#1579: fix remuxing of imaadpcm in wav -------------------------------------+------------------------------------- Reporter: ami_stuff | Owner: Type: defect | Status: new Priority: normal | Component: Version: | undetermined unspecified | Keywords: Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 -------------------------------------+------------------------------------- ms codec can't decode remuxed file because frame_size is set to 0 with "-acodec copy" http://samples.mplayerhq.hu/A-codecs/ima-adpcm/test_ima_adpcm.wav libavformat/riff.c: {{{ } else if (enc->codec_id == CODEC_ID_GSM_MS || enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) { hdrsize += 2; bytestream_put_le16(&riff_extradata, frame_size); /* wSamplesPerBlock */ + av_log(enc, AV_LOG_WARNING, "frame_size: %d\n", frame_size); }}} {{{ C:\>ffmpeg -i test_ima_adpcm.wav -acodec copy out.wav ffmpeg version N-42891-g9054f6b Copyright (c) 2000-2012 the FFmpeg developers built on Jul 26 2012 02:25:40 with gcc 4.5.0 (GCC) 20100414 (Fedora MinGW 4.5. 0-1.fc14) configuration: --prefix=/var/www/users/research/ffmpeg/snapshots/build --arch= x86 --target-os=mingw32 --cross-prefix=i686-pc-mingw32- --cc='ccache i686 -pc-min gw32-gcc' --enable-w32threads --enable-memalign-hack --enable-runtime- cpudetect --enable-cross-compile --enable-static --disable-shared --extra- libs='-lws2_32 - lwinmm -lpthread' --extra-cflags='--static -I/var/www/users/research/ffmpeg/snap shots/build/include' --extra-ldflags='-static -L/var/www/users/research/ffmpeg/s napshots/build/lib' --enable-bzlib --enable-zlib --enable-gpl --enable- version3 --enable-nonfree --enable-libx264 --enable-libspeex --enable-libtheora --enable- libvorbis --enable-libfaac --enable-libxvid --enable-libopencore-amrnb --enable- libopencore-amrwb --enable-libmp3lame --enable-libvpx --disable- decoder=libvpx libavutil 51. 65.100 / 51. 65.100 libavcodec 54. 44.101 / 54. 44.101 libavformat 54. 20.100 / 54. 20.100 libavdevice 54. 2.100 / 54. 2.100 libavfilter 3. 3.100 / 3. 3.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 Guessed Channel Layout for Input Stream #0.0 : mono Input #0, wav, from 'test_ima_adpcm.wav': Duration: 00:00:06.28, bitrate: 32 kb/s Stream #0:0: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s 16, 32 kb/s Output #0, wav, to 'out.wav': Metadata: encoder : Lavf54.20.100 Stream #0:0: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, 3 2 kb/s Stream mapping: Stream #0:0 -> #0:0 (copy) Press [q] to stop, [?] for help size= 25kB time=00:00:06.31 bitrate= 32.5kbits/s video:0kB audio:25kB subtitle:0 global headers:0kB muxing overhead 0.234375% }}} -- Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/1579> FFmpeg <http://ffmpeg.org> FFmpeg issue tracker