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• building ffmpeg 2.1.8 with MSVC2013 (configure produces errors)

  29 juin 2017, par scaram

  I am trying to build ffmpeg 2.1.8 for a legacy project. I use windows 10, MSVC 2013, MSYS, YASM and this tutorial.

  After

  ./configure --toolchain=msvc --enable-shared

  I see the many errors in config.log, here the first three ones

  1. error : ’test’ declared as an array with a negative size
  2. fatal error C1189 : #error : "unsatisfied condition : defined GLIBC"
  3. fatal error C1083 : File (Include) cannot be opened : "newlib.h" : No such file or directory

  here the more detailed information...

  C:/Users/scaram/AppData/Local/Temp/ffconf.LgAWDJFi.o_preprocessed.c:8859:27: error: 'test' declared as an array with a negative size
  
  ffconf.LgAWDJFi.o_converted.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(1) : error C2118: Negativer Index
  
  check_cpp_condition features.h defined __UCLIBC__
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include 
  
      2   #if !(defined __UCLIBC__)
  
      3   #error "unsatisfied condition: defined __UCLIBC__"
  
      4   #endif
  
  END /tmp/ffconf.RncapARb.c
  
  c99wrap cl -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -nologo -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64 -P -Fi /tmp/ffconf.LgAWDJFi.o /tmp/ffconf.RncapARb.c
  
  ffconf.RncapARb.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(3) : fatal error C1189: #error :  "unsatisfied condition: defined __UCLIBC__"
  
  check_cpp_condition features.h defined __GLIBC__
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include 
  
      2   #if !(defined __GLIBC__)
  
      3   #error "unsatisfied condition: defined __GLIBC__"
  
      4   #endif
  
  END /tmp/ffconf.RncapARb.c
  
  c99wrap cl -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -nologo -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64 -P -Fi /tmp/ffconf.LgAWDJFi.o /tmp/ffconf.RncapARb.c
  
  ffconf.RncapARb.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(3) : fatal error C1189: #error :  "unsatisfied condition: defined __GLIBC__"
  
  check_cpp_condition newlib.h defined _NEWLIB_VERSION
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include 
  
      2   #if !(defined _NEWLIB_VERSION)
  
      3   #error "unsatisfied condition: defined _NEWLIB_VERSION"
  
      4   #endif
  
  END /tmp/ffconf.RncapARb.c
  
  c99wrap cl -D_ISOC99_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -nologo -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64 -P -Fi /tmp/ffconf.LgAWDJFi.o /tmp/ffconf.RncapARb.c
  
  ffconf.RncapARb.c
  
  C:/Users/scaram/AppData/Local/Temp/ffconf.RncapARb.c(1) : fatal error C1083: File (Include) cannot be opened: "newlib.h": No such file or directory
  
  check_header _mingw.h
  
  check_cpp
  
  BEGIN /tmp/ffconf.RncapARb.c
  
      1   #include <_mingw.h>
  
      2   int x;
  
  END /tmp/ffconf.RncapARb.c

  What can I do to make it work ?

• VLC RTSP HTML5 transcoding

  30 mai 2022, par Pierogi

  I'm trying to get audio streaming on an HTML page from an RTSP server.

  


  The RTSP server is the rtsp-simple-server running a command line below.
  
./rtsp-simple-server rtsp-simple-server.yml.
  
The configure file is the default.

  


  The stream player is FFmpeg running a command line below.
  
ffmpeg -re -stream_loop -1 -i myaudio.mp3 -c copy -f rtsp -rtsp_transport tcp rtsp://localhost:8554/mystream

  


  The console log at the time the rtsp-simple-server and the ffmpeg are started is below.

  


  2022/05/29 19:06:38 INF rtsp-simple-server v0.18.4
2022/05/29 19:06:38 INF [RTSP] listener opened on :8554 (TCP), :8000 (UDP/RTP), :8001 (UDP/RTCP)
2022/05/29 19:06:38 INF [RTMP] listener opened on :1935
2022/05/29 19:06:38 INF [HLS] listener opened on :8888
2022/05/29 19:09:16 INF [RTSP] [conn [::1]:62737] opened
2022/05/29 19:09:16 INF [RTSP] [session 271690815] created by [::1]:62737
2022/05/29 19:09:16 INF [RTSP] [session 271690815] is publishing to path 'mystream', 1 track with TCP


  


  And the time the rtsp path(rtsp ://localhost:8554/mystream) is opened by VLC, the contents can be played properly. The additional console log at the time is below.

