Recherche avancée

Sur d’autres sites (5660)

• How do I run a shell script through a "for" or "foreach" loop in order to batch convert ?

  28 mars 2013, par jerdiggity

  Assuming I had a bunch of videos sitting inside the directory /home/user/videos/awaiting_conversion how would I go about using cron to run a script similar to this one to batch convert each video into a different format ?

  /bin/sh -c $'nice /usr/bin/ffmpeg -i \044'\'$'/home/user/videos/awaiting_conversion/video_file_1.mp4'\'$' -s \044'\'$'480x320'\'$' -vcodec libx264 -acodec libmp3lame -ab \044'\'$'64k'\'$' -vpre fast -crf \044'\'$'30'\'$' -ar \044'\'$'22050'\'$' -f flv -y \044'\'$'/home/user/videos/converted/video_file_1.flv'\'$''

  The above script works fine for a single conversion, but :

  1. It assumes that the name of the video is static/known (which will not be the case when batch converting).
  2. It assumes that there is only one video to convert (which may or may not be the case), i.e. there's no "loop".
  3. It leaves the original file in place instead of deleting it (which is what I would want to happen to prevent duplicate conversions).

  The ultimate question would be how do I run that script for each video that exists inside /home/user/videos/awaiting_conversion, passing the file name as a variable ?

• FFMPEG "no such file or directory" on Android

  25 mars 2013, par Feras

  I am trying to use the ffmpeg binary and call it via a native linux command in android. Most of the commands work fine but the problem is that when i need to pass an http url as an input to the -i option i get "No such file or directory" for the url. The url however is existing and running the SAME command on a mac does the job as expected.

  Here is my compile config for the ffmpeg build :

  ./configure \
  
  $DEBUG_FLAG \
  
  --arch=arm \
  
  --cpu=cortex-a8 \
  
  --target-os=linux \
  
  --enable-runtime-cpudetect \
  
  --prefix=$prefix \
  
  --enable-pic \
  
  --disable-shared \
  
  --enable-static \
  
  --cross-prefix=$NDK_TOOLCHAIN_BASE/bin/$NDK_ABI-linux-androideabi- \
  
  --sysroot="$NDK_SYSROOT" \
  
  --extra-cflags="-I../x264 -mfloat-abi=softfp -mfpu=neon" \
  
  --extra-ldflags="-L../x264" \
  
  \
  
  --enable-version3 \
  
  --enable-gpl \
  
  \
  
  --disable-doc \
  
  --enable-yasm \
  
  \
  
  --enable-decoders \
  
  --enable-nonfree \
  
  --enable-encoders \
  
  --enable-muxers \
  
  --enable-demuxers \
  
  --enable-parsers \
  
  --enable-protocols \
  
  --enable-protocol=http \
  
  --enable-filters \
  
  --enable-avresample \
  
  \
  
  --disable-indevs \
  
  --enable-indev=lavfi \
  
  \
  
  --enable-hwaccels \
  
  \
  
  --enable-ffmpeg \
  
  --enable-ffplay \
  
  --enable-libmp3lame \
  
  --enable-network \
  
  \
  
  --enable-libx264 \
  
  --enable-libfaac \
  
  --enable-zlib

  Its based off of this project : https://github.com/guardianproject/android-ffmpeg-java

  Command is something along the lines of that :

  ffmpeg -i "http://someurl" -f mp3 -ab 192000 -vn demoo.mp3

  The idea being to download the audio track from a video and encode it as mp3. I explicitly added multiple enable protocols options but nothing seems to do the job. I tried an alternative config as well, removing everything below enable-gpl just to make sure there arent any conflicts, but it fires the same error. If i give it a normal filesystem path it works fine.

  Following the comments here is the exact output of the command and the output :

  03-25 00:22:08.806: VERBOSE/FFMPEG(16491): /data/data/org.ffmpeg.android/app_bin/ffmpeg -i "http://r6---sn-gvbxgn-tt1d.c.youtube.com/videoplayback?ipbits=8&cp=U0hVSVJLV19KUUNONV9KRUFJOnQ0STMtb0JXc0py&sparams=cp%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&id=c0045acebe0c3341&upn=IVAGxSD1hE0&source=youtube&ratebypass=yes&mv=m&key=yt1&expire=1364209857&itag=18&ms=au&ip=99.234.119.90&mt=1364185033&fexp=923418%2C901802%2C906383%2C902000%2C919512%2C913605%2C931202%2C900821%2C900823%2C931203%2C931401%2C908529%2C919373%2C930803%2C920201%2C929602%2C930101%2C930603%2C926403%2C900824%2C910223&sver=3&newshard=yes&signature=838AEB4650D8353B70DBC49341E0C40706DC6153.297639FD70A7F9710F29AE9E278A4FC4A32E0C67" -f mp3 -ab 192000 -vn /data/data/org.ffmpeg.android/files/demoooo.mp3 -loglevel debug
  
