Recherche avancée

Sur d’autres sites (4633)

• Split HEVC video into pieces of less than 1 second

  28 septembre 2019, par Vadim

  I am trying to split 3-second HEVC video 240fps into 5 parts less than 1 second.

  Video info

  Format                      : HEVC
  
  Format/Info                 : High Efficiency Video Coding
  
  Format profile              : Main@L6@Main
  
  Codec ID                    : hvc1
  
  Codec ID/Info               : High Efficiency Video Coding
  
  Duration                    : 2 s 861 ms
  
  Bit rate                    : 84.8 Mb/s
  
  Width                       : 1 920 pixels
  
  Height                      : 1 080 pixels
  
  Display aspect ratio        : 16:9
  
  Frame rate mode             : Constant
  
  Frame rate                  : 239.760 (240000/1001) FPS
  
  Color space                 : YUV
  
  Chroma subsampling          : 4:2:0
  
  Bit depth                   : 8 bits
  
  Bits/(Pixel*Frame)          : 0.170
  
  Stream size                 : 28.9 MiB (100%)
  
  Title                       : GoPro H.265
  
  Language                    : English
  
  Encoded date                : UTC 2016-05-14 03:54:07
  
  Tagged date                 : UTC 2016-05-14 03:54:07
  
  Color range                 : Full
  
  Color primaries             : BT.709
  
  Transfer characteristics    : BT.709
  
  Matrix coefficients         : BT.709
  
  Codec configuration box     : hvcC

  FFMPEG command :

  ffmpeg -y -i output240.mp4 -c copy -segment_time 0.6 -f segment  output%0d.mp4

  But it cuts into 3 parts 1 second long each

  With h264 there is no such problem.
  If i`ll reincode h265 to h265 with parameter -x264-params keyint=1:scenecut=0

  .//ffmpeg -i testVideo.mp4 -c:v libx264 -x264-params keyint=1:scenecut=0 -c:a copy output.mp4

  It is all ok.

  Is there any option to split without encoding ?

• Centos7 Server, Masrer Playlist can't create CODECS when use ffmpeg with libx265 (h.265)

  8 juillet 2020, par Duy Đức Nguyễn Phạm

  I use ffmpeg to stream from a link, when I use libx264 it run very good but when I use libx265, file master playlist can't create CODECS

  


  #ffmpeg

ffmpeg version N-98423-g584f396 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-39)
  configuration: --prefix=/./usr/local/ffmpeg --bindir=/./usr/local/bin/ --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --extra-libs=-lpthread --extra-libs=-lm --bindir=/root/bin --enable-gpl --enable-libfdk_aac --enable-libfreetype --enable-libopus --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  libavutil      56. 55.100 / 56. 55.100
  libavcodec     58. 94.100 / 58. 94.100
  libavformat    58. 48.100 / 58. 48.100
  libavdevice    58. 11.101 / 58. 11.101
  libavfilter     7. 86.100 /  7. 86.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100


  


  I check output video by command

  


  #ffprobe -v error -select_streams v:0 -show_entries stream=codec_name   -of default=noprint_wrappers=1:nokey=1 v0_s.m3u8


  


  Then the screen show

  


  hevc
hevc


  


  And this is master playlist comparison example when I use x265 (v0) and x264 (v1)

  


  #EXTM3U
#EXT-X-VERSION:7
#EXT-X-STREAM-INF:BANDWIDTH=401500,RESOLUTION=640x480
v0/prog_index.m3u8

#EXT-X-STREAM-INF:BANDWIDTH=2200000,RESOLUTION=1280x720,CODECS="avc1.42c01f"
v1/prog_index.m3u8


  


  Sorry about my English.
Can you help me ? Thank you !

  


• ffmpeg : Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_pad_5

  26 mars 2019, par rsswtmr

  This shouldn’t be that hard. I’m trying to combine three disparate video sources. I’m upscaling them to a consistent 1280x720 frame, with black backgrounds for letterboxing, and trying to concatenate to the output file. The two input files are show segments, and the bumper is a random commercial that goes in the middle.

