2/16/2023 0 Comments Ffmpeg extract audio losslessNow that you have extracted the audio stream, you can do anything you wish with it. You can now use ffmpeg again to show that audio.ac3 only contains the ac3 audio stream. rw-r-r- 1 username gmendoza 250M 09:47 audio.ac3 The output below shows that this stream is about 250Mb. I just need to enable lossless vcodec and find a lossless acodec aside from flac in AAC. flac audio and I use -ar & -ac just to remind myself in the future to use them when I find a lossless acodec. Video:0kB audio:255799kB global headers:0kB muxing overhead 0.000000% The reason I still use -acodec copy is because I believe. From what I gather, I should choose Settings>output>recording>type:Custom Output FFMPEG. I want to screenrecord, but have lossless audio (not lossless video & audio, 'tremendous file size'). The following command will extract the AC3 audio stream to a file called audio.ac3.įfmpeg -i video.avi -acodec copy audio.ac3 I saw this thread, and also a video (which I was able to understand better). Stream #0.1: Audio: ac3, 48000 Hz, 5.1, s16, 448 kb/sĪt least one output file must be specified Stream #0.0: Video: mpeg4, yuv420p, 672x576 (snipped for brevity) Just use ffmpeg without any output options, and you can see there are two streams (0.0 and 0.1), the second is AC3 audio.ĭuration: 01:17:57.64, start: 0.000000, bitrate: 1587 kb/s The following example shows how to identify the available audio streams of the file video.avi. If you have a source video file encoded with an AC3 Dolby Digital audio stream, you can extract the audio in it’s native format using FFMpeg. Posted by admin on Februunder Tech Tips | Be the First to Comment
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