Don't use ffmpeg with mp4 to work with variable FPS stuff. libavformat 56. None. E.g. Ok, that's odd, but it works. Metadata: Chapter #0:19: start 3717.964000, end 4033.696000 ger or deu - German 40.101 / 56. Metadata: Stream #0:4(spa): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s 0.100 Splitting the commandline. Apparently the -ac option considers all the streams from the output file and not just the audio ones. Metadata: Chapter #0:2: start 746.287000, end 778.527000 Metadata: Chapter #0:15: start 3156.319000, end 3233.188000 configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib Stream #0:9(fre): Subtitle: hdmv_pgs_subtitle, 1920x1080 But wait, you’ll say, all these commands and copying the batch file makes my head spin, I want something easier. Stream #0:20(fre): Subtitle: hdmv_pgs_subtitle, 1920x1080, ffmpeg -probesize 5G -analyzeduration 5G -i "sample.mkv" -map 0:0 -map 0:1 -map 0:2 -map 0:1 -map 0:2 -c:v copy -c:a:0 copy -c:a:1 copy -c:a:2 ac3 -ac 6 -ab 448k -ar 48000 -c:a:3 aac -ac 2 -ab 192k -ar 48000 -scodec copy -strict experimental -f mp4 -movflags faststart "result.m4v". sub_charenc_parameters.txt 9/1/2015. Stream #0:0(eng): Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 23.98 fps, 23.98 tbr, 16k tbn, 1k tbc (default) C:\ffmpeg\bin\ffmpeg.exe -i %1 -map 0 -vcodec copy -scodec copy -acodec ac3 -b:a 640k “%~d1%~p1%~n1”-AC3.mkv. Many Philips Blu-Ray Players, Samsung Smart TV's and other standalone players can only read "SRT" subtitle streams in "MKV" files. I have actually encoded an audio file from ac3 to aac using ffmpeg native aac encoder but the issue is that the file is not playing correctly , more specifically i have played that file in different media player but most of them start from 19 seconds and in vlc it is not even starting till I … Chapter #0:0: start 0.000000, end 312.395000 59.100 / 56. are copied to a new .mkv file unaltered except the audio track, which is converted to AC3. Metadata: Chapter #0:22: start 4349.887000, end 4611.523000 Convert to MP3, MP4, AAC, FLAC, AC3, WAV, etc. Metadata: Chapter #0:12: start 2457.580000, end 2634.506000 Set input text subtitles character encoding conversion. Now the only thing that isn't working properly (or maybe it is) is that the DTS Master track that's the first one that is copied shows in the original .mkv as 8 channels for the channels property and in the remixed output it's showing as 2 channels and original = 8 instead of showing as 8 channels. To coerce ffmpeg to search further for the subtitle stream, use options: which will cause ffmpeg to search until the first of those limits is reached. Even when I specify -channels 7, the eac3 encoder encodes to a maximum of 6 channels. in Metadata: Chapter #0:24: start 4805.926000, end 4936.307000 The optional FFmpeg library allows Audacity to import and export a much larger range of audio formats including M4A (AAC), AC3, AMR (narrow band) and WMA and also to import audio from most video files.. Because of software patents, Audacity cannot include the FFmpeg software or distribute it from its own websites. Metadata: Chapter #0:7: start 1543.625000, end 1632.255000 Subtitles may come either from a separate text file (typically with a .srt extension) or from a dedicated stream within the video file. The bit rate I use for AC3 is 640kb/s (the maximum for AC3). Given that I'm explicit about the mappings now I would have expected the AC3 track to be 6 channel converted from the DTS-MA track and the aac track to be 2 channel converted from the DTS-MA track. Reading option '-xerror' ... matched as option 'xerror' (exit on … D:\test-remapping>ffmpeg -i "MelleParadis_PART1_CONSTANTE.mov" -c copy -c:a ac3 -map 0 mlle5.1.mov the console replies "NOT ENOUGH SPACE" and stop... of course there's still some space in my hard drive... How could I map all the 6 mono streams into 5.1 ? Then simply copy this batch file to a folder with one or more .mkv files that you need the audio converted and run it (double-click). There is a version for older Audacity software and a version for the newest one that I used. Visit the Trac open source project athttp://trac.edgewall.org/, Options -ac, -ar and -sample_fmt do not behave as documented / use another stream_specifier than -codec, https://ffmpeg.org/ffmpeg-all.html#Audio-Options, https://ffmpeg.org/ffmpeg-all.html#Main-options. 40.101 46.100 libswscale 4. Visit the Trac open source project athttp://trac.edgewall.org/, E-AC-3 encoder does not support more than 6 channels encoding. It's like instead of doing a copy it's modifying them too. Metadata: Stream #0:6(hun): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s 31.100 / 54. Post was not sent - check your email addresses! Metadata: Stream #0:0 -> #0:0 (copy) Metadata: Chapter #0:8: start 1632.255000, end 2070.109000 You left the details about the generated output file out in comment 2. Metadata: Stream #0:7(pol): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s I'm not sure if this is intended, so I'll keep this open until someone else can confirm. The ac3_fixed encoder is not the default codec for any of the output formats, so it must be specified explicitly using the option -acodec ac3_fixed in order to use it. Metadata: Chapter #0:10: start 2307.722000, end 2386.967000 By Edgewall Software. https://ffmpeg.org/ffmpeg-all.html#Audio-Options mentions the same stream_specifier for -ac as https://ffmpeg.org/ffmpeg-all.html#Main-options for -codec but the following does not work as documented: The following - unexpectedly - does produce stereo output: Powered by Trac 1.0.9 If I use MKV instead of m4v, the resulting file shows all 8 channels though. (But then shows channel positions for all 8 channels). There is definitely a bug, it is just unknown whether the bug is in the documentation or the code: Here are some notes from an internal app of mine that should assist in translating the various Dolby terminology into ffmpeg terminology: Joshua Tidsbury
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