Recherche avancée

Sur d’autres sites (6692)

• how to reencode with ffmpeg (with limited x264)

  26 mai 2012, par sarfraz

  Until now I used this script to reencode my rips for my box (tv decoder) :

  ^_^ ( ~ ) -> cat ~/++/src/convert.sh 
  
  #! /bin/bash
  
  
  
  name=$(path -r "$1") # it gives the file name without the extension
  
  
  
  [ "$1" = *.mp4 ] && ffmpeg -i "$name".mp4 -vcodec copy -acodec copy "$name".mkv
  
  x264 --preset veryfast --tune animation --crf 18 --vf resize:720,576,16:15 -o "$name".tmp.mkv "$name".mkv
  
  mkvmerge -o "$name [freeplayer sd]".mkv "$name".tmp.mkv --no-video "$1"
  
  rm -rf "$name".tmp.mkv
  
  [ "$1" = *.mp4 ] && rm -rf "$name".mkv
  
  exit 0
  
  
  
  #EOF

  It works on my ubuntu and archlinux laptops. But it doesn’t on my desktop witch runs fedora.
  Google says that the x264 package shiped by rpmfusion doesn,t support lavf and ffms2.
  And I cannot unistall it because smplayer (witch i like) needs it.

  Ok, so I have to compile it. Google then says "you have to build ffmpeg, ffms2 tnen x264 ensuring that the flags are correctly refered." Well, didn’t work (ffms2 cannot find LIBAV - even when I am telling where - and x264 does’t configure with lavf...)

  My question is : can I use ffmpeg alone to do what my script does.
  I have ffmpeg version 0.8.11, x264 0.116.2048 59cb2eb and gcc : 4.6.1 20110804 (Red Hat 4.6.1-7)

  Any hint wound be appreciated.

  EDIT : Ok, I found that : ffmpeg -i input file -acodec copy -vcodec libx264 -preset veryfast -tune animation [that part I don’t have] output

  PS : english is not my native, plz forgive any spelling fault.

• How to get convert a avi to mp4 video in order to get a YouTube 1080p HD video ? [closed]

  26 mai 2012, par Swiss12000

  I have an avi video (31568 kbits/s ->video) (1411 kbits/s -> audio).
  The avi video is 7sec long and the size is 24 597KO.

  I'm trying to convert the avi video with ffmpeg to get a lighter mp4 version.

  In the command line, I've entered :

  ffmpeg -i test.avi test.mp4

  However, when I upload the video on YouTube, I can get a 720p quality maximum.

  My question is : how to convert a mp4 in order to get a 1 080p video ?

  Thank you

  edit : Am I missing something in my question. I get negative opinion, if so what can i do in order to improve my question. I'm totaly new in videos encoding. I also did lot of google reasearch about it but i find no specific answer about that issue... So I feel that my question isn't that much bad... :s

• Can't find preset files

  1er juin 2012, par Bilthon

  this is a ffmpeg issue. I've got this error saying it could not find the hq preset file, then I read in the documentation that it looks for the preset files at 'PREFIX/share/ffmpeg' and also at '$HOME/.ffmpeg'. The thing is I'm calling ffmpeg from whithin a php file that calls a python script that finally executes the command something like 'commands.getstatusoutput(command)' so I was not sure who the user was.

  The solution ? I just used -fpre and my call now looks like this :

  /usr/local/bin/ffmpeg -i ../files/tmpvideos/myStream.flv -y -acodec libfaac -ab 96k -b 800k -maxrate 800k -minrate 600k -bufsize 800k -s 720x640 -vcodec libx264 -g 300 -r 20 -fpre /home/admin/.ffmpeg/libx264-hq.ffpreset -threads 0 ../files/tmpvideos/4647-60.mp4

  I created that directory under /home/admin and am 100% sure that there the file is there now, but still ffmpeg says :

  File for preset '/home/admin/.ffmpeg/libx264-hq.ffpreset' not found

  So I'm not sure why is it not working since I'm specifying the complete path now. Any ideas ?

  One reason that I'm thinking of, is that it maybe was not compiled correctly, like with all the flags and stuff. What I mean is that while some outputs out there looked like this :

  FFmpeg version SVN-r22976, Copyright (c) 2000-2010 the FFmpeg developers
  
    built on Apr 30 2010 12:03:12 with gcc 4.2.1-sjlj (mingw32-2)
  
    configuration: --enable-shared --enable-static --enable-memalign-hack
  
  --enable
  
  -libmp3lame --enable-libx264 --enable-gpl
  
    libavutil     50.14. 0 / 50.14. 0
  
    libavcodec    52.66. 0 / 52.66. 0
  
    libavformat   52.61. 0 / 52.61. 0
  
    libavdevice   52. 2. 0 / 52. 2. 0
  
    libswscale     0.10. 0 /  0.10. 0

  mine looks more like this :

  Output: FFmpeg version 0.6.1, Copyright (c) 2000-2010 the FFmpeg developers
  
    built on Nov 12 2010 16:32:38 with gcc 4.1.2 20080704 (Red Hat 4.1.2-48)
  
    configuration:
  
    libavutil     50.15. 1 / 50.15. 1
  
    libavcodec    52.72. 2 / 52.72. 2
  
    libavformat   52.64. 2 / 52.64. 2
  
    libavdevice   52. 2. 0 / 52. 2. 0
  
    libswscale     0.11. 0 /  0.11. 0

  No configuration stuff. What do u think ? could be that this ffmpeg was not compiled correctly so it will never find the presets ? I didn't compile it, so can't be sure.

  Thanks and sorry for the verbosity of the question.

  Nelson