ffmpeg的字幕按語言

我流看起來像這樣疊加：ffmpeg的字幕按語言

Input #0, mpegts, from 'udp://@...': 
    Duration: N/A, start: 19316.897278, bitrate: N/A 
    Program 504 
    Stream #0:0[0x13b1], 125, 1/90000: Video: mpeg2video (Main), 1 reference frame ([2][0][0][0]/0x0002), yuv420p(tv, top first, left), 720x576 [SAR 64:45 DAR 16:9], 0/1, 25 fps, 25 tbr, 90k tbn, 50 tbc 
    Stream #0:1[0x13b2], 208, 1/90000: Audio: mp2 ([3][0][0][0]/0x0003), 48000 Hz, stereo, s16p, 256 kb/s 
    Stream #0:2[0x1541](srp), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:3[0x1542](slv), 3, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:4[0x1543](hrv), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:5[0x1544](cze), 3, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:6[0x1545](hun), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:7[0x1546](ron), 3, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:8[0x1547](alb), 4, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:9[0x1548](bul), 5, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0]/0x0006) 
    Stream #0:10[0x13b9](eng), 127, 1/90000: Subtitle: dvb_teletext ([6][0][0][0]/0x0006)

我嘗試英文字幕添加到輸出視頻，但字幕/語言的數量是可變的時間。我需要按語言選擇所需的字幕。我能怎麼做？這是我沒有工作的例子。謝謝。

ffmpeg -i "udp://@..." -map s:eng -sn -map v:0 -profile:v baseline 
-c:v libx264 -b:v 1500k -maxrate 2200k -filter_complex [0:v][0:s]overlay -c:a libfdk_aac -b:a 128k /test.ts

來源

2017-02-15 Milan Čížek

嘗試

ffmpeg -i "udp://@..." -map 0:v -map 0:a -map 0:m:language:eng -c copy -f mpegts pipe:1 | ffmpeg -f mpegts -i pipe:0 -filter_complex [0:v][0:s]overlay -profile:v baseline -c:v libx264 -b:v 1500k -maxrate 2200k -c:a libfdk_aac -b:a 128k /test.ts

來源

2017-03-21 20:37:05 Mulvya

ffmpeg的字幕按語言

回答

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