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• FFMPEG does HTTP range request only once (HTML5 MediaStream/WebM)

  17 décembre 2018, par Youssef Gamil

  The Issue

  I am trying to pass HTML5 MediaStream coming from a browser’s webcam to a Socket.IO namespace which is buffered and be accessible to FFMPEG through HTTP endpoint in form of HTTP partial/range requests. Although, it works on perfectly on Firefox/Chrome.

  Here, I have wrapped a sample and pushed it to a GitHub repo

  Environment

  • FireFox or Chrome (but not Safari)
  • Node & NPM

  Install

  • npm i from the project directory

  Run

  • npm start : to start the express server
  • Open http://localhost:3000 in Firefox or Chrome, and accept the webcam access dialog.
  • npm run ffmpeg -i http://localhost:3000/view output.webm : TODO : this doesn’t output the full stream
    • http://localhost:3000/view will be visible once it was opened in Firefox/Chrome and they’ll keep requesting till the end of stream or server down.
    • note, npm run ffmpeg ... is a just a shortcut to ffmpeg executable dependency which should be installed at startup in node_modules/@ffmpeg-installer/linux-x64/ffmpeg (which may differ depending on your OS)

  FFMPEG Log

  What I get after running ffmpeg -v trace -i http://localhost:3000/view -y tmp.mp4 :

  Reading option '-v' ... matched as option 'v' (set logging level) with argument 'trace'.
  
  Reading option '-i' ... matched as input url with argument 'http://localhost:3000/view'.
  
  Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
  
  Reading option 'tmp.mp4' ... matched as output url.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option v (set logging level) with argument trace.
  
  Applying option y (overwrite output files) with argument 1.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input url http://localhost:3000/view.
  
  Successfully parsed a group of options.
  
  Opening an input file: http://localhost:3000/view.
  
  [NULL @ 0x65f1c40] Opening 'http://localhost:3000/view' for reading
  
  [http @ 0x65f2540] Setting default whitelist 'http,https,tls,rtp,tcp,udp,crypto,httpproxy'
  
  [tcp @ 0x65f4000] Original list of addresses:
  
  [tcp @ 0x65f4000] Address 127.0.0.1 port 3000
  
  [tcp @ 0x65f4000] Interleaved list of addresses:
  
  [tcp @ 0x65f4000] Address 127.0.0.1 port 3000
  
  [tcp @ 0x65f4000] Starting connection attempt to 127.0.0.1 port 3000
  
  [tcp @ 0x65f4000] Successfully connected to 127.0.0.1 port 3000
  
  [http @ 0x65f2540] request: GET /view HTTP/1.1
  
  User-Agent: Lavf/58.18.104
  
  Accept: */*
  
  Range: bytes=0-
  
  Connection: close
  
  Host: localhost:3000
  
  Icy-MetaData: 1
  
  
  
  
  
  [http @ 0x65f2540] header='HTTP/1.1 206 Partial Content'
  
  [http @ 0x65f2540] http_code=206
  
  [http @ 0x65f2540] header='X-Powered-By: Express'
  
  [http @ 0x65f2540] header='Access-Control-Allow-Origin: *'
  
  [http @ 0x65f2540] header='Content-Range: bytes 0-1391616/1073741824'
  
  [http @ 0x65f2540] header='Accept-Ranges: bytes'
  
  [http @ 0x65f2540] header='Content-Length: 1391616'
  
  [http @ 0x65f2540] header='Connection: close'
  
  [http @ 0x65f2540] header='Content-Type: video/webm'
  
  [http @ 0x65f2540] header='Date: Mon, 17 Dec 2018 10:15:14 GMT'
  
  [http @ 0x65f2540] header=''
  
  Probing matroska,webm score:100 size:2048
  
  Probing mp3 score:1 size:2048
  
  [matroska,webm @ 0x65f1c40] Format matroska,webm probed with size=2048 and score=100
  
  st:0 removing common factor 1000000 from timebase
  
  st:1 removing common factor 1000000 from timebase
  
  [matroska,webm @ 0x65f1c40] Before avformat_find_stream_info() pos: 317 bytes read:3837 seeks:0 nb_streams:2
  
