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  • FFmpeg splitting large files

    1er février 2016, par Yusaf Khaliq

    I need to split a large video file into multiple pieces quickly and without files with errors. The basic idea is, I have a 2GB video file which I want to change to multiple formats. I have read some encoders can not make use of more than 1 core when encoding to a different format. So I had the idea to split the large file (which is very quick) into 4/8 pieces depending on how many cores I have available on individual servers. re-encode each piece to a new format and use these to display video in sequence.

    so

    testfile.mp4

    becomes

    1. testfile_piece_1.mp4
    2. testfile_piece_2.mp4
    3. testfile_piece_3.mp4
    4. testfile_piece_4.mp4

    these can then be individually be converted.

    The solution should not be format specific. However I have found issues with mp4 files.

    I have tried the command below, which works really well and fast but creates files with errors.

    ffmpeg -i testfile.mp4 -ss 00:00:00 -t 00:20:00 -c copy testfile_piece_1.mp4

    When I play the testfile_piece_1.mp4 on VLC it works fine. An issue arises when converting the split file to a different height and width mp4 file. I would get an error similar to "moov atom not found"

    I tried adding -movflags faststart with no luck

    I then came across this library https://code.google.com/archive/p/moovrelocator/ which fixed the moov issue but I would then get an error with regards to aac "Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height"

    The other way of splitting the files is useless but involved re-encoding the file. not too bad for smaller file size but the 2GB file would probably take days to complete.

    Is there a way to split the largr file quickly without producing files with errors ? I have been working on it for days with no luck.

    Console output for comment - FFmpeg splitting large files

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/usr/share/nginx/html/uploads/testfile01.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf56.36.100
     Duration: 00:05:02.08, start: 302.120000, bitrate: 3254 kb/s
       Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709)                                  , 1920x1080 [SAR 1:1 DAR 16:9], 3252 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (de                                  fault)
       Metadata:
         handler_name    : VideoHandler
    [libx264 @ 0x165ffc0] width not divisible by 2 (853x480)
    Output #0, mp4, to '/usr/share/nginx/html/uploads/testfile01_480.mp4':
     Metadata:
       major_brand     : isom
       minor_version   : 512
       compatible_brands: isomiso2avc1mp41
       encoder         : Lavf56.36.100
       Stream #0:0(und): Video: h264, none, q=2-31, 128 kb/s, SAR 2560:2559 DAR 0:0                                  , 25 fps (default)
       Metadata:
         handler_name    : VideoHandler
         encoder         : Lavc56.41.100 libx264
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    Error while opening encoder for output stream #0:0 - maybe incorrect parameters                                   such as bit_rate, rate, width or height

    console output 2

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/usr/share/nginx/html/uploads/testfile.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6avc1mp41
       creation_time   : 2016-01-24 04:26:37
     Duration: 01:15:58.08, start: 0.000000, bitrate: 3163 kb/s
       Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 3161 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc (default)
       Metadata:
         creation_time   : 2016-01-24 04:26:37
         handler_name    : VideoHandler
    [segment @ 0x1197060] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    Output #0, segment, to '/usr/share/nginx/html/uploads/testfile%02d.mp4':
     Metadata:
       major_brand     : dash
       minor_version   : 0
       compatible_brands: iso6avc1mp41
       encoder         : Lavf56.36.100
       Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 3161 kb/s, 25 fps, 25 tbr, 12800 tbn, 25 tbc (default)
       Metadata:
         creation_time   : 2016-01-24 04:26:37
         handler_name    : VideoHandler
    Stream mapping:
     Stream #0:0 -> #0:0 (copy)
    Press [q] to stop, [?] for help
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
    [mp4 @ 0x11512a0] Codec for stream 0 does not use global headers but container format requires global headers
  • How to use direct264 in Directshow ?

    19 août 2016, par Phung Tien Trieu

    I am finding a h264 (x264) directshow filter for my application and i found project direct264 here : https://sourceforge.net/projects/direct264

    When can see dump.ax from binary package but when i load it to GraphStudioNext (or try to register it by using regsvr32) i see error :

    http://tientrieu.net/wp-content/uploads/2016/08/direct264_load_error.png

  • HTTP Livestreaming with ffmpeg

    25 août 2016, par Hugo14453

    Some context : I have an MKV file, I am attempting to stream it to http://localhost:8090/test.flv as an flv file.

