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• I wanted to create video streaming website, but the problem that I want to hard sub

  21 mai 2019, par hamad alafifi

  I want to hardsub all the movies and add watermark to them, I used ffmpeg once bu it’s slow, if you can recommend new way or how to use it faster.

• Fatal signal 11 (SIGSEGV) at 0x00000010 (code=1) while running android ffmpeg comand

  10 février 2015, par Dinesh Raj

  There is no problem while running this code for first time,after opening the app.

  String path=Environment.getExternalStorageDirectory().toString();                                           
  
  final String[]  complexCommand = {"-y","-r", "1/5" , "-i",path+"/slideshow/img%d.jpg","-acodec", "copy stream" ,path+"/Movies/vid.mp4"};

  log while running the ffmpeg command first time in android.

  02-11 18:32:06.289: D/Videokit(13426): Opening an output file: /storage/sdcard0/Movies/2015_02_11_18_32_06.mp4.
  
  02-11 18:32:06.299: D/Videokit(13426): Successfully opened the file.
  
  02-11 18:32:06.389: I/Videokit(13426): Stream mapping:
  
  02-11 18:32:06.389: I/Videokit(13426):   Stream #0:0 -> #0:0
  
  02-11 18:32:06.389: I/Videokit(13426):  (mjpeg -> mpeg4)
  
  02-11 18:32:06.389: I/Videokit(13426): Press [q] to stop, [?] for help
  
  02-11 18:32:06.419: V/Videokit(13426): No more output streams to write to, finishing.
  
  02-11 18:32:06.419: I/Videokit(13426): frame=    1 fps=0.0 q=2.8 Lsize=       7kB time=00:00:02.00 bitrate=  30.5kbits/s    
  
  02-11 18:32:06.429: I/Videokit(13426): video:7kB audio:0kB subtitle:0 data:0 global headers:0kB muxing overhead 11.628588%
  
  02-11 18:32:06.429: D/Videokit(13426): 1 frames successfully decoded, 0 decoding errors
  
  02-11 18:32:06.429: I/Videokit(13426): Main ended with status 0

  But without closing the app , if i run this ffmpeg command second time getting this error, after opening an output file

  Opening an output file: /storage/sdcard0/Movies/2015_02_11_18_35_29.mp4.
  
  Fatal signal 11 (SIGSEGV) at 0x00000000 (code=1), thread 13741 (v.env.slideshow)

• ffmpeg skips frames/packets while playing a file over http

  24 janvier 2020, par coban

  Microsoft Windows [Version 10.0.18362.592]  
  
  libavutil      56. 31.100 / 56. 31.100
  
  libavcodec     58. 54.100 / 58. 54.100
  
  libavformat    58. 29.100 / 58. 29.100
  
  libavdevice    58.  8.100 / 58.  8.100
  
  libavfilter     7. 57.100 /  7. 57.100
  
  libswscale      5.  5.100 /  5.  5.100
  
  libswresample   3.  5.100 /  3.  5.100
  
  libpostproc    55.  5.100 / 55.  5.100
  
  [hls @ 0600cac0] Skip ('#EXT-X-VERSION:3')    0KB sq=    0B f=0/0
  
  [hls @ 0600cac0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/chunklist_w1481451763.m3u8' for reading
  
  [hls @ 0600cac0] Skip ('#EXT-X-VERSION:3')    0KB sq=    0B f=0/0
  
  [hls @ 0600cac0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_0.ts' for reading
  
  [hls @ 0600cac0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_1.ts' for reading
  
  Input #0, hls, from 'http://ok2.se:8000/movie/xxxxxxxxxx/67933.m3u8':
  
  Duration: 02:02:22.46, start: 0.000000, bitrate: N/A
  
  Program 0
  
  Metadata: 0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0
  
    variant_bitrate : 2788912
  
  Stream #0:0: Data: timed_id3 (ID3  / 0x20334449)
  
  Metadata:
  
    variant_bitrate : 2788912
  
  Stream #0:1: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 720x304 [SAR 1:1 DAR 45:19], 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
  
  Metadata:
  
    variant_bitrate : 2788912
  
  Stream #0:2: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp
  
  Metadata:
  
    variant_bitrate : 2788912
  
  [http @ 060662c0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_2.ts' for reading
  
  [hls @ 0600cac0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_2.ts' for reading
  
  [http @ 0606fb40] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_3.ts' for reading
  
  [hls @ 0600cac0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_3.ts' for reading
  
  [http @ 0c2442c0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_4.ts' for reading
  
  [http @ 0606f8c0] Opening 'http://198.144.145.236:1935/ondemand-1/_definst_/mp4:path2/FRENCH.MOVIES/2017.JOHN.WICK.CHAPTER.2.FRN.mp4/media_w1481451763_5.ts' for reading

  I am trying to create an A/V player using ffmpeg library and Delphi. After puzzling and puzzling I found out how to read/decode/sync/display etc...

  I think this behaviour is in some specific situations, because I tested live streams and noticed no problems. In this case this is a video file, while playing my app and ffplay.exe (from ffmpeg not compiled by myself) behaving the same, and skipping packets "every time when the app has to wait while packetqueue is full ?" and loses about 10-30 seconds of audio and video.

  VLC doesn’t seem to have such a like behaviour, while as I understand from VLC credits, they are using ffmpeg or ffmpeg methods imported for decoding/encoding. inspecting vlc source doesn’t make much sense for me because I am a (noob) Delphi programmer. It’s like my main language is Dutch and try to translate form French to German language.

  Please any suggestions how to avoid this, because I think it has to do something with delivery of data from the server and/or read buffer of ffmpeg. If I increase the max size of packetqueue the skipping does happen later and if decrease the size, the skipping happens sooner.

  Including code from my app is not necessary because ffplay.exe has exact the same behavior. You can see debug from ffplay.exe.