga, hsxga, wvga, wxga, wsxga,
  
  # wuxga, woxga, wqsxga, wquxga, whsxga, whuxga, cga, ega, hd480, hd720,
  
  # hd1080
  
  VideoSize 160x128
  
  
  
  # Transmit only intra frames (useful for low bitrates, but kills frame rate).
  
  #VideoIntraOnly
  
  
  
  # If non-intra only, an intra frame is transmitted every VideoGopSize
  
  # frames. Video synchronization can only begin at an intra frame.
  
  VideoGopSize 12
  
  
  
  # More MPEG-4 parameters
  
  # VideoHighQuality
  
  # Video4MotionVector
  
  
  
  # Choose your codecs:
  
  #AudioCodec mp2
  
  #VideoCodec mpeg1video
  
  
  
  # Suppress audio
  
  #NoAudio
  
  
  
  # Suppress video
  
  #NoVideo
  
  
  
  #VideoQMin 3
  
  #VideoQMax 31
  
  
  
  # Set this to the number of seconds backwards in time to start. Note that
  
  # most players will buffer 5-10 seconds of video, and also you need to allow
  
  # for a keyframe to appear in the data stream.
  
  #Preroll 15
  
  
  
  # ACL:
  
  
  
  # You can allow ranges of addresses (or single addresses)
  
  #ACL ALLOW <first address="address"> <last address="address">
  
  
  
  # You can deny ranges of addresses (or single addresses)
  
  #ACL DENY <first address="address"> <last address="address">
  
  
  
  # You can repeat the ACL allow/deny as often as you like. It is on a per
  
  # stream basis. The first match defines the action. If there are no matches,
  
  # then the default is the inverse of the last ACL statement.
  
  #
  
  # Thus 'ACL allow localhost' only allows access from localhost.
  
  # 'ACL deny 1.0.0.0 1.255.255.255' would deny the whole of network 1 and
  
  # allow everybody else.
  
  
  
  </last></first></last></first></stream>
  
  
  
  
  
  ##################################################################
  
  # Example streams
  
  
  
  
  
  # Multipart JPEG
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format mpjpeg
  
  #VideoFrameRate 2
  
  #VideoIntraOnly
  
  #NoAudio
  
  #Strict -1
  
  #</stream>
  
  
  
  
  
  # Single JPEG
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format jpeg
  
  #VideoFrameRate 2
  
  #VideoIntraOnly
  
  ##VideoSize 352x240
  
  #NoAudio
  
  #Strict -1
  
  #</stream>
  
  
  
  
  
  # Flash
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format swf
  
  #VideoFrameRate 2
  
  #VideoIntraOnly
  
  #NoAudio
  
  #</stream>
  
  
  
  
  
  # ASF compatible
  
  
  
  <stream>
  
  Feed feed1.ffm
  
  Format asf
  
  VideoFrameRate 15
  
  VideoSize 352x240
  
  VideoBitRate 256
  
  VideoBufferSize 40
  
  VideoGopSize 30
  
  AudioBitRate 64
  
  StartSendOnKey
  
  </stream>
  
  
  
  
  
  # MP3 audio
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format mp2
  
  #AudioCodec mp3
  
  #AudioBitRate 64
  
  #AudioChannels 1
  
  #AudioSampleRate 44100
  
  #NoVideo
  
  #</stream>
  
  
  
  
  
  # Ogg Vorbis audio
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Metadata title "Stream title"
  
  #AudioBitRate 64
  
  #AudioChannels 2
  
  #AudioSampleRate 44100
  
  #NoVideo
  
  #</stream>
  
  
  
  
  
  # Real with audio only at 32 kbits
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format rm
  
  #AudioBitRate 32
  
  #NoVideo
  
  #NoAudio
  
  #</stream>
  
  
  
  
  
  # Real with audio and video at 64 kbits
  
  
  
  #<stream>
  
  #Feed feed1.ffm
  
  #Format rm
  
  #AudioBitRate 32
  
  #VideoBitRate 128
  
  #VideoFrameRate 25
  
  #VideoGopSize 25
  
  #NoAudio
  
  #</stream>
  
  
  
