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• Change the framerate of a video including audio without re-encoding using ffmpeg

  12 août 2018, par Trojaner_

  I have a 30.02 FPS .mp4-video and I’m trying to convert it to 30 FPS. I found this question but if I try the method like described in the first answer the audio gets lost because the video is getting converted in a .h264-file which can’t contain audio as I read here.

  (I’m sorry if i’ve got issues with the english language, it isn’t my mother language)

  EDIT : Here goes the content I enter in the terminal and the output that returns

  Input : ffmpeg -y -i 01.mp4 -f h264 -c copy temp1.h264

  Output : (I replaced the real paths with path\to\...)

  ffmpeg version N-91589-ge0539f0349 Copyright (c) 2000-2018 the FFmpeg developers
  
  built with gcc 8.2.1 (GCC) 20180808
  
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  
  libavutil      56. 18.102 / 56. 18.102
  
  libavcodec     58. 22.101 / 58. 22.101
  
  libavformat    58. 17.101 / 58. 17.101
  
  libavdevice    58.  4.101 / 58.  4.101
  
  libavfilter     7. 26.100 /  7. 26.100
  
  libswscale      5.  2.100 /  5.  2.100
  
  libswresample   3.  2.100 /  3.  2.100
  
  libpostproc    55.  2.100 / 55.  2.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'path\to\01.mp4':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 512
  
  compatible_brands: isomiso2avc1mp41
  
  encoder         : Lavf58.17.101
  
  Duration: 00:02:42.01, start: 0.000000, bitrate: 5168 kb/s
  
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 5000 kb/s, 30.02 fps, 30 tbr, 16k tbn, 60 tbc (default)
  
  Metadata:
  
  handler_name    : VideoHandler
  
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 159 kb/s (default)
  
  Metadata:
  
  handler_name    : SoundHandler
  
  Output #0, h264, to 'path\to\temp1.h264':
  
  Metadata:
  
  major_brand     : isom
  
  minor_version   : 512
  
  compatible_brands: isomiso2avc1mp41
  
  encoder         : Lavf58.17.101
  
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, q=2-31, 5000 kb/s, 30.02 fps, 30 tbr, 30 tbn, 30 tbc (default)
  
  Metadata:
  
  handler_name    : VideoHandler
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  frame= 4862 fps=0.0 q=-1.0 Lsize=   98859kB time=00:02:42.00 bitrate=4999.1kbits/s speed= 351x
  
  video:98860kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  Input : ffmpeg -y -r 30 -i "temp1.h264" -c copy "temp1.mp4"

  Output : (I replaced the real paths with path\to\...)

  ffmpeg version N-91589-ge0539f0349 Copyright (c) 2000-2018 the FFmpeg developers
  
  built with gcc 8.2.1 (GCC) 20180808
  
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  
  libavutil      56. 18.102 / 56. 18.102
  
  libavcodec     58. 22.101 / 58. 22.101
  
  libavformat    58. 17.101 / 58. 17.101
  
  libavdevice    58.  4.101 / 58.  4.101
  
  libavfilter     7. 26.100 /  7. 26.100
  
  libswscale      5.  2.100 /  5.  2.100
  
  libswresample   3.  2.100 /  3.  2.100
  
  libpostproc    55.  2.100 / 55.  2.100
  
  Input #0, h264, from 'path\to\temp1.h264':
  
  Duration: N/A, bitrate: N/A
  
  Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x720, 30 fps, 30 tbr, 1200k tbn, 60 tbc
  
  Output #0, mp4, to 'path\to\temp1.mp4':
  
  Metadata:
  
  encoder         : Lavf58.17.101
  
  Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(progressive), 1280x720, q=2-31, 30 fps, 30 tbr, 15360 tbn, 30 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [mp4 @ 0000018e11422ec0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
  
  [mp4 @ 0000018e11422ec0] pts has no value
  
  Last message repeated 156 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:05.13 bitrate=5719.5kbits/s speed=10.2x
  
