Hello, I am using FFMPEG to convert WAV files to FLAC files and I am getting MD5 mismatch errors when running the converted files through AudioTester. Now, it doesn't happen for all converted files, just some. Conversely, when I use the flac encoding tool to encode the files, they do not produce the md5 mismatch error. Does anyone have any insights on this? Here is the corresponding commands and output:
ffmpeg -i 10casualties-2-1422667268-1-1426282002-1-1427332463.wav -y flac_encoding_test.flac ffmpeg version N-44407-g8bc8001- http://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2015 the FFmpeg developers built with gcc 4.9.2 (Debian 4.9.2-10) configuration: --enable-gpl --enable-version3 --disable-shared --disable-debug --enable-runtime-cpudetect --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libwebp --enable-libspeex --enable-libvorbis --enable-libvpx --enable-libfreetype --enable-fontconfig --enable-libxvid --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-gray --enable-libopenjpeg --enable-libopus --enable-libass --enable-gnutls --enable-libvidstab --cc=gcc-4.9 libavutil 54. 18.100 / 54. 18.100 libavcodec 56. 22.100 / 56. 22.100 libavformat 56. 22.100 / 56. 22.100 libavdevice 56. 4.100 / 56. 4.100 libavfilter 5. 11.100 / 5. 11.100 libswscale 3. 1.101 / 3. 1.101 libswresample 1. 1.100 / 1. 1.100 libpostproc 53. 3.100 / 53. 3.100 Guessed Channel Layout for Input Stream #0.0 : stereo Input #0, wav, from '10casualties-2-1422667268-1-1426282002-1-1427332463.wav': Duration: 00:02:17.27, bitrate: 1411 kb/s Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, 2 channels, s16, 1411 kb/s Output #0, flac, to 'flac_encoding_test.flac': Metadata: encoder : Lavf56.22.100 Stream #0:0: Audio: flac, 44100 Hz, stereo, s16, 128 kb/s Metadata: encoder : Lavc56.22.100 flac Stream mapping: Stream #0:0 -> #0:0 (pcm_s16le (native) -> flac (native)) Press [q] to stop, [?] for help size= 17278kB time=00:02:17.26 bitrate=1031.1kbits/s video:0kB audio:17270kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.046867% ****CHECKING FILE WITH FLAC**** flac -t flac_encoding_test.flac flac 1.2.1, Copyright (C) 2000,2001,2002,2003,2004,2005,2006,2007 Josh Coalson flac comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under certain conditions. Type `flac' for details. flac_encoding_test.flac: ERROR, MD5 signature mismatch _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