  03-25 00:22:08.956: DEBUG/ffmpeg(16491): Process exited with code:1
  
  03-25 00:22:08.966: DEBUG/ffmpeg(16491): Shell output:ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  
  03-25 00:22:08.976: DEBUG/ffmpeg(16491): Shell output:  built on Mar 24 2013 02:24:38 with gcc 4.6 20120106 (prerelease)
  
  03-25 00:22:08.976: DEBUG/ffmpeg(16491): Shell output:  configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/Users/feribg/Dev/android-ndk-r8d/toolchains/arm-linux-androideabi-4.6/prebuilt/darwin-x86/bin/arm-linux-androideabi- --sysroot=/Users/feribg/Dev/android-ndk-r8d/platforms/android-3/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon' --extra-ldflags=-L../x264 --enable-version3 --enable-gpl
  
  03-25 00:22:08.976: DEBUG/ffmpeg(16491): Shell output:  libavutil      51. 54.100 / 51. 54.100
  
  03-25 00:22:08.976: DEBUG/ffmpeg(16491): Shell output:  libavcodec     54. 23.100 / 54. 23.100
  
  03-25 00:22:08.976: DEBUG/ffmpeg(16491): Shell output:  libavformat    54.  6.100 / 54.  6.100
  
  03-25 00:22:08.986: DEBUG/ffmpeg(16491): Shell output:  libavdevice    54.  0.100 / 54.  0.100
  
  03-25 00:22:08.996: DEBUG/ffmpeg(16491): Shell output:  libavfilter     2. 77.100 /  2. 77.100
  
  03-25 00:22:08.996: DEBUG/ffmpeg(16491): Shell output:  libswscale      2.  1.100 /  2.  1.100
  
  03-25 00:22:08.996: DEBUG/ffmpeg(16491): Shell output:  libswresample   0. 15.100 /  0. 15.100
  
  03-25 00:22:08.996: DEBUG/ffmpeg(16491): Shell output:  libpostproc    52.  0.100 / 52.  0.100
  
  03-25 00:22:08.996: DEBUG/ffmpeg(16491): Shell output:"http://r6---sn-gvbxgn-tt1d.c.youtube.com/videoplayback?ipbits=8&cp=U0hVSVJLV19KUUNONV9KRUFJOnQ0STMtb0JXc0py&sparams=cp%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&id=c0045acebe0c3341&upn=IVAGxSD1hE0&source=youtube&ratebypass=yes&mv=m&key=yt1&expire=1364209857&itag=18&ms=au&ip=99.234.119.90&mt=1364185033&fexp=923418%2C901802%2C906383%2C902000%2C919512%2C913605%2C931202%2C900821%2C900823%2C931203%2C931401%2C908529%2C919373%2C930803%2C920201%2C929602%2C930101%2C930603%2C926403%2C900824%2C910223&sver=3&newshard=yes&signature=838AEB4650D8353B70DBC49341E0C40706DC6153.297639FD70A7F9710F29AE9E278A4FC4A32E0C67": No such file or directory

• How to make -vf "movie=..." point to another folder in FFmpeg [migrated]

  21 mars 2013, par evilheinz

  I'm trying to watermark a video with another video placed in a different folder.

  Source video [video.mov] is placed in a folder like

  x:\test1\

  Overlay video [overlay.mov] is placed in

  x:\test2\

  I'm using this command :

  ffmpeg.exe -y -i x:\test1\video.mov -vf "movie=x:\test2\overlay.mov [watermark]; [in][watermark] overlay=0:0 [out]" x:\test3\video_overlay.mov

  But I'm getting an error saying

  Missing key or no key/value separator found after key 'test2overlay.mov'

  When placing all files in the same folder and using this :

  ffmpeg.exe -y -i video.mov -vf "movie=overlay.mov [watermark]; [in][watermark] overlay=0:0 [out]" video_overlay.mov

  everything works fine.

  So how do I get the video filter to load the overlay file from a different folder on Windows ?