  Last message repeated 153 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:10.26 bitrate=4902.4kbits/s speed=10.2x
  
  Last message repeated 150 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:15.30 bitrate=4934.5kbits/s speed=10.2x
  
  Last message repeated 137 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:19.90 bitrate=4953.1kbits/s speed=9.91x
  
  Last message repeated 152 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:25.00 bitrate=4949.3kbits/s speed=9.97x
  
  Last message repeated 152 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:30.10 bitrate=4946.8kbits/s speed=  10x
  
  Last message repeated 152 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:35.20 bitrate=4945.0kbits/s speed=  10x
  
  Last message repeated 146 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:40.10 bitrate=4968.3kbits/s speed=9.99x
  
  Last message repeated 153 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:45.23 bitrate=4960.8kbits/s speed=  10x
  
  Last message repeated 147 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:50.16 bitrate=5016.4kbits/s speed=  10x
  
  Last message repeated 152 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:00:55.26 bitrate=4970.9kbits/s speed=  10x
  
  Last message repeated 151 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:00.33 bitrate=4970.6kbits/s speed=  10x
  
  Last message repeated 153 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:05.46 bitrate=4997.3kbits/s speed=  10x
  
  Last message repeated 149 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:10.46 bitrate=5029.6kbits/s speed=  10x
  
  Last message repeated 153 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:15.60 bitrate=5021.0kbits/s speed=  10x
  
  Last message repeated 151 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:20.66 bitrate=5017.6kbits/s speed=  10x
  
  Last message repeated 154 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:25.83 bitrate=4984.3kbits/s speed=10.1x
  
  Last message repeated 151 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:30.90 bitrate=4983.3kbits/s speed=10.1x
  
  Last message repeated 149 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:35.90 bitrate=4985.9kbits/s speed=10.1x
  
  Last message repeated 149 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:40.90 bitrate=4988.3kbits/s speed=  10x
  
  Last message repeated 151 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:45.96 bitrate=5007.0kbits/s speed=10.1x
  
  Last message repeated 150 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:51.00 bitrate=5006.7kbits/s speed=10.1x
  
  Last message repeated 150 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:01:56.03 bitrate=5006.4kbits/s speed=10.1x
  
  Last message repeated 147 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:00.96 bitrate=4992.9kbits/s speed=  10x
  
  Last message repeated 151 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:06.03 bitrate=4991.9kbits/s speed=  10x
  
  Last message repeated 149 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:11.03 bitrate=4993.5kbits/s speed=  10x
  
  Last message repeated 151 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:16.10 bitrate=4992.5kbits/s speed=  10x
  
  Last message repeated 153 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:21.23 bitrate=4989.2kbits/s speed=10.1x
  
  Last message repeated 152 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:26.33 bitrate=4987.3kbits/s speed=10.1x
  
  Last message repeated 149 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:31.33 bitrate=5016.5kbits/s speed=  10x
  
  Last message repeated 153 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:36.46 bitrate=5026.2kbits/s speed=10.1x
  
  Last message repeated 148 times
  
  [mp4 @ 0000018e11422ec0] pts has no valueB time=00:02:41.43 bitrate=4988.5kbits/s speed=  10x
  
  Last message repeated 15 times
  
  frame= 4862 fps=301 q=-1.0 Lsize=   98882kB time=00:02:41.96 bitrate=5001.3kbits/s speed=  10x
  
  video:98859kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.023950%

• restreaming with ffmpeg and ffserver

  13 mars 2014, par Dnaso

  I have been looking all over stack and the net and cannot find the answer (or one that works for me anyway). I have a cerevo liveshell pro which is a video encoder (pretty damn good too). In its RTSP server mode, I am able to watch audio and video on iphone and android. However, It can only hold 3 connections. I want to restream this stream NO encoding of any type on ffserver. Is this possible ? Everything I have tried so far does not open. If I disable my audio in the config file it works and if i disable video and just push audio it works, but both will not. Also I do not want to use ffmpeg if I do not have to because I am not re encoding the stream, since it is already encoded in the correct format, I just want to restream it !.

   ffmpeg -i rtsp://xxx  -vcodec copy -acodec copy http://lclhst:8090/feed1.ffm
  
  
  
  
  
  <stream>
  
     format rtp
  
     videoCodec libx264
  
     AudioCodec aac
  
      I also have global headers for audio and video.
  