  
  
  ##################################################################
  
  # A stream coming from a file: you only need to set the input
  
  # filename and optionally a new format. Supported conversions:
  
  #    AVI -> ASF
  
  
  
  #<stream>
  
  #File "/usr/local/httpd/htdocs/tlive.rm"
  
  #NoAudio
  
  #</stream>
  
  
  
  #<stream>
  
  #File "/usr/local/httpd/htdocs/test.asf"
  
  #NoAudio
  
  #Metadata author "Me"
  
  #Metadata copyright "Super MegaCorp"
  
  #Metadata title "Test stream from disk"
  
  #Metadata comment "Test comment"
  
  #</stream>
  
  
  
  
  
  ##################################################################
  
  # RTSP examples
  
  #
  
  # You can access this stream with the RTSP URL:
  
  #   rtsp://localhost:5454/test1-rtsp.mpg
  
  #
  
  # A non-standard RTSP redirector is also created. Its URL is:
  
  #   http://localhost:8090/test1-rtsp.rtsp
  
  
  
  #<stream>
  
  #Format rtp
  
  #File "/usr/local/httpd/htdocs/test1.mpg"
  
  #</stream>
  
  
  
  
  
  # Transcode an incoming live feed to another live feed,
  
  # using libx264 and video presets
  
  
  
  #<stream>
  
  #Format rtp
  
  #Feed feed1.ffm
  
  #VideoCodec libx264
  
  #VideoFrameRate 24
  
  #VideoBitRate 100
  
  #VideoSize 480x272
  
  #AVPresetVideo default
  
  #AVPresetVideo baseline
  
  #AVOptionVideo flags +global_header
  
  #
  
  #AudioCodec libfaac
  
  #AudioBitRate 32
  
  #AudioChannels 2
  
  #AudioSampleRate 22050
  
  #AVOptionAudio flags +global_header
  
  #</stream>
  
  
  
  ##################################################################
  
  # SDP/multicast examples
  
  #
  
  # If you want to send your stream in multicast, you must set the
  
  # multicast address with MulticastAddress. The port and the TTL can
  
  # also be set.
  
  #
  
  # An SDP file is automatically generated by ffserver by adding the
  
  # 'sdp' extension to the stream name (here
  
  # http://localhost:8090/test1-sdp.sdp). You should usually give this
  
  # file to your player to play the stream.
  
  #
  
  # The 'NoLoop' option can be used to avoid looping when the stream is
  
  # terminated.
  
  
  
  #<stream>
  
  #Format rtp
  
  #File "/usr/local/httpd/htdocs/test1.mpg"
  
  #MulticastAddress 224.124.0.1
  
  #MulticastPort 5000
  
  #MulticastTTL 16
  
  #NoLoop
  
  #</stream>
  
  
  
  
  
  ##################################################################
  
  # Special streams
  
  
  
  # Server status
  
  
  
  <stream>
  
  Format status
  
  
  
  # Only allow local people to get the status
  
  ACL allow localhost
  
  ACL allow 192.168.0.0 192.168.255.255
  
  
  
  #FaviconURL http://pond1.gladstonefamily.net:8080/favicon.ico
  
  </stream>
  
  
  
  
  
  # Redirect index.html to the appropriate site
  
  
  
  <redirect>
  
  URL http://www.ffmpeg.org/
  
  </redirect>

  I started my server and executed :

  ffserver -d -f /usr/share/doc/ffmpeg-2.6.8/ffserver.conf

  No error message and everything looks fine.

