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| 1 | final ArrayList<SilenceInfo> silence = new ArrayList<SilenceInfo>(); | |
| 2 | ||
| 3 | ProcessBuilder n = new ProcessBuilder(); | |
| 4 | ||
| 5 | // just run silence detect to null | |
| 6 | List<String> meta = new ArrayList<String>(); | |
| 7 | meta.add("ffmpeg");
| |
| 8 | meta.add("-i");
| |
| 9 | meta.add("PATH/TO/MP3");
| |
| 10 | meta.add("-af");
| |
| 11 | meta.add("silencedetect=n=-50dB:d=1");
| |
| 12 | meta.add("-f");
| |
| 13 | meta.add("null");
| |
| 14 | meta.add("-");
| |
| 15 | n.command(meta); | |
| 16 | ||
| 17 | // TODO: run it, parse the lines and add the SilenceInfos to silence! | |
| 18 | ||
| 19 | // we got the silence now! | |
| 20 | double firstSilenceEnd = 0, lastSilenceStart = 0; | |
| 21 | ||
| 22 | boolean cutStart = false, cutEnd = false; | |
| 23 | ||
| 24 | // no silence at all | |
| 25 | if(silence.size() == 0) {
| |
| 26 | // skip | |
| 27 | } else if(silence.size() == 1) {
| |
| 28 | // has to be at the end because no end was given | |
| 29 | lastSilenceStart = silence.get(0).getTimeStart(); | |
| 30 | cutEnd = true; | |
| 31 | } else {
| |
| 32 | // silence at all ends | |
| 33 | for(SilenceInfo s : silence) {
| |
| 34 | if(firstSilenceEnd == 0 && s.getTimeEnd() != -1) | |
| 35 | firstSilenceEnd = s.getTimeEnd(); | |
| 36 | ||
| 37 | if(s.getTimeStart() != -1) | |
| 38 | lastSilenceStart = s.getTimeStart(); | |
| 39 | } | |
| 40 | cutStart = true; | |
| 41 | cutEnd = true; | |
| 42 | } | |
| 43 | ||
| 44 | n = new ProcessBuilder(); | |
| 45 | ||
| 46 | meta = new ArrayList<String>(); | |
| 47 | meta.add("ffmpeg");
| |
| 48 | meta.add("-i");
| |
| 49 | meta.add("PATH/TO/MP3);
| |
| 50 | if(cutStart) {
| |
| 51 | meta.add("-ss");
| |
| 52 | meta.add(firstSilenceEnd + ""); | |
| 53 | } | |
| 54 | if(cutEnd) {
| |
| 55 | meta.add("-t");
| |
| 56 | meta.add((lastSilenceStart - firstSilenceEnd) + ""); | |
| 57 | } | |
| 58 | meta.add("-y");
| |
| 59 | meta.add("-ab");
| |
| 60 | meta.add("AUDIO BIRATE EG 192k");
| |
| 61 | meta.add("PATH/TO/TARGET");
| |
| 62 | n.command(meta); | |
| 63 | ||
| 64 | // TODO: run it |
