Newest 'ffmpeg' Questions - Stack Overflow

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  • Use ffmpeg with python

    24 février 2014, par user2063350

    I have an ffmpeg setup on my pc, which streams mp3 with this code:

    ffmpeg -f dshow -i audio="Input device" -c:a libmp3lame -f mpegts udp://192.168.1.2:7777

    Also i have a server and I want to start recording stream to mp3 file whenever stream starts. Server is running all day long listening for pc to connect. How can I do this with python? I want to create unique file with time and date in filename in filename each time stream starts. Can I do this using udp protocol or what protocol do You suggest me to use? and what modules in python are helpful for this task?

    subprocess.call('ffmpeg -y -i udp://192.168.1.2:7777 -acodec copy output.mp3')

    P.S. Sorry for my bad English.

  • FFMPEG build for android on ubuntu

    23 février 2014, par james

    I am developing a media app which provides support for all video formats for implementing this feature we require FFMPEG the very best library for codecs. Compiling FFMPEG on windows for android is very long battle so I migrated to ubuntu I have almost compiled it shows the the binaries but it gives at last point following message

    >AR libpostproc/libpostproc.a
AR  libswresample/libswresample.a
AR  libswscale/libswscale.a
AR  libavcodec/libavcodec.a
AR  libavutil/libavutil.a
INSTALL libavfilter/libavfilter.a
INSTALL libavformat/libavformat.a
INSTALL libavresample/libavresample.a
INSTALL libpostproc/libpostproc.a
INSTALL libswresample/libswresample.a
INSTALL libswscale/libswscale.a
INSTALL libavutil/libavutil.a
LD  ffmpeg_g
INSTALL libavcodec/libavcodec.a
CP  ffmpeg
STRIP   ffmpeg
skipping strip ffmpeg
INSTALL install-progs-yes
INSTALL ffmpeg
/home/akshay/Desktop/android-ndk-r9c/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86/bin/arm-linux-androideabi-ld: -: unknown option

    Here is my script

    #!/bin/bash
NDK=/home/akshay/Desktop/android-ndk-r9c
PLATFORM=$NDK/platforms/android-8/arch-arm
PREBUILT=$NDK/toolchains/arm-linux-androideabi-4.8/prebuilt/linux-x86
PREFIX=./android-ffmpeg
function build_one
{
    ./configure --target-os=linux --prefix=$PREFIX \
    --enable-cross-compile \
    --enable-runtime-cpudetect \
    --disable-asm \
    --arch=arm \
    #--cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
    --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
    --disable-stripping \
    #--nm=$PREBUILT/bin/arm-linux-androideabi-nm \
    --sysroot=$PLATFORM \
    --enable-nonfree \
    --enable-version3 \
    --disable-everything \
    --enable-gpl \
    --disable-doc \
    --enable-avresample \
    --enable-demuxer=rtsp \
    --enable-muxer=rtsp \
    --disable-ffplay \
    --disable-ffserver \
    --enable-ffmpeg \
    --disable-ffprobe \
    --enable-encoders \
    --enable-decoders \
    --enable-protocols \
    --enable-hwaccels \
    --enable-zlib \
    --disable-devices \
    --disable-avdevice \
    --extra-cflags="-I/home/android-ffmpeg/include -fPIC -DANDROID -D__thumb__ -mthumb -Wfatal-errors -Wno-deprecated -mfloat-abi=softfp -mfpu=vfpv3-d16 -marm -march=armv7-a" \
    --extra-ldflags="-L/home/android-ffmpeg/lib"
    make -j4 install
    $PREBUILT/bin/arm-linux-androideabi-ar d libavcodec/libavcodec.a inverse.o
    $PREBUILT/bin/arm-linux-androideabi-ld -rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -L$PREFIX/lib  -soname libffmpeg.so -shared -  nostdlib  -z,noexecstack -Bsymbolic --whole-archive --no-undefined -o $PREFIX/libffmpeg.so libavcodec/libavcodec.a libavfilter/     libavfilter.a libavresample/libavresample.a libavformat/libavformat.a libavutil/libavutil.a libswscale/libswscale.a -lc -lm -lz -ldl -  llog --warn-once --dynamic-linker=/system/bin/linker $PREBUILT/lib/gcc/arm-linux-androideabi/4.8/libgcc.a
}
build_one

    Please tell me anything wrong in the script

  • ffmpeg and python usage

    23 février 2014, par user2063350

    I have an ffmpeg setup on my pc, which streams mp3 with this code:

    ffmpeg -f dshow -i audio="Input device" -c:a libmp3lame -f mpegts udp://192.168.1.2:7777

    Also i have a server and I want my python script to run 24/7 on server and start/stop writing stream to mp3 file every time pc get's turned on/off. I need new file every time pc turns on (use time and date for filename for example) to bypass overwriting. Using python's subprocess module and ffmpeg I can save file on my server like this:

    subprocess.call('ffmpeg -y -i udp://192.168.1.2:7777 -acodec copy output.mp3')

    But I need condition, when to start recording(listen if 7777 port is reciving data or something like that), is it even possible to implement such thing, using python? P.S. Sorry for my bad English.

  • Online video editing server for streaming content

    23 février 2014, par netCreate

    I'm looking for software that will enable me to make online video editing for streaming content. I do have background with FFmpeg (as video multiplying), MLT framework and Red5 as streaming server.

    Now what I need to do is to be able to stream online content and modify it - add layers and effects online.

    I know how to do this thing offline with Kdenlive or generate MLT scripts. I want to be able to to this online.

    What should I do to enable online editing?

  • Issues in integrating ffmpeg with omxil

    23 février 2014, par Mayank Agarwal

    I want to make media player based on OMX IL.I want to use ffmpeg as demuxer.Is there any sample code that shows how to integrate ffmpeg with omxil.Basically i want to give AVFormatContext packets as input to omxil decoder.

    Please point me to any docs/sample code.

    Regards, Mayank

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