  After that I execute this (in your answer, I think you forgot the port number) :

  ffmpeg -i "rtsp://200.180.90.95:554/onvif1" -r 25 -s 640x480 -c:v libx264 -flags +global_header -f flv "http://45.79.207.38:8090/feed1.ffm"

  Then I get this log :

    libavutil      54. 20.100 / 54. 20.100
  
    libavcodec     56. 26.100 / 56. 26.100
  
    libavformat    56. 25.101 / 56. 25.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 11.102 /  5. 11.102
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [h264 @ 0x1a23580] RTP: missed 1 packets
  
  [pcm_alaw @ 0x1a24360] RTP: missed 2 packets
  
  [h264 @ 0x1a23580] RTP: missed 1 packets
  
  Invalid UE golomb code
  
  [h264 @ 0x1a23580] cbp too large (3199971767) at 76 33
  
  [h264 @ 0x1a23580] error while decoding MB 76 33
  
  [h264 @ 0x1a23580] Cannot use next picture in error concealment
  
  [h264 @ 0x1a23580] concealing 933 DC, 933 AC, 933 MV errors in P frame
  
  [h264 @ 0x1a23580] RTP: missed 1 packets
  
  [h264 @ 0x1a23580] cbp too large (62) at 50 24
  
  [h264 @ 0x1a23580] error while decoding MB 50 24
  
  [h264 @ 0x1a23580] Cannot use next picture in error concealment
  
  [h264 @ 0x1a23580] concealing 1679 DC, 1679 AC, 1679 MV errors in P frame
  
  [h264 @ 0x1a23580] RTP: missed 2 packets
  
  [h264 @ 0x1a23580] Cannot use next picture in error concealment
  
  [h264 @ 0x1a23580] concealing 1965 DC, 1965 AC, 1965 MV errors in P frame
  
  [pcm_alaw @ 0x1a24360] RTP: missed 1 packets
  
      Last message repeated 1 times
  
  [h264 @ 0x1a23580] RTP: missed 3 packets
  
  [h264 @ 0x1a23580] mb_type 49 in P slice too large at 74 25
  
  [h264 @ 0x1a23580] error while decoding MB 74 25
  
  [h264 @ 0x1a23580] Cannot use next picture in error concealment
  
  [h264 @ 0x1a23580] concealing 1575 DC, 1575 AC, 1575 MV errors in P frame
  
  [h264 @ 0x1a23580] RTP: missed 2 packets
  
  [h264 @ 0x1a23580] P sub_mb_type 29 out of range at 30 26
  
  [h264 @ 0x1a23580] error while decoding MB 30 26
  
  [h264 @ 0x1a23580] Cannot use next picture in error concealment
  
  [h264 @ 0x1a23580] concealing 1539 DC, 1539 AC, 1539 MV errors in P frame
  
  [h264 @ 0x1a23580] RTP: missed 1 packets
  
  [h264 @ 0x1a23580] out of range intra chroma pred mode at 72 29
  
  [h264 @ 0x1a23580] error while decoding MB 72 29
  
  [h264 @ 0x1a23580] Cannot use next picture in error concealment
  
  [h264 @ 0x1a23580] concealing 1257 DC, 1257 AC, 1257 MV errors in P frame
  
  [h264 @ 0x1a23580] RTP: missed 3 packets
  
  [h264 @ 0x1a23580] negative number of zero coeffs at 48 5
  
  [h264 @ 0x1a23580] error while decoding MB 48 5
  
  [h264 @ 0x1a23580] Cannot use next picture in error concealment
  
  [h264 @ 0x1a23580] concealing 3201 DC, 3201 AC, 3201 MV errors in P frame
  
  [pcm_alaw @ 0x1a24360] RTP: missed 1 packets
  
  [rtsp @ 0x1a20ee0] decoding for stream 0 failed
  
  Guessed Channel Layout for  Input Stream #0.1 : mono
  
  Input #0, rtsp, from 'rtsp://200.180.90.95:554/onvif1':
  
    Metadata:
  
      title           : H.264 Video, RtspServer_0.0.0.2
  
    Duration: N/A, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: h264 (Baseline), yuv420p, 1280x720, 90k tbr, 90k tbn, 180k tbc
  
      Stream #0:1: Audio: pcm_alaw, 8000 Hz, 1 channels, s16, 64 kb/s
  
  [libx264 @ 0x1b728a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  
  [libx264 @ 0x1b728a0] profile High, level 3.0
  