    The stream begins and then immediately ends.

    The command I am using is :

    sudo ffmpeg -re -i input.mkv -c:v libx264 -maxrate 1000k -bufsize 2000k -an -bsf:v h264_mp4toannexb -g 50 http://localhost:8090/test.flv

    A breakdown of what I believe these options do incase this post becomes useful for someone else :

    sudo

    Run as root

    ffmpeg

    The stream command thingy

    -re

    Stream in real-time

    -i input.mkv

    Input option and path to input file

    -c:v libx264

    Use codec libx264 for conversion

    -maxrate 1000k -bufsize 2000k

    No idea, some options for conversion, seems to help

    -an -bsf:v h264_mp4toannexb

    Audio options I think, not sure really. Also seems to help

    -g 50

    Still no idea, maybe frame rateframerateframerateframerate ?

    http://localhost:8090/test.flv

    Output using http protocol to localhost on port 8090 as a file called test.flv

    Anyway the actual issue I have is that it begins to stream for about a second and then immediately ends.

    The mpeg command result :

    ffmpeg version N-80901-gfebc862 Copyright (c) 2000-2016 the FFmpeg developers
     built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
     configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
     libavutil      55. 28.100 / 55. 28.100
     libavcodec     57. 48.101 / 57. 48.101
     libavformat    57. 41.100 / 57. 41.100
     libavdevice    57.  0.102 / 57.  0.102
     libavfilter     6. 47.100 /  6. 47.100
     libavresample   3.  0.  0 /  3.  0.  0
     libswscale      4.  1.100 /  4.  1.100
     libswresample   2.  1.100 /  2.  1.100
     libpostproc    54.  0.100 / 54.  0.100
    Input #0, matroska,webm, from 'input.mkv':
     Metadata:
       encoder         : libebml v1.3.0 + libmatroska v1.4.0
       creation_time   : 1970-01-01 00:00:02
     Duration: 00:01:32.26, start: 0.000000, bitrate: 4432 kb/s
       Stream #0:0(eng): Video: h264 (High 10), yuv420p10le, 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
       Stream #0:1(nor): Audio: flac, 48000 Hz, stereo, s16 (default)
    [libx264 @ 0x2e1c380] using SAR=1/1
    [libx264 @ 0x2e1c380] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    [libx264 @ 0x2e1c380] profile High, level 4.0
    [libx264 @ 0x2e1c380] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=50 keyint_min=5 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=1000 vbv_bufsize=2000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
    [flv @ 0x2e3f0a0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
    Output #0, flv, to 'http://localhost:8090/test.flv':
     Metadata:
       encoder         : Lavf57.41.100
       Stream #0:0(eng): Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 23.98 fps, 1k tbn, 23.98 tbc (default)
       Metadata:
         encoder         : Lavc57.48.101 libx264
       Side data:
         cpb: bitrate max/min/avg: 1000000/0/0 buffer size: 2000000 vbv_delay: -1
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    Press [q] to stop, [?] for help
    Killed   26 fps= 26 q=0.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x  

    The ffserver outputs :

    Sat Aug 20 12:40:11 2016 File '/test.flv' not found
    Sat Aug 20 12:40:11 2016 [SERVER IP] - - [POST] "/test.flv HTTP/1.1" 404 189

    The config file is :

    #Sample ffserver configuration file

    # 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.
    Port 8090

    # Address on which the server is bound. Only useful if you have
    # several network interfaces.
    BindAddress 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 -

    # Suppress that if you want to launch ffserver as a daemon.
    #NoDaemon


    ##################################################################
    # 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>

    ACL allow 192.168.0.0 192.168.255.255

    # You must use 'ffmpeg' to send a live feed to ffserver. In this
    # example, you can type:
    #
    #ffmpeg http://localhost:8090/test.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 200m

    # 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

    </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 2

    # 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 hd1080

    # 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 localhost

    # You can deny ranges of addresses (or single addresses)
    #ACL DENY <first 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.

    </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
    #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
    #Author "Me"
    #Copyright "Super MegaCorp"
    #Title "Test stream from disk"
    #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>


    #http://www.ffmpeg.org/

    Any help is greatly appreciated, I will do my best draw a picture of the best answer based on their username.