This is a regression since ef8cc06d6e50d3da7b781e126a3bce7929b53a55 and that it is probably related to #6551.įfmpeg -i Rec1_0001.avi -c copy output.wav
#Ffmpeg extract audio from avi free#
TAudioConverter is free open source software.Export of audio from an AVI (attached) fails in current version (git-master), but previously worked. TAudioConverter can apply certain effects to audio. It can copy tags and cover art from source. More that one audio stream, you can select the one you want.Īudio Merger. With or without encoding the audio stream. It can also extract audio streams from video files. Processes depends on the CPU cores you have. This means that it will run severalĮncoders in parallel to shorten encoding time. Monkey's Audio, TAK, TTA, WavPack, AIFF and PCM. It can convert to MP3, AAC,ĪAC HE, AC3, MusePack, Ogg Vorbis, Opus, WMA, DTS, ALAC, FLAC, TAudioConverter support various encoders. It supports ripping/extracting audio from many different files.Īccording to the changelog it should support multichannel export as long as you don't choose mp3 and AAC-HEv2 as target. Take a look at the free and open source TAudioConverter. I have unfortunately not found a way to do this directly from the ac3 stream of an audio+video container. (Note that channel mapping, ie which is front, rear left and so on might depend on the original bitstream channel mapping). First extract the soundtrack as ac3 file, as shown previously, then : ffmpeg -i my_input_file.ac3 -map_channel 0.0.0 l.wav -map_channel 0.0.1 r.wav -map_channel 0.0.2 c.wav -map_channel 0.0.3 ls.wav -map_channel 0.0.4 rs.wav -map_channel 0.0.5 lfe.wav In this case, an alternative might be to output the soundtrack as 6 mono PCM wav files. (Notice that some systems and players will support up to 4 GB). But depending on the length of the original movie, that might lead you to a wav file that exceeds the 2 GB size limit for wav file. This will generate a 6 channels 16 bit PCM wav file. Let's try this : $ ffmpeg -i my_input_file.m4v -map 0:2 output_file.wav Now, maybe what you really want is to get a PCM wav 6 channels file of this soundtrack. The -map option is here to specify which stream of the input file we want to get in our output file. If we only want to extract the ac3 bitstream of the 'en' soundtrack (#0:2) to a file : $ ffmpeg -i my_input_file.m4v -map 0:2 -c:a copy output_file.ac3 It tells us that this container file includes two audio streams, identified as #0:1 and #0:2, both are ac3 bitstreams and are 5.1 soundtracks. Here's a way to obtain this result using ffprobe and ffmpeg.įirst, let's see what audio streams are available in a given file : $ ffprobe my_input_file.m4v