Recherche avancée

Sur d’autres sites (5340)

• ffmpeg, video Conversion

  7 novembre 2012, par user1805414

  I have 2 video.
  Metadata files :

  Seems stream 0 codec frame rate differs from container frame rate: 2000.00 (2000/1) -> 30.00 (30/1)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '89.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 0
  
      compatible_brands: mp41isom
  
      creation_time   : 2012-10-23 08:10:51
  
    Duration: 00:00:08.96, start: 0.000000, bitrate: 2017 kb/s
  
      Stream #0.0(eng): Video: h264 (Baseline), yuv420p, 640x480, 2006 kb/s, 28.53 fps, 30 tbr, 1k tbn, 2k tbc
  
      Metadata:
  
        creation_time   : 2012-10-23 08:10:51
  
      Stream #0.1(eng): Audio: aac, 48000 Hz, stereo, s16, 48 kb/s
  
      Metadata:
  
        creation_time   : 2012-10-23 08:10:51
  
  At least one output file must be specified.
  
  //--------------------------------------------------------------------------------------------------------------//
  
  Seems stream 1 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 90000.00 (180000/2)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '56_1.mp4':
  
    Metadata:
  
      major_brand     : 3gp4
  
      minor_version   : 0
  
      compatible_brands: isom3gp4
  
      creation_time   : 1946-11-02 07:14:31
  
    Duration: 00:00:05.23, start: 0.000000, bitrate: 239 kb/s
  
      Stream #0.0(eng): Audio: amrnb, 8000 Hz, 1 channels, flt, 5 kb/s
  
      Metadata:
  
        creation_time   : 1946-11-02 07:14:31
  
      Stream #0.1(eng): Video: h264 (Baseline), yuv420p, 480x320, 240 kb/s, PAR 65536:65536 DAR 3:2, 17.63 fps, 90k tbr, 90k tbn, 180k tbc
  
      Metadata:
  
        creation_time   : 1946-11-02 07:14:31
  
  At least one output file must be specified.

  They do not play on my website.
  How to bring them to a form ?

  Seems stream 0 codec frame rate differs from container frame rate: 47.95 (5994/125) -> 23.98 (24000/1001)
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'oceans-clip.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 1
  
      compatible_brands: isomavc1
  
      creation_time   : 2010-05-18 04:24:00
  
    Duration: 00:00:46.54, start: 0.000000, bitrate: 3342 kb/s
  
      Stream #0.0(und): Video: h264 (Constrained Baseline), yuv420p, 640x264 [PAR 132:133 DAR 320:133], 3195 kb/s, PAR 127:128 DAR 635:264, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc
  
      Metadata:
  
        creation_time   : 2010-05-18 04:24:00
  
      Stream #0.1(und): Audio: aac, 44100 Hz, stereo, s16, 144 kb/s
  
      Metadata:
  
        creation_time   : 2010-05-18 04:24:01
  
  At least one output file must be specified

  I get the video to android and vinfone devices, and must play it on your site, but the player does not want to play. Metadata files that I get see the beginnings. The latter belongs to the metadata file that correctly reproduced on the site.

• accurate cutting of video (+ audio) with ffmpeg [migrated]

  4 novembre 2012, par Pete Oakey

  I want my website to allow users to accurately create their own clips from a source video I provide.

  I have a source video file that I first want to convert to something suitable for a website :

  Input #0, matroska,webm, from 'source.mkv': 
  
  Duration: 00:28:18.57, start: 0.000000, bitrate: 10183 kb/s 
  
  Stream #0:0: Video: h264 (Constrained Baseline), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 48 tbc (default)
  
  Stream #0:1: Audio: mp3, 44100 Hz, stereo, s16, 128 kb/s (default)

  So I use ffmpeg to convert it like so :

  ffmpeg -i source.mkv -c:v libx264 -c:a aac -strict experimental -vf scale="960:-1" source.mp4

  Watching this video back it is good enough quality and small enough file size for my needs, and loads/plays on my website.

  So I have a webpage that lets users select a start and endpoint on this video - and create a clip. Here's an example of the ffmpeg command that I use for that :

  -ss 577.920 -i source.mp4 -t 011.980 -codec:v copy -codec:a copy -vf scale="960:-1" clip1.mp4

  The problem is the clip is not always time-accurate enough. Usually the audio is accurate enough but the video stops half a second early or something.

  Is there any way to make this accurate and in-sync to say, 0.2 of a second ?

  EDIT :
  Adding -force_key_frames 00:00:00.2 didn't help.

• FFMPEG streaming all Images instead of last

  8 juin 2015, par Sid411

  I am taking a snapshot of the screen and saving the image to hard disk.
  After saving the image I stream the image using FFMPEG to another machine. I replace the same image in the disk as I want to stream the latest image.
  However when I stream the image, the other machine plays all the previous images too.
  Can someone please tell me why this happens even though I delete my previous image.

  The FFMPEG command that I am using is

  ffmpeg -re -loop 1 -r 15 -vcodec mjpeg -i /home/image.jpg http://localhost:8072/feed1.ffm

  Also, the streaming stops after a certain time.

  Can some one guide me on these two issues ?

  Thank you.