Newest 'ffmpeg' Questions - Stack Overflow

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• Install FFmpeg on OS X 10.8 [closed]

  22 octobre 2012, par Shuyinsama

  Is there a good place or bash script I can use (or at least a version I can build myself) for FFmpeg on OS X Mountain Lion (10.8)?

  I have Xcode installed as well as the CLI for Xcode (gcc etc).

  I have a version of FFmpeg currently installed, but somehow I get a segmentation error on libx264 as well as the libvpx (I can't convert to MP4 and WebM).

  All I want to do is batch convert video files to HTML5 compatible videos. All my source videos consist of .mov .mp4 and .wmv files. .ogv works fine by the way.

  So the real question:

  1. How to uninstall everything of FFmpeg on my Mac now
  2. Reinstall a FFmpeg version that can convert to .mp4, .webm, and .ogv

  I also tried the precompiled version of Miro video converter but somehow that doesn't work either.

• How to write incoming frames to file without touching in ffmpeg ?

  22 octobre 2012, par frankish

  I am able to read frames from av_open_input_file and decode and reencode it with another codec and save to file.

  Now, I want the same thing, except i don't want to decode or reencode. I want to do av_interleaved_write_frame on the just read frame to file. To do this, i need to set AVOutputFormat

  AVOutputFormat *fmt; fmt = av_guess_format(NULL, filename, NULL);

  However, i can not supply a filename, because it is a remote stream. So, is there any way to generate AVOutputFormat from the current AVFormatContext which already reads input frames? So i can write the same frame to the output file from any part of it (not necessarily from the beginning) in the correct way.

  To summarize: I need to write the just read frame to the file without decoding and reencoding. (I will open that file another time to be able to play that file)

  Any ideas?

• java.io.ioexception.Runtime.getRuntime().exec(). environment and working directory null error in android

  22 octobre 2012, par rams

  File dir = new File("/mnt/sdcard");
  Process process = Runtime.getRuntime().exec("ffmpeg -f image2 -i img%4d.png video.mp4", null, dir);
  

  when i try this line in android,i get environment and working directory null error in android. But when i try that line in java,it worked perfectly.but in android,it has some problem.

• x264 [error] : main profile doesn't support 4:4:4 [closed]

  22 octobre 2012, par Haja Mohaideen

  Possible Duplicate:
  Playing videos using HTML5 Tag

  I have an open question here, Playing videos using HTML5 Tag.

  I am getting the above mentioned error when I try the following:

  ffmpeg -y -i file.mov -s 320x240 -c:v libx264 -profile:v baseline -preset slow -acodec aac -strict experimental -ac 2 -r 15 -ab 44100 -aspect 16:9 OUTPUT_VIDEO.mp4
  

  Hope someone can help me. I am trying to output for android and iOS.

• AVI to FLV. Getting files with high quality ? [closed]

  22 octobre 2012, par Guttemberg

  Using FFMPEG, what would be the command line to the FLV skirt with the best possible quality?

  You can convert a. Avi to. Flv, and flv end out with higher quality than the original avi?

  I'm using FormatFactory, I used Boxoft avi to flv, quality and could not in the end result. Could recommend another program?

  I intend to provide the videos on a website, via streaming.