  On an iMac Pro, System 10.14.3, ffmpeg 4.1.1. The command I’m trying to make work is :

  ffmpeg -y -hide_banner -i "input1.mkv" -i "bumper.mkv" -i "input2.mkv" -filter_complex '[0:v]scale=1280x720:force_original_aspect_ratio=increase[v0],pad=1280x720:max(0\,(ow-iw)/2):max(0\,(oh-ih)/2):black[v0]; [1:v]scale=1280x720:force_original_aspect_ratio=increase[v1],pad=1280x720:max(0\,(ow-iw)/2):max(0\,(oh-ih)/2):black[v1]; [2:v]scale=1280x720:force_original_aspect_ratio=increase[v2],pad=1280x720:max(0\,(ow-iw)/2):max(0\,(oh-ih)/2):black[v2]; [v0][0:a][v1][1:a][v2][2:a]concat=n=3:v=1:a=1 [outv] [outa]' -map "[outv]" -map "[outa]" 'output.mkv'

  The resulting frame I get back is :

  [h264 @ 0x7fbec9000600] [verbose] Reinit context to 720x480, pix_fmt: yuv420p
  
  [info] Input #0, matroska,webm, from 'input1.mkv':
  
  [info]   Metadata:
  
  [info]     encoder         : libebml v0.7.7 + libmatroska v0.8.1
  
  [info]     creation_time   : 2009-07-20T01:33:54.000000Z
  
  [info]   Duration: 00:12:00.89, start: 0.000000, bitrate: 1323 kb/s
  
  [info]     Stream #0:0(eng): Video: h264 (High), 1 reference frame, yuv420p(progressive, left), 708x480 (720x480) [SAR 10:11 DAR 59:44], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
  
  [info]     Stream #0:1(eng): Audio: ac3, 48000 Hz, stereo, fltp, 160 kb/s (default)
  
  [info]     Metadata:
  
  [info]       title           : English AC3
  
  [info]     Stream #0:2(eng): Subtitle: subrip
  
  [h264 @ 0x7fbec9019a00] [verbose] Reinit context to 304x240, pix_fmt: yuv420p
  
  [info] Input #1, matroska,webm, from 'bumper.mkv':
  
  [info]   Metadata:
  
  [info]     CREATION_TIME   : 2019-03-15T15:16:00Z
  
  [info]     ENCODER         : Lavf57.7.2
  
  [info]   Duration: 00:00:18.18, start: 0.000000, bitrate: 274 kb/s
  
  [info]     Stream #1:0: Video: h264 (Main), 1 reference frame, yuv420p(tv, smpte170m/smpte170m/bt709, progressive, left), 302x232 (304x240) [SAR 1:1 DAR 151:116], 29.97 fps, 29.97 tbr, 1k tbn, 180k tbc (default)
  
  [info]     Stream #1:1: Audio: aac (LC), 44100 Hz, stereo, fltp, delay 2111 (default)
  
  [info]     Metadata:
  
  [info]       title           : Stereo
  
  [error] Truncating packet of size 3515 to 1529
  
  [h264 @ 0x7fbec9014600] [verbose] Reinit context to 704x480, pix_fmt: yuv420p
  
  [h264 @ 0x7fbec9014600] [info] concealing 769 DC, 769 AC, 769 MV errors in I frame
  
  [matroska,webm @ 0x7fbec9011e00] [error] Read error at pos. 50829 (0xc68d)
  
  [info] Input #2, matroska,webm, from 'input2.mkv':
  
  [info]   Metadata:
  
  [info]     encoder         : libebml v0.7.7 + libmatroska v0.8.1
  
  [info]     creation_time   : 2009-07-19T22:37:48.000000Z
  
  [info]   Duration: 00:10:07.20, start: 0.000000, bitrate: 1391 kb/s
  
  [info]     Stream #2:0(eng): Video: h264 (High), 1 reference frame, yuv420p(progressive, left), 704x480 [SAR 10:11 DAR 4:3], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
  
  [info]     Stream #2:1(eng): Audio: ac3, 48000 Hz, stereo, fltp, 160 kb/s (default)
  
  [info]     Metadata:
  
  [info]       title           : English AC3
  
  [info]     Stream #2:2(eng): Subtitle: subrip
  
  [Parsed_scale_0 @ 0x7fbec8716540] [verbose] w:1280 h:720 flags:'bilinear' interl:0
  
  [Parsed_scale_2 @ 0x7fbec8702480] [verbose] w:1280 h:720 flags:'bilinear' interl:0
  
  [Parsed_scale_4 @ 0x7fbec8702e40] [verbose] w:1280 h:720 flags:'bilinear' interl:0
  
  [fatal] Cannot find a matching stream for unlabeled input pad 0 on filter Parsed_pad_5
  
  [AVIOContext @ 0x7fbec862bfc0] [verbose] Statistics: 104366 bytes read, 2 seeks
  
  [AVIOContext @ 0x7fbec870a100] [verbose] Statistics: 32768 bytes read, 0 seeks
  
  [AVIOContext @ 0x7fbec87135c0] [verbose] Statistics: 460284 bytes read, 2 seeks

  I have no idea what Parsed_pad_5 means. I Googled Cannot find a matching stream for unlabeled input pad and found absolutely no explanation, anywhere. I’m a relative ffmpeg newbie. Before I start rooting around in the source code, can anyone point me in the right direction ? Thanks in advance.