  [matroska,webm @ 0x65f1c40] All info found
  
  [matroska,webm @ 0x65f1c40] rfps: 29.750000 0.016025
  
  [matroska,webm @ 0x65f1c40] rfps: 29.833333 0.013167
  
  [matroska,webm @ 0x65f1c40] rfps: 29.916667 0.012378
  
  [matroska,webm @ 0x65f1c40] rfps: 30.000000 0.013659
  
  [matroska,webm @ 0x65f1c40] rfps: 29.970030 0.012960
  
  [matroska,webm @ 0x65f1c40] stream 0: start_time: 0.000 duration: -9223372036854776.000
  
  [matroska,webm @ 0x65f1c40] stream 1: start_time: -0.001 duration: -9223372036854776.000
  
  [matroska,webm @ 0x65f1c40] format: start_time: -0.001 duration: -9223372036854.775 bitrate=0 kb/s
  
  [matroska,webm @ 0x65f1c40] After avformat_find_stream_info() pos: 467388 bytes read:469955 seeks:0 frames:115
  
  Input #0, matroska,webm, from 'http://localhost:3000/view':
  
    Metadata:
  
      encoder         : QTmuxingAppLibWebM-0.0.1
  
    Duration: N/A, start: -0.001000, bitrate: N/A
  
      Stream #0:0(eng), 41, 1/1000: Video: vp8, 1 reference frame, yuv420p(progressive), 640x480, 0/1, SAR 1:1 DAR 4:3, 1k tbr, 1k tbn, 1k tbc (default)
  
      Stream #0:1(eng), 74, 1/1000: Audio: opus, 48000 Hz, stereo, fltp, delay 312 (default)
  
  Successfully opened the file.
  
  Parsing a group of options: output url tmp.mp4.

• FFmpeg unable to save file on Android : Output file #0 does not contain any stream

  16 mai 2022, par John M.

  I'm having difficulty when saving a RTSP stream into internal storage using ffmpeg-kit -i rtsp://192.168.100.60:554/stream1 -c:v copy -c:a copy -t 5 /data/user/0/com.arthenica.ffmpegkit.test/files/test.mp4. The command is called using FFmpegKit.executeAsync(command, ...). There're issues with the circular_buffer_size option, but I read that the warnings could be ignored. The command runs fine on desktop using ffmpeg. Please find below the log.

  


  Any advice would be appreciated.

  


