Ffmpeg used to be able to read Flash format files (flash containers) and extract video and audio streams for example to a .mp4 format files. Last time this worked for me was Feb 21, 2016.
Ffmpeg got updated to 3.0 version Feb 28th. First it complained about some library mismatches. After reinstalling it on Mar 12th (version 3.0-62.1-x86_64) it does not give any library errors any more.
This is an example of taking mp3 stream from flash container to plain mp3 file. This used to work until Feb 21 for me:
$ **ffmpeg -f flv -i './file.flv' -map 0:0 -acodec copy -map_metadata 0 './file.mp3'**
ffmpeg version 3.0 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (SUSE Linux)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --incdir=/usr/include/ffmpeg --extra-cflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g' --optflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g' --disable-htmlpages --enable-pic --disable-stripping --enable-shared --disable-static --enable-runtime-cpudetect --enable-gpl --disable-openssl --enable-avresample --enable-libcdio --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcelt --enable-libcdio --enable-libdc1394 --enable-libfreetype --enable-libgsm --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-pic --enable-pthreads --enable-vaapi --enable-vdpau --disable-encoders --disable-decoders --disable-muxers --disable-demuxers --enable-encoder=',012v,ansi,apng,bmp,flac,exr,ffv1,ffvhuff,gif,huffyuv,jpegls,libopenjpeg,libtheora,libvpx,pam,pbm,pcx,pgm,png,pgmyuv,ppm,sgi,sunrast,targa,tiff,v210,v308,v408,v410,webp,xbm,xwd,y41p,yuv4,celt,flac,ilbc,opus,pcm_alaw,pcm_bluray,pcm_dvd,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_mulaw,pcm_s16be,pcm_s16be_planer,pcm_s16le,pcm_s16le_planar,pcm_s24be,pcm_s24le,pcm_s24le_planar,pcm_s32be,pcm_s32le,pcm_s32le_planar,pcm_s8,pcm_s8_planar,pcm_u16be,pcm_u16le,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,pcm_u8,speex,libvorbis' --enable-decoder=',012v,ansi,apng,bmp,flac,exr,ffv1,ffvhuff,gif,huffyuv,jpegls,libopenjpeg,libtheora,libvpx,pam,pbm,pcx,pgm,png,pgmyuv,ppm,sgi,sunrast,targa,tiff,v210,v308,v408,v410,webp,xbm,xwd,y41p,yuv4,celt,flac,ilbc,opus,pcm_alaw,pcm_bluray,pcm_dvd,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_mulaw,pcm_s16be,pcm_s16be_planer,pcm_s16le,pcm_s16le_planar,pcm_s24be,pcm_s24le,pcm_s24le_planar,pcm_s32be,pcm_s32le,pcm_s32le_planar,pcm_s8,pcm_s8_planar,pcm_u16be,pcm_u16le,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,pcm_u8,speex,ljpeg,v210x,vorbis,vp3,vp5,vp6,vp6a,vp6f,vp8,vp9,otf,ttf,ass,srt,ssa,text' --enable-muxer='flac,gif,image2,image2pipe,matroska,matroska_audio,null,webm' --enable-demuxer='flac,gif,image2,image2pipe,matroska' --enable-x11grab
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
Unknown input format: 'flv'
$
Information about codecs and formats:
$ **ffmpeg -codecs | grep -i flash**
ffmpeg version 3.0 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (SUSE Linux)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --incdir=/usr/include/ffmpeg --extra-cflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g' --optflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g' --disable-htmlpages --enable-pic --disable-stripping --enable-shared --disable-static --enable-runtime-cpudetect --enable-gpl --disable-openssl --enable-avresample --enable-libcdio --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcelt --enable-libcdio --enable-libdc1394 --enable-libfreetype --enable-libgsm --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-pic --enable-pthreads --enable-vaapi --enable-vdpau --disable-encoders --disable-decoders --disable-muxers --disable-demuxers --enable-encoder=',012v,ansi,apng,bmp,flac,exr,ffv1,ffvhuff,gif,huffyuv,jpegls,libopenjpeg,libtheora,libvpx,pam,pbm,pcx,pgm,png,pgmyuv,ppm,sgi,sunrast,targa,tiff,v210,v308,v408,v410,webp,xbm,xwd,y41p,yuv4,celt,flac,ilbc,opus,pcm_alaw,pcm_bluray,pcm_dvd,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_mulaw,pcm_s16be,pcm_s16be_planer,pcm_s16le,pcm_s16le_planar,pcm_s24be,pcm_s24le,pcm_s24le_planar,pcm_s32be,pcm_s32le,pcm_s32le_planar,pcm_s8,pcm_s8_planar,pcm_u16be,pcm_u16le,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,pcm_u8,speex,libvorbis' --enable-decoder=',012v,ansi,apng,bmp,flac,exr,ffv1,ffvhuff,gif,huffyuv,jpegls,libopenjpeg,libtheora,libvpx,pam,pbm,pcx,pgm,png,pgmyuv,ppm,sgi,sunrast,targa,tiff,v210,v308,v408,v410,webp,xbm,xwd,y41p,yuv4,celt,flac,ilbc,opus,pcm_alaw,pcm_bluray,pcm_dvd,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_mulaw,pcm_s16be,pcm_s16be_planer,pcm_s16le,pcm_s16le_planar,pcm_s24be,pcm_s24le,pcm_s24le_planar,pcm_s32be,pcm_s32le,pcm_s32le_planar,pcm_s8,pcm_s8_planar,pcm_u16be,pcm_u16le,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,pcm_u8,speex,ljpeg,v210x,vorbis,vp3,vp5,vp6,vp6a,vp6f,vp8,vp9,otf,ttf,ass,srt,ssa,text' --enable-muxer='flac,gif,image2,image2pipe,matroska,matroska_audio,null,webm' --enable-demuxer='flac,gif,image2,image2pipe,matroska' --enable-x11grab
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
..V..S flashsv Flash Screen Video v1
..V.L. flashsv2 Flash Screen Video v2
..V.L. flv1 FLV / Sorenson Spark / Sorenson H.263 (Flash Video)
..VIL. ptx V.Flash PTX image
D.V.L. vp6a On2 VP6 (Flash version, with alpha channel)
D.V.L. vp6f On2 VP6 (Flash version)
..A.L. adpcm_swf ADPCM Shockwave Flash
$ **ffmpeg -formats | grep -i fl**
ffmpeg version 3.0 Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 4.8 (SUSE Linux)
configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --incdir=/usr/include/ffmpeg --extra-cflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g' --optflags='-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector -funwind-tables -fasynchronous-unwind-tables -g' --disable-htmlpages --enable-pic --disable-stripping --enable-shared --disable-static --enable-runtime-cpudetect --enable-gpl --disable-openssl --enable-avresample --enable-libcdio --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libcelt --enable-libcdio --enable-libdc1394 --enable-libfreetype --enable-libgsm --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-pic --enable-pthreads --enable-vaapi --enable-vdpau --disable-encoders --disable-decoders --disable-muxers --disable-demuxers --enable-encoder=',012v,ansi,apng,bmp,flac,exr,ffv1,ffvhuff,gif,huffyuv,jpegls,libopenjpeg,libtheora,libvpx,pam,pbm,pcx,pgm,png,pgmyuv,ppm,sgi,sunrast,targa,tiff,v210,v308,v408,v410,webp,xbm,xwd,y41p,yuv4,celt,flac,ilbc,opus,pcm_alaw,pcm_bluray,pcm_dvd,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_mulaw,pcm_s16be,pcm_s16be_planer,pcm_s16le,pcm_s16le_planar,pcm_s24be,pcm_s24le,pcm_s24le_planar,pcm_s32be,pcm_s32le,pcm_s32le_planar,pcm_s8,pcm_s8_planar,pcm_u16be,pcm_u16le,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,pcm_u8,speex,libvorbis' --enable-decoder=',012v,ansi,apng,bmp,flac,exr,ffv1,ffvhuff,gif,huffyuv,jpegls,libopenjpeg,libtheora,libvpx,pam,pbm,pcx,pgm,png,pgmyuv,ppm,sgi,sunrast,targa,tiff,v210,v308,v408,v410,webp,xbm,xwd,y41p,yuv4,celt,flac,ilbc,opus,pcm_alaw,pcm_bluray,pcm_dvd,pcm_f32be,pcm_f32le,pcm_f64be,pcm_f64le,pcm_mulaw,pcm_s16be,pcm_s16be_planer,pcm_s16le,pcm_s16le_planar,pcm_s24be,pcm_s24le,pcm_s24le_planar,pcm_s32be,pcm_s32le,pcm_s32le_planar,pcm_s8,pcm_s8_planar,pcm_u16be,pcm_u16le,pcm_u24be,pcm_u24le,pcm_u32be,pcm_u32le,pcm_u8,speex,ljpeg,v210x,vorbis,vp3,vp5,vp6,vp6a,vp6f,vp8,vp9,otf,ttf,ass,srt,ssa,text' --enable-muxer='flac,gif,image2,image2pipe,matroska,matroska_audio,null,webm' --enable-demuxer='flac,gif,image2,image2pipe,matroska' --enable-x11grab
libavutil 55. 17.103 / 55. 17.103
libavcodec 57. 24.102 / 57. 24.102
libavformat 57. 25.100 / 57. 25.100
libavdevice 57. 0.101 / 57. 0.101
libavfilter 6. 31.100 / 6. 31.100
libavresample 3. 0. 0 / 3. 0. 0
libswscale 4. 0.100 / 4. 0.100
libswresample 2. 0.101 / 2. 0.101
libpostproc 54. 0.100 / 54. 0.100
DE flac raw FLAC
$
Has the flash container support been dropped intentionally or has it just been forgotten to compile in?