  [libx264 @ 0x1b728a0] 264 - core 142 r2495 6a301b6 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - 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=1 lookahead_threads=1 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
  
  [flv @ 0x1a66300] FLV does not support sample rate 8000, choose from (44100, 22050, 11025)
  
  [flv @ 0x1a66300] Audio codec mp3 not compatible with flv
  
  Output #0, flv, to 'http://45.79.207.38:8090/feed1.ffm':
  
    Metadata:
  
      title           : H.264 Video, RtspServer_0.0.0.2
  
      encoder         : Lavf56.25.101
  
      Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 640x480, q=-1--1, 25 fps, 1k tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc56.26.100 libx264
  
      Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 8000 Hz, mono, s16p
  
      Metadata:
  
        encoder         : Lavc56.26.100 libmp3lame
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  
    Stream #0:1 -> #0:1 (pcm_alaw (native) -> mp3 (libmp3lame))
  
  Could not write header for output file #0 (incorrect codec parameters ?): Function not implemented

  I am doing this in a clean install of CENTOS, no customization. Could you please helpe me ?

• Revision 29747 : On incrémente la version du plugin

  8 juillet 2009, par kent1@… — Log

  On incrémente la version du plugin

• ffmpeg : Combine/merge multiple mp4 videos - not working

  9 juin 2016, par dtbaker

  Here is the command I am using to combine multiple videos :

  ffmpeg -i 75_540_38HQ2.mp4 -i 76_70_20.mp4 -i 76_173_80.mp4 -i 81_186_35.mp4 -vcodec copy -acodec copy Mux1.mp4

  The resulting Mux1.mp4 does not contain all videos. Only the first video (75_540_38HQ2.mp4). The file size of the source and resulting video is below (as you can see, resulting video is slightly larger than first vid) :

  $ ls -lh
  
   rw-r—r— 1 dbaker dbaker  42M 2011-03-24 11:59 75_540_38HQ2.mp4
  
   rw-r—r— 1 dbaker dbaker 236M 2011-03-24 12:09 76_173_80.mp4
  
   rw-r—r— 1 dbaker dbaker  26M 2011-03-24 12:05 76_70_20.mp4
  
   rw-r—r— 1 dbaker dbaker  54M 2011-03-24 12:15 81_186_35.mp4
  
   rw-r—r— 1 dbaker dbaker  44M 2011-03-24 14:48 Mux1.mp4
  

  Here is the output of the ffmpeg command. To me it looks ok, showing the multiple source inputs and the single output.

