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• 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.

• FFMPEG "Could not allocate memory" Errors through php

  10 décembre 2019, par Applepiee

  I’ve tried to find a solution online for days now but cannot find any solution.

  I just switched server (Intel Xeon to AMD) and since the switch I’ve not been able to get ffmpeg conversions working through the php script. ffmpeg was the exact same version and all php settings are set.

  All commands that the script executes (copied from log files) were tried in shell and executed with no problems.

  The errors look like this :

  [124] =>       handler_name    : Video Media Handler
  
      [125] =>     Stream #8:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
  
      [126] =>     Metadata:
  
      [127] =>       handler_name    : Sound Media Handler
  
      [128] => Stream mapping:
  
      [129] =>   Stream #0:0 (h264) -> concat:in0:v0
  
      [130] =>   Stream #1:0 (h264) -> concat:in1:v0
  
      [131] =>   Stream #2:0 (h264) -> concat:in2:v0
  
      [132] =>   Stream #3:0 (h264) -> concat:in3:v0
  
      [133] =>   Stream #4:0 (h264) -> concat:in4:v0
  
      [134] =>   Stream #5:0 (h264) -> concat:in5:v0
  
      [135] =>   Stream #6:0 (h264) -> concat:in6:v0
  
      [136] =>   Stream #7:0 (h264) -> concat:in7:v0
  
      [137] =>   scale -> Stream #0:0 (libvpx)
  
      [138] => Press [q] to stop, [?] for help
  
      [139] => [h264 @ 0x34f1dc0] get_buffer() failed
  
      [140] => [h264 @ 0x34f1dc0] thread_get_buffer() failed
  
      [141] => [h264 @ 0x34f1dc0] decode_slice_header error
  
      [142] => [h264 @ 0x34f1dc0] no frame!
  
      [143] => [h264 @ 0x350e680] Error splitting the input into NAL units.
  
      [144] => [h264 @ 0x352af40] Cannot allocate memory.
  
      [145] => [h264 @ 0x352af40] Could not allocate memory
  
      [146] => [h264 @ 0x352af40] h264_slice_header_init() failedError while decoding stream #0:0: Cannot allocate memory
  
      [147] => [h264 @ 0x352af40] Cannot allocate memory.
  
      [148] => [h264 @ 0x352af40] Could not allocate memory
  
      [149] => [h264 @ 0x352af40] h264_slice_header_init() failedError while decoding stream #0:0: Cannot allocate memory
  
      [150] => [h264 @ 0x352af40] Cannot allocate memory.
  
      [151] => [h264 @ 0x352af40] Could not allocate memory
  
      [152] => [h264 @ 0x352af40] h264_slice_header_init() failedError while decoding stream #0:0: Cannot allocate memory
  
      [153] => [h264 @ 0x352af40] Cannot allocate memory.
  
      [154] => [h264 @ 0x352af40] Could not allocate memory
  
      [155] => [h264 @ 0x352af40] h264_slice_header_init() failedError while decoding stream #0:0: Cannot allocate memory
  
      [156] => [h264 @ 0x352af40] Cannot allocate memory.
  
      [157] => [h264 @ 0x352af40] Could not allocate memory
  
  ...
  
  ..
  
    [211519] => [h264 @ 0x886a3c0] h264_slice_header_init() failedToo many errors when draining, this is a bug. Stop draining and force EOF.
  
      [211520] => Error while decoding stream #7:0: Internal bug, should not have happened
  
      [211521] => Cannot allocate memory.
  
      [211522] => sws: initFilter failed
  
      [211523] => [Parsed_scale_1 @ 0x8e0be40] Failed to configure output pad on Parsed_scale_1
  
      [211524] => Error reinitializing filters!
  
      [211525] => Error while filtering: Operation not permitted
  
      [211526] => Finishing stream 0:0 without any data written to it.
  
      [211527] => [libvpx @ 0x6f4c600] v1.8.1-301-g89375f031
  
      [211528] => Output #0, webm, to '/home/website/public_html/media/videos/tmb/2420/video_copy.webm':
  
      [211529] =>   Metadata:
  
      [211530] =>     major_brand     : isom
  
      [211531] =>     minor_version   : 512
  
      [211532] =>     compatible_brands: isomiso2avc1mp41
  
      [211533] =>     title           : Aibeya The Animation
  
      [211534] =>     encoder         : Lavf58.35.100
  
      [211535] =>     Chapter #0:0: start 0.000000, end 102.102000
  
      [211536] =>     Metadata:
  