  


  2022/05/29 19:13:19 INF [RTSP] [conn 127.0.0.1:62780] opened
2022/05/29 19:13:19 INF [RTSP] [session 734209460] created by 127.0.0.1:62780
2022/05/29 19:13:19 INF [RTSP] [session 734209460] is reading from path 'mystream', 1 track with UDP
2022/05/29 19:13:29 INF [RTSP] [session 734209460] destroyed (teared down by 127.0.0.1:62780)
2022/05/29 19:13:29 INF [RTSP] [conn 127.0.0.1:62780] closed (EOF)
2022/05/29 19:13:29 INF [RTSP] [conn 127.0.0.1:62781] opened
2022/05/29 19:13:29 INF [RTSP] [session 445756113] created by 127.0.0.1:62781
2022/05/29 19:13:29 INF [RTSP] [session 445756113] is reading from path 'mystream', 1 track with TCP


  


  However, I open the rtsp streaming from the VLC's "Network" tab like below,


  


  and configure the "Stream output" like below,


  


  and I tried to get this streaming from an HTML page like below,

  


  &#xA;&#xA;  &#xA;    &#xA;    &#xA;  &#xA;  &#xA;    <h1>transcode test</h1>&#xA;    <audio src="http://localhost:9999/mystream" autoplay="autoplay"></audio>&#xA;  &#xA;&#xA;

  


  the browser console displays Failed to load resource: the server responded with a status of 404 (Not found). I've already tried other ports(etc. 8080).

  


  So, how can I get the rtsp stream from the RTSP server on an HTML page.
Any idea ?

  


  My environment.

  


  

  • Browser : Microsoft edge

  


  • OS : MacOS 11.6.5

  


  • rtsp-simple-server : 0.18.4

  


  • FFmpeg : 5.0.1

  


  • VLC : 3.0.17.3

  


  


• `ffmpet -f concat` don't work when all input streams appear to have the same spec

  9 mars 2023, par Roy

  My ffmpeg command :

  


  ffmpeg -safe 0 -f concat -i list.txt -c copy out.mp4


  


  My 1st input file :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Applications\ffmpeg_6.0_full\a.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf60.3.100
  Duration: 00:00:04.97, start: 0.000000, bitrate: 40 kb/s
  Stream #0:0[0x1](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 2 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 27 kb/s, 30 fps, 30 tbr, 30k tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : Lavc60.3.100 libx264


  


  My 2nd input file :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Applications\ffmpeg_6.0_full\b.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp41isom
    creation_time   : 2023-03-08T06:47:13.000000Z
    artist          : Microsoft Game DVR
    title           : PUBG: BATTLEGROUNDS
  Duration: 00:10:00.16, start: 0.000000, bitrate: 20885 kb/s
  Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 20739 kb/s, 30 fps, 30 tbr, 30k tbn (default)
    Metadata:
      creation_time   : 2023-03-08T06:47:13.000000Z
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
      encoder         : AVC Coding
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 131 kb/s (default)
    Metadata:
      creation_time   : 2023-03-08T06:47:13.000000Z
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]


  


  The above command outputs some warning signals :

  


  [mov,mp4,m4a,3gp,3g2,mj2 @ 0000025239902d40] Auto-inserting h264_mp4toannexb bitstream filter
[mp4 @ 00000252396fe5c0] Non-monotonous DTS in output stream 0:1; previous: 218112, current: 150024; changing to 218113. This may result in incorrect timestamps in the output file.
...
a lot of them
...
frame=25992 fps=21754 q=-1.0 Lsize= 1519621kB time=00:14:49.39 bitrate=13996.8kbits/s speed= 744x
video:9649kB audio:1519216kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown


  


  The resultant video can play the first part of the video correctly, then the video players either skips directly to the end of the video (MPC-HC), or don't render anything at all while timer passes as normal (VLC).

  


  My impression of the concat is that it requires all videos to have the same spec, which I think my input achieved (all the "Steam #0:0", etc, line matches). I only see the following difference, which I assumed that should be okay :

  


  

  1. Metadata are different both for the whole input (e.g. "major_brand") and for each stream (e.g. "encoder"). I assumed that metadata won't affect the processing.

  


  2. The order of video/audio streams are different in the two inputs : the 1st input file has audio then video ; the 2nd input file has video then audio. I assumed that ffmpeg knows the difference and won't concat a video stream to an audio stream.

  


  


  The full output of the command can be found in this pastebin : https://pastebin.com/Z5q97Uyg