  </stream>

  has anyone been able to fix or surpass the issue ?

• Using ffmpeg for stream encryption by srtp in windows

  11 avril 2015, par user3248865

  I have been trying to make encrypted stream via ffmpeg and I´ve found srtp support in this library (ffmpeg documentation). Unfortunately, it seems that encryption doesn´t work at all. I´m using the following command to send stream :

  ffmpeg -re -i "output.mpg" -vcodec libx264 -f flv "srtp://192.168.0.100:7777?srtp_out_suite=AES_CM_128_HMAC_SHA1_80&srtp_out_params=00108310518720928b30d38f41149351559761969b71d79f8218a39259a7"

  and this one for stream receiving :

  ffplay "srtp://192.168.0.100:7777?srtp_in_suite=AES_CM_128_HMAC_SHA1_80&srtp_in_params=00108310518720928b30d38f41149351559761969b71d79f8218a39259a7"

  They work good.
  But, If I change the command for ffplay to this one :

  ffplay udp://192.168.0.100:7777

  it works too and I can watch the video. So, it means that encryption for srtp doesn´t work ?

  1. Is the stream encryption by using ffmpeg possible (not only srtp) ?
  2. If so, What am I doing wrong ?

  Thanks in advance.

  An output from ffmpeg -re -i ... command is :

  Input #0, mpeg, from 'outpu.mpg':
  
  Duration: 00:03:20.01, start: 0.529089, bitrate: 475 kb/s
  
  Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p(tv), 352x288 [SAR 1:1 DAR 11:
  
  9], 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
  
  Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 64 kb/s
  
  [libx264 @ 023633e0] using SAR=1/1
  
  [libx264 @ 023633e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 023633e0] profile High, level 1.3
  
  [libx264 @ 023633e0] 264 - core 138 r2358 9e941d1 - H.264/MPEG-4 AVC codec - Cop
  
  yleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deb
  
  lock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 m
  
  e_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chro
  
  ma_qp_offset=-2 threads=6 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 i
  
  nterlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1
  
  b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenec
  
  ut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=
  
  0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, flv, to 'srtp://192.168.0.106:7777?srtp_out_suite=AES_CM_128_HMAC_SHA
  
  1_80&srtp_out_params=00108310518720928b30d38f41149351559761969b71d79f8218a39259a
  
  7':
  
    Metadata:
  
      encoder         : Lavf55.19.100
  
     Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 352x288
  
  [SAR 1:1 DAR 11:9], q=-1--1, 1k tbn, 25 tbc
  
     Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100 Hz, ster
  
     eo, s16p
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (mpeg1video -> libx264)
  
    Stream #0:1 -> #0:1 (mp2 -> libmp3lame)
  
  Press [q] to stop, [?] for help
  
  frame=   14 fps=0.0 q=0.0 size=       0kB time=00:00:00.13 bitrate=  23.2kbits/s
  
  frame=   27 fps= 27 q=0.0 size=       0kB time=00:00:00.65 bitrate=   4.7kbits/s
  
  frame=   40 fps= 26 q=0.0 size=       0kB time=00:00:01.15 bitrate=   2.7kbits/s
  
  frame=   52 fps= 26 q=28.0 size=       3kB time=00:00:01.67 bitrate=  16.8kbits/
  
  ...

  Edit :

  I have tried the above ffmpeg command with srtp_out_suite=NmcxMmQ2ZjVnYjEyNmRmMTV2czY1YWR2ZjFhc2Rm, but udp stream is still playing well.