      [211537] =>       title           : Intro
  
      [211538] =>     Chapter #0:1: start 102.102000, end 110.369000
  
      [211539] =>     Metadata:
  
      [211540] =>       title           : Title
  
      [211541] =>     Chapter #0:2: start 110.369000, end 312.179000
  
      [211542] =>     Metadata:
  
      [211543] =>       title           : Part 1
  
      [211544] =>     Chapter #0:3: start 312.179000, end 548.415000
  
      [211545] =>     Metadata:
  
      [211546] =>       title           : Part 2
  
      [211547] =>     Chapter #0:4: start 548.415000, end 706.831000
  
      [211548] =>     Metadata:
  
      [211549] =>       title           : Part 3
  
      [211550] =>     Chapter #0:5: start 706.831000, end 1011.052000
  
      [211551] =>     Metadata:
  
      [211552] =>       title           : Part 4
  
      [211553] =>     Chapter #0:6: start 1011.052000, end 1198.823000
  
      [211554] =>     Metadata:
  
      [211555] =>       title           : Part 5
  
      [211556] =>     Chapter #0:7: start 1198.823000, end 1501.408000
  
      [211557] =>     Metadata:
  
      [211558] =>       title           : Part 6
  
      [211559] =>     Chapter #0:8: start 1501.408000, end 1579.945000
  
      [211560] =>     Metadata:
  
      [211561] =>       title           : Part 7
  
      [211562] =>     Chapter #0:9: start 1579.945000, end 1654.293000
  
      [211563] =>     Metadata:
  
      [211564] =>       title           : Ending
  
      [211565] =>     Stream #0:0: Video: vp8 (libvpx), yuv420p, 400x240 [SAR 837:785 DAR 279:157], q=10-42, 250 kb/s, 23.98 fps, 1k tbn, 23.98 tbc (default)
  
      [211566] =>     Metadata:
  
      [211567] =>       encoder         : Lavc58.64.101 libvpx
  
      [211568] =>     Side data:
  
      [211569] =>       cpb: bitrate max/min/avg: 0/0/0 buffer size: 600000 vbv_delay: N/A
  
      [211570] => frame=    0 fps=0.0 q=0.0 Lsize=       1kB time=00:00:00.00 bitrate=N/A speed=   0x
  
      [211571] => video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
      [211572] => Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
  
      [211573] => Conversion failed!
  
  )

  Command example used :

  ffmpeg_command is /usr/local/bin/ffmpeg -ss 100 -t 1 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 197 -t 2 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 294 -t 3 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 391 -t 3 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 488 -t 3 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 585 -t 3 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 682 -t 3 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 779 -t 3 -i /home/website/public_html/media/videos/iphone/2407.mp4 -ss 876 -t 3 -i /home/website/public_html/media/videos/iphone/2407.mp4 -filter_complex "[0][1][2][3][4][5][6][7]concat=n=8:v=1:a=0",scale=400:240 -codec:v libx264 -unsharp -b:v 250k -maxrate 250k -bufsize 600k -qmin 10 -qmax 42 -threads 4 -an -y /home/website/public_html/media/videos/tmb/2407/video_copy.mp4

  PHP Info :
  PHP 5.6
  memory_limit 2001M
  max_execution_time 7200
  upload_max_filesize 2000M
  post_max_size 2000M
  max_input_time 7200
  exec is not disabled

  Server info
  CentOS Linux 7 (Core)
  ADVANCE-4 - AMD Epyc 7351P - 128GB DDR4 ECC 2400MHz - 2x HDD SATA 4TB Datacenter Class + 2x SSD NVMe 500GB Enterprise Class Soft RAID

  All help is really appreciated ! Thanks in advance

• How to remove hoax subtitles from mp4 files by ffmpeg ?

  22 février 2020, par hamidi

  Sometimes I get some mp4 files which include a stream of type data. When I play such files by vlc I see an additional subtitle which is not really a subtitle stream. For example it just includes "Chapter 03" ! Indeed the original mp4 file should include a video and an audio stream, while ffmpeg shows an additional data stream. This is the same stream vlc shows as an additional subtitle stream. Sometimes the file includes four streams, a video, an audio and a real subtitle stream. I don’t want to use -sn to remove this real subtitle. I just want to remove what to claim to be a subtitle stream and it’s not. They’re usually introduced to be a data stream, but vlc shows them as subtitle stream. I also don’t want to use -dn or -map_metadata -1 to remove data from mp4, because sometimes the mp4 includes chapters data which I don’t want to be removed. I just want to remove these hoax subtitles which are introduced as data.

  How it’s possible to be done by ffmpeg ?