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• FFmpeg playable MP4 segmented video from RTSP

  5 février 2021, par Michael Novotný

  I have problem with creating playable uncomplete MP4 file created from FFMPEG. In my case I have some infinite RTSP stream (h.264) from IP camera.
My target is record this stream to MP4 files for playback. If i use FFMPEG mp4 muxer, work correctly.

  


  /usr/bin/ffmpeg -progress pipe:5 -use_wallclock_as_timestamps 1 -analyzeduration 10000000 -probesize 10000000 -fflags +igndts -rtsp_transport tcp -hwaccel auto -loglevel warning -i rtsp://****:****@*******:****/ -y -an -vcodec copy -strict experimental -movflags frag_keyframe+empty_moov -f segment -segment_format mp4 -segment_format_options movflags=+faststart -segment_atclocktime 1 -reset_timestamps 1 -strftime 1 -segment_time 15 /Shinobi/videos/bWkwjTWdRt/Rm67cYyq50/test-%S.mp4


  


  FFMPEG will create one MP4 file which still increasing its size. If I try copy or simply open this (uncomplete, still increased ... of course :) ) file, it's correcly play. But it's still only one file ... still bigger and bigger. For long-term recording cam (few weeks) it's not good.
I want segment this stream to multiple smaller MP4 files (as you knows from another typical NVR systems). For example : segment for 30minutes.
I used "segment" muxer.

  


  /usr/bin/ffmpeg -progress pipe:5 -use_wallclock_as_timestamps 1 -analyzeduration 10000000 -probesize 10000000 -fflags +igndts -rtsp_transport tcp -hwaccel auto -loglevel warning -i rtsp://*****:****@*********:****/ -y -an -vcodec copy -strict -2 -movflags frag_keyframe+empty_moov -f mp4 -segment_atclocktime 1 -reset_timestamps 1 -strftime 1 -segment_list pipe:8 -segment_time 15 /Shinobi/videos/bWkwjTWdRt/Rm67cYyq50/test-%S.mp4


  


  It looks like work correctly. New file with defined mask is created every 30 minutes. If I try copy or simply open(and play) anyone "completed 30min segment file" it"s works correctly. Problem is with last file (more precisely : newest, still uncompleted last segment file) - it's not playable (moov atom not found).

  


  I Googled my problem many time with another keywords. I was try many my wonders. I readed FFMPEG documentation maybe 5times.

  


  Problem is with second passthroug which "segment muxer" do (which do -movflags +faststart .. for example). It's logicaly, second passthroug not be did in last(newest) file yet.

  


  Is there way to make it work ? If I want see time for 2-3 mins ago it's no possible wait up to 30minutes for "complete segment" ... and at the same time it is not possible to have a billion files with 2-3sec segments.
How did other NVR systems solve this ? Synology, Hikvision and more has in their file system recorded MP4 soubory which one of them is still uncompleted, still growing, but normaly PLAYABLE.

  


  A few last days I tried this with no success. I'am absolutely angry and sad. I hope that my text is understandable

  


  Thank you

  


  This options has no effect in my case (tried) :

  


  -movflags frag_keyframe+empty_moov

  


  -movflags faststart

  


  -movflags separate_moof

  


  -fragsize *** / -fragtime ***

  


  -strict -2 / -strict experimental

  


• Compiling ffmpeg for iOS and gas-preprocessor.pl

  16 mai 2017, par user500

  I want to compile ffmpeg for iOS. I did it a few times before. But now I’m on clean new Mavericks and on configure I’m always getting

  Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
  
  Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
  
  GNU assembler not found, install gas-preprocessor
  
  
  
  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solving the problem.

  I have current Xcode installed. Also brews. And current gas-preprocessor.pl (https://github.com/yuvi/gas-preprocessor) in usr/bin and also in usr/local/bin.

  ---

  On perl /usr/bin/gas-preprocessor.pl gcc I’m getting Unrecognized input filetype at /usr/bin/gas-preprocessor.pl line 33.

  ---

  This config works :

  ./configure \
  
  --extra-cflags='-arch arm64 -mios-version-min=7.0 -mthumb' \
  
  --extra-ldflags='-arch arm64 -mios-version-min=7.0' \
  
  --enable-cross-compile \
  
  --arch=arm64 \
  
  --target-os=darwin \
  
  --cc=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang \
  
  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk \
  
  --prefix=arm64 \
  
  --disable-doc \
  
  --disable-shared \
  
  --disable-everything \
  
  --enable-static \
  
  --enable-pic \
  
  --disable-muxers \
  
  --enable-muxer=flv \
  
  --disable-demuxers \
  
  --enable-demuxer=h264 \
  
  --enable-demuxer=pcm_s16le \
  
  --disable-devices \
  
  --disable-parsers \
  
  --enable-parser=h264 \
  
  --disable-encoders \
  
  --enable-encoder=aac \
  
  --disable-decoders \
  
  --enable-decoder=h264 \
  
  --enable-decoder=pcm_s16le \
  
  --disable-protocols \
  
  --enable-protocol=rtmp \
  
  --disable-filters \
  
  --disable-bsfs

  ---

  This config throws error above (GNU assembler not found, install gas-preprocessor) :

