#321: Ffmpeg fails to detect format of piped input on some mp3 files --------------------------+-------------------------- Reporter: gwg | Type: defect Status: new | Priority: normal Component: undetermined | Version: unspecified Keywords: | Blocked By: Blocking: | Reproduced: 0 Analyzed: 0 | --------------------------+-------------------------- I am trying to decode an mp3 to raw wav data over a pipe. Ffmpeg reported being unable to detect the format of the input file, and did not transcode it (there was no output to the output file).
Here is the command: > cat badmp3file.mp3 | ffmpeg -v 10 -i - output.wav And ffmpeg said: >FFmpeg version SVN-r0.5.1-4:0.5.1-1ubuntu1.1, Copyright (c) 2000-2009 Fabrice Bellard, et al. > configuration: --extra-version=4:0.5.1-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable- libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable- stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static > libavutil 49.15. 0 / 49.15. 0 > libavcodec 52.20. 1 / 52.20. 1 > libavformat 52.31. 0 / 52.31. 0 > libavdevice 52. 1. 0 / 52. 1. 0 > libavfilter 0. 4. 0 / 0. 4. 0 > libswscale 0. 7. 1 / 0. 7. 1 > libpostproc 51. 2. 0 / 51. 2. 0 > built on Mar 31 2011 18:59:37, gcc: 4.4.3 >pipe:: Unknown format However, with the following command, ffmepg is successful: > ffmpeg -v 9 -i badmp3file.mp3 outfile.wav I will submit badmp3file.mp3 to the ftp server in the folder "gwg". Thank you for your work! Garth -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/321> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker _______________________________________________ FFmpeg-trac mailing list [email protected] http://avcodec.org/mailman/listinfo/ffmpeg-trac