  ffmpeg started on 2022-05-16 at 15:27:54
Report written to "/data/user/0/com.arthenica.ffmpegkit.test/cache/ffreport.txt"
Log level: 48
Command line:
ffmpeg-kit -i rtsp://192.168.100.60:554/stream1 -c:v copy -c:a copy -t 5 /data/user/0/com.arthenica.ffmpegkit.test/files/test.mp4
ffmpeg version v4.5-dev-3393-g30322ebe3c Copyright (c) 2000-2021 the FFmpeg developers
  built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
  configuration: --cross-prefix=i686-linux-android- --sysroot=/files/android-sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/linux-x86_64/sysroot --prefix=/storage/light/projects/ffmpeg-kit/prebuilt/android-x86-lts/ffmpeg --pkg-config=/usr/bin/pkg-config --enable-version3 --arch=i686 --cpu=i686 --target-os=android --disable-neon --disable-asm --disable-inline-asm --ar=i686-linux-android-ar --cc=i686-linux-android16-clang --cxx=i686-linux-android16-clang++ --ranlib=i686-linux-android-ranlib --strip=i686-linux-android-strip --nm=i686-linux-android-nm --extra-libs='-L/storage/light/projects/ffmpeg-kit/prebuilt/android-x86-lts/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-static --enable-shared --enable-pthreads --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --  libavutil      57. 13.100 / 57. 13.100
  libavcodec     59. 15.102 / 59. 15.102
  libavformat    59. 10.100 / 59. 10.100
  libavdevice    59.  1.100 / 59.  1.100
  libavfilter     8. 21.100 /  8. 21.100
  libswscale      6.  1.102 /  6.  1.102
  libswresample   4.  0.100 /  4.  0.100
Splitting the commandline.
Reading option '-i' ... matched as input url with argument 'rtsp://192.168.100.60:554/stream1'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'copy'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'copy'.
Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '5'.
Reading option '/data/user/0/com.arthenica.ffmpegkit.test/files/test.mp4' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Successfully parsed a group of options.
Parsing a group of options: input url rtsp://192.168.100.60:554/stream1.
Successfully parsed a group of options.
Opening an input file: rtsp://192.168.100.60:554/stream1.
[tcp @ 0xa21d3a80] No default whitelist set
[tcp @ 0xa21d3a80] Original list of addresses:
[tcp @ 0xa21d3a80] Address 192.168.100.60 port 554
[tcp @ 0xa21d3a80] Interleaved list of addresses:
[tcp @ 0xa21d3a80] Address 192.168.100.60 port 554
[tcp @ 0xa21d3a80] Starting connection attempt to 192.168.100.60 port 554
[tcp @ 0xa21d3a80] Successfully connected to 192.168.100.60 port 554
[rtsp @ 0xb25b5a00] SDP:
v=0
o=- 14665860 31787219 1 IN IP4 192.168.100.60
s=Session streamed by "MERCURY RTSP Server"
t=0 0
a=smart_encoder:virtualIFrame=1
m=video 0 RTP/AVP 96
c=IN IP4 0.0.0.0
b=AS:4096
a=range:npt=0-
a=control:track1
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1; profile-level-id=4D4020; sprop-parameter-sets=Z01AIJWgFAF34maIAAADAAgAAAMBlCA=,aO48gA==

Failed to parse interval end specification ''
[rtsp @ 0xb25b5a00] video codec set to: h264
[rtsp @ 0xb25b5a00] RTP Packetization Mode: 1
[rtsp @ 0xb25b5a00] RTP Profile IDC: 4d Profile IOP: 40 Level: 20
[rtsp @ 0xb25b5a00] Extradata set to 0xb25abdf0 (size: 35)
[rtp @ 0xb25abe60] No default whitelist set
[udp @ 0xb25abed0] No default whitelist set
[udp @ 0xb25abed0] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
[udp @ 0xb25abed0] end receive buffer size reported is 524288
[udp @ 0xb25abf40] No default whitelist set
[udp @ 0xb25abf40] 'circular_buffer_size' option was set but it is not supported on this build (pthread support is required)
[udp @ 0xb25abf40] end receive buffer size reported is 524288
[rtsp @ 0xb25b5a00] setting jitter buffer size to 500
[rtsp @ 0xb25b5a00] hello state=0
Failed to parse interval end specification ''
[h264 @ 0x907e5b00] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x907e5b00] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0x907e5b00] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0x907e5b00] nal_unit_type: 8(PPS), nal_ref_idc: 3
[rtsp @ 0xb25b5a00] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, rtsp, from 'rtsp://192.168.100.60:554/stream1':
  Metadata:
    title           : Session streamed by "MERCURY RTSP Server"
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0, 0, 1/90000: Video: h264, none, 90k tbr, 90k tbn
Successfully opened the file.
Parsing a group of options: output url /data/user/0/com.arthenica.ffmpegkit.test/files/test.mp4.
Applying option c:v (codec name) with argument copy.
Applying option c:a (codec name) with argument copy.
Applying option t (record or transcode "duration" seconds of audio/video) with argument 5.
Successfully parsed a group of options.
Opening an output file: /data/user/0/com.arthenica.ffmpegkit.test/files/test.mp4.
Output #0, mp4, to '/data/user/0/com.arthenica.ffmpegkit.test/files/test.mp4':
Output file #0 does not contain any stream


  


• log : Document AV_LOG_C usage

  3 avril 2014, par Luca Barbato

  log : Document AV_LOG_C usage
  And move outside the wrong doxygen group.
  

  • [DBH] libavutil/log.h