  ./configure \
  
  --cpu=cortex-a8 \
  
  --extra-cflags='-arch armv7 -mios-version-min=7.0 -mthumb' \
  
  --extra-ldflags='-arch armv7 -mios-version-min=7.0' \
  
  --enable-cross-compile \
  
  --arch=armv7 \
  
  --target-os=darwin \
  
  --cc=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang \
  
  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk \
  
  --prefix=armv7 \
  
  --disable-doc \
  
  --disable-shared \
  
  --disable-everything \
  
  --enable-static \
  
  --enable-pic \
  
  --disable-muxers \
  
  --enable-muxer=flv \
  
  --disable-demuxers \
  
  --enable-demuxer=h264 \
  
  --enable-demuxer=pcm_s16le \
  
  --disable-devices \
  
  --disable-parsers \
  
  --enable-parser=h264 \
  
  --disable-encoders \
  
  --enable-encoder=aac \
  
  --disable-decoders \
  
  --enable-decoder=h264 \
  
  --enable-decoder=pcm_s16le \
  
  --disable-protocols \
  
  --enable-protocol=rtmp \
  
  --disable-filters \
  
  --disable-bsfs

• RTMP to HLS : Segmentation fault

  25 mai 2013, par Wildan Muhlis

  I have tried convert RTMP to HLS with ffmpeg. The segments created without -segment_format mpegts parameter, but it resulting corrupted .m3u8 file, If I add the parameter, segments couldn't created due to below error message.

  Anyone know how to solve it ?

  ffmpeg encoding profile :

  ffmpeg -y -i ${input}" live=1 swfVfy=1" \
  
  -ar 48000 \
  
  -ab 64k \
  
  -s ${WIDTH}x${HEIGHT} \
  
  -vcodec libx264 \
  
  -b:v ${BR} \
  
  -partitions +parti4x4+partp8x8+partb8x8 \
  
  -subq 7 \
  
  -trellis 0 \
  
  -refs 0 \
  
  -coder 0 \
  
  -me_range 16 \
  
  -keyint_min 25 \
  
  -sc_threshold 40 \
  
  -i_qfactor 0.71 \
  
  -bt 200k \
  
  -maxrate ${BR} \
  
  -bufsize ${BR} \
  
  -rc_eq 'blurCplx^(1-qComp)' \
  
  -qcomp 0.6 \
  
  -qmin 30 \
  
  -qmax 51 \
  
  -qdiff 4 \
  
  -level 30 \
  
  -aspect ${WIDTH}:${HEIGHT} \
  
  -g 30 \
  
  -async 2 \
  
  -flags -global_header -map 0 \
  
  -f segment \
  
  -flags +loop \
  
  -segment_time 10 \
  
  -segment_list ${SEGMENT_LIST} \
  
  -segment_format mpegts\
  
  -segment_list_flags +live \
  
  ${OUTPUT}

  Error log :

  ffmpeg version N-53211-g5918b7a Copyright (c) 2000-2013 the FFmpeg developers
  
    built on May 18 2013 09:16:55 with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-3)
  
    configuration: --as=yasm --enable-gpl --enable-pthreads --disable-ffserver --disable-shared --enable-static --enable-gpl --enable-libfdk_aac --enable-libmp3lame --enable-libtheora --enable-libvpx --enable-libx264 --enable-librtmp --enable-nonfree
  
    libavutil      52. 33.100 / 52. 33.100
  
    libavcodec     55. 10.100 / 55. 10.100
  
    libavformat    55.  7.100 / 55.  7.100
  
    libavdevice    55.  0.100 / 55.  0.100
  
    libavfilter     3. 68.101 /  3. 68.101
  
    libswscale      2.  3.100 /  2.  3.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  rtmp server sent error
  
  Metadata:
  
    audiocodecid          .mp3
  
    videokeyframe_frequency5.00
  
    avclevel              30.00
  
    videodevice           ASUS USB2.0 Webcam
  
    audiosamplerate       44100.00
  
    audiochannels         2.00
  
    width                 320.00
  
    videodatarate         200.00
  
    presetname            Custom
  
    audioinputvolume      75.00
  
    creationdate          Sat May 25 20:02:26 2013
  
    videocodecid          avc1
  
    audiodevice           Microphone (Realtek High Defini
  
    avcprofile            66.00
  
    audiodatarate         96.00
  
    height                240.00
  
    framerate             30.00
  
  [flv @ 0x2df2960] max_analyze_duration 5000000 reached at 5018000 microseconds
  
  [flv @ 0x2df2960] decoding for stream 0 failed
  
  Input #0, flv, from 'rtmp://122.22.117.60:1935/oflaDemo/livestream live=1 swfVfy=1':
  
    Metadata:
  
      videokeyframe_frequency: 5
  
      avclevel        : 30
  
      videodevice     : ASUS USB2.0 Webcam
  
      keywords        : 
  
      audiochannels   : 2
  
      presetname      : Custom
  
      copyright       : 
  
      audioinputvolume: 75
  
      creationdate    : Sat May 25 20:02:26 2013
  
                      : 
  
      author          : 
  
      audiodevice     : Microphone (Realtek High Defini
  
      avcprofile      : 66
  
      title           : 
  
      description     : 
  
      rating          : 
  
    Duration: N/A, start: 0.000000, bitrate: 303 kb/s
  
      Stream #0:0: Video: h264 (Baseline), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 204 kb/s, 30 tbr, 1k tbn, 60 tbc
  
      Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16p, 98 kb/s
  
  Segmentation fault