  FFmpeg version SVN-r26402, Copyright (c) 2000-2011 the FFmpeg developers
    built on Mar 21 2011 18:05:32 with gcc 4.4.5
    configuration : —enable-gpl —enable-version3 —enable-nonfree —enable-postproc —enable-libfaac —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-libxvid —enable-x11grab
    libavutil     50.36. 0 / 50.36. 0
    libavcore      0.16. 1 /  0.16. 1
    libavcodec    52.108. 0 / 52.108. 0
    libavformat   52.93. 0 / 52.93. 0
    libavdevice   52. 2. 3 / 52. 2. 3
    libavfilter    1.74. 0 /  1.74. 0
    libswscale     0.12. 0 /  0.12. 0
    libpostproc   51. 2. 0 / 51. 2. 0
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ’75_540_38HQ2.mp4’ :
    Metadata :
      major_brand : isom
      minor_version : 512
      compatible_brands : isomiso2avc1mp41
      creation_time : 1970-01-01 00:00:00
      encoder : Lavf52.93.0
    Duration : 00:00:29.99, start : 0.000000, bitrate : 11517 kb/s
      Stream #0.0(eng) : Video : h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 11575 kb/s, 29.94 fps, 29.97 tbr, 30k tbn, 59.94 tbc
      Metadata :
        creation_time : 1970-01-01 00:00:00
      Stream #0.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 127 kb/s
      Metadata :
        creation_time : 1970-01-01 00:00:00
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from ’76_70_20.mp4’ :
    Metadata :
      major_brand : isom
      minor_version : 512
      compatible_brands : isomiso2avc1mp41
      creation_time : 1970-01-01 00:00:00
      encoder : Lavf52.93.0
    Duration : 00:00:19.98, start : 0.000000, bitrate : 10901 kb/s
      Stream #1.0(eng) : Video : h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 10804 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc
      Metadata :
        creation_time : 1970-01-01 00:00:00
      Stream #1.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 128 kb/s
      Metadata :
        creation_time : 1970-01-01 00:00:00
  Input #2, mov,mp4,m4a,3gp,3g2,mj2, from ’76_173_80.mp4’ :
    Metadata :
      major_brand : isom
      minor_version : 512
      compatible_brands : isomiso2avc1mp41
      creation_time : 1970-01-01 00:00:00
      encoder : Lavf52.93.0
    Duration : 00:03:09.99, start : 0.000000, bitrate : 10393 kb/s
      Stream #2.0(eng) : Video : h264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], 10321 kb/s, 29.96 fps, 29.97 tbr, 30k tbn, 59.94 tbc
      Metadata :
        creation_time : 1970-01-01 00:00:00
      Stream #2.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 128 kb/s
      Metadata :
        creation_time : 1970-01-01 00:00:00
  Seems stream 0 codec frame rate differs from container frame rate : 119.88 (120000/1001) -> 30000.00 (30000/1)
  
  Input #3, mov,mp4,m4a,3gp,3g2,mj2, from ’81_186_35.mp4’ :
  
    Metadata :
  
      major_brand : isom
  
      minor_version : 512
  
      compatible_brands : isomiso2avc1mp41
  
      creation_time : 1970-01-01 00:00:00
  
      encoder : Lavf52.93.0
  
    Duration : 00:00:35.00, start : 0.000000, bitrate : 12700 kb/s
  
      Stream #3.0(eng) : Video : h264, yuv420p, 1280x720 [PAR 1:1 DAR 16:9], 12620 kb/s, 59.91 fps, 30k tbr, 60k tbn, 119.88 tbc
  
      Metadata :
  
        creation_time : 1970-01-01 00:00:00
  
      Stream #3.1(eng) : Audio : aac, 48000 Hz, stereo, s16, 128 kb/s
  
      Metadata :
  
        creation_time : 1970-01-01 00:00:00
  
  Output #0, mp4, to ’Mux1.mp4’ :
  
    Metadata :
  
      major_brand : isom
  
      minor_version : 512
  
      compatible_brands : isomiso2avc1mp41
  
      creation_time : 1970-01-01 00:00:00
  
      encoder : Lavf52.93.0
  
      Stream #0.0(eng) : Video : libx264, yuv420p, 1280x960 [PAR 1:1 DAR 4:3], q=2-31, 11575 kb/s, 30k tbn, 29.97 tbc
  
      Metadata :
  
        creation_time : 1970-01-01 00:00:00
  
      Stream #0.1(eng) : Audio : libfaac, 48000 Hz, stereo, 128 kb/s
  
      Metadata :
  
        creation_time : 1970-01-01 00:00:00
  
  Stream mapping :
  
    Stream #0.0 -> #0.0
  
    Stream #2.1 -> #0.1
  
  Press [q] to stop encoding
  
  frame=  883 fps=632 q=-1.0 Lsize=   44730kB time=29.40 bitrate=12465.1kbits/s    
  
  video:41678kB audio:2969kB global headers:0kB muxing overhead 0.184548%
  

  Am I doing something blindingly stupid here ?

  The source videos came from a video camera, and are small snippets taken with ffmpeg -i bigfile.mp4 -ss 20 -t 10 -vcodec copy etc..

  Thanks heaps !!
  Dave

  ---

  Edit : couldn’t solve it so I just use avidemux GUI tool. It seemed to append the MP4’s just fine.

  Must be a problem with MP4’s or just the ones that come off a gopro camera.