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• FFMPEG "-to" option won't stop encoding at the implied time

  11 janvier 2018, par Saber Karimi

  I’m using ffmpeg to cut and covert a part of a long video but when using the "-to" option ffmpeg keeps encoding till the end of the video and wont stop.

  Here’s my command :

  ffmpeg -ss 00:22:59 -i input.mkv -to 00:23:15.5 -c:v libx264 -c:a aac output.mp4

  if i change to "-t" and enter my desired duration, problem goes away. but since i have a very long video and many tasks i need to use "-to" which is easier for me.

  Thanks in advance.

• ffmpeg hangs when I run the command "ffmpeg -i udp ://... ". It freezes until i stop (ctrl+c)

  3 février 2016, par niranjan

  ffmpeg hangs when I run the command "ffmpeg -i udp ://... ". It freezes until i stop (ctrl+c). The same UDP was working till an hour ago. Can you please let me know what could be the issue.

  After running the command, it freezes and displays,

  *
  ffmpeg version N-74650-ga16251a Copyright (c) 2000-2015 the FFmpeg developers
  built with gcc 4.9.2 (Debian 4.9.2-10)
  configuration : —disable-yasm —enable-gpl —enable-libass —enable-libfdk-aac —enable-libfreetype —enable-libmp3lame —enable-libopus —enable-libtheora —enable-libvorbis —enable-libvpx —enable-libx264 —enable-nonfree
  libavutil 54. 31.100 / 54. 31.100
  libavcodec 56. 58.100 / 56. 58.100
  libavformat 56. 40.101 / 56. 40.101
  libavdevice 56. 4.100 / 56. 4.100
  libavfilter 5. 37.100 / 5. 37.100
  libswscale 3. 1.101 / 3. 1.101
  libswresample 1. 2.101 / 1. 2.101
  libpostproc 53. 3.100 / 53. 3.100
  *
  When I stop,

  [mpegts @ 0x25412c0] Could not find codec parameters for stream 0 (Video : h264 ([27][0][0][0] / 0x001B), none) : unspecified size
  Consider increasing the value for the ’analyzeduration’ and ’probesize’ options
  [mpegts @ 0x25412c0] Could not find codec parameters for stream 1 (Audio : mp3 ([3][0][0][0] / 0x0003), 0 channels, s16p) : unspecified frame size

  If there is no feed on the UDP, shouldn’t the timeout be working and error should be displayed ?

  Please help the noob here.

• "make : *** No rule to make target 'clean'. Stop." error when i want to Build ffmpeg with NDK

  26 avril 2015, par Hossein

  I want to Build ffmpeg with NDK in windows and i use this tutorial.
  i have created "build_android.sh" file into ffmpeg folder, an this is it’s code :

  #!/bin/bash
  
  
  
  NDK=C:/Users/HAKHASIN/Desktop/android-ndk-r10d
  
  
  
  SYSROOT=$NDK/platforms/android-8/arch-arm/
  
  
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/windows
  
  
  
  function build_one
  
  
  
  {
  
  
  
  C:/Users/HAKHASIN/Desktop/android-ndk-r10d/sources/ffmpeg-2.6.2/configure \
  
  
  
  --prefix=$PREFIX \
  
  
  
  --disable-shared \
  
  
  
  --enable-static \
  
  
  
  --disable-doc \
  
  
  
  --disable-ffmpeg \
  
  
  
  --disable-ffplay \
  
  
  
  --disable-ffprobe \
  
  
  
  --disable-ffserver \
  
  
  
  --disable-avdevice \
  
  
  
  --disable-doc \
  
  
  
  --disable-symver \
  
  
  
  --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi- \
  
  
  
  --target-os=linux \
  
  
  
  --arch=arm \
  
  
  
  --enable-cross-compile \
  
  
  
  --sysroot=$SYSROOT \
  
  
  
  --extra-cflags="-Os -fpic $ADDI_CFLAGS" \
  
  
  
  --extra-ldflags="$ADDI_LDFLAGS" \
  
  
  
  $ADDITIONAL_CONFIGURE_FLAG
  
  
  
  make clean
  
  
  
  make
  
  
  
  make install
  
  
  
  }
  
  
  
  CPU=arm
  
  
  
  PREFIX=$(pwd)/android/$CPU
  
  
  
  ADDI_CFLAGS="-marm"
  
  
  
  build_one

  when i write commands in cygwin, i have 3 errors :

  

  how can i fix these errors ? thanks