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如何选择流进行映射

tag-icon • tag-icon ffmpeg
如何选择流进行映射

以下是直播信息

  Program 0
    Metadata:
      variant_bitrate : 660144
    Stream #0:0(en): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp (default)
    Metadata:
      comment         : English
    Stream #0:1: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:2(hi): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp
    Metadata:
      comment         : Hindi
    Stream #0:3: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:4(bn): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp
    Metadata:
      comment         : Bengali
    Stream #0:5: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:6(mr): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp
    Metadata:
      comment         : Marathi
    Stream #0:7: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:8: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Metadata:
      variant_bitrate : 660144
    Stream #0:9: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 660144
    Stream #0:10: Data: timed_id3 (ID3  / 0x20334449)
    Metadata:
      variant_bitrate : 660144
  Program 1
    Metadata:
      variant_bitrate : 944962
    Stream #0:0(en): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp (default)
    Metadata:
      comment         : English
    Stream #0:1: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:2(hi): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp
    Metadata:
      comment         : Hindi
    Stream #0:3: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:4(bn): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp
    Metadata:
      comment         : Bengali
    Stream #0:5: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:6(mr): Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, mono, fltp
    Metadata:
      comment         : Marathi
    Stream #0:7: Data: timed_id3 (ID3  / 0x20334449)
    Stream #0:11: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 640x360 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Metadata:
      variant_bitrate : 944962
    Stream #0:12: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 944962
    Stream #0:13: Data: timed_id3 (ID3  / 0x20334449)
    Metadata:
      variant_bitrate : 944962

我希望从程序 1 映射 0:11 和 0:2。可能需要 p:program_id[:stream_index]。

这是我尝试过的，但每当命令成功执行时，它就会从程序 0 映射 0:0 两次。

ffmpeg -i "https://cdnapisec.kaltura.com/p/1982551/sp/198255100/playManifest/protocol/https/entryId/0_eyx5tw99/format/applehttp/defaultAudioLang/English/tags/tv_hd/f/a.m3u8" -map p:1:#0:11 -map p:1:#0:2 -c copy video101.ts
ffmpeg -i "https://cdnapisec.kaltura.com/p/1982551/sp/198255100/playManifest/protocol/https/entryId/0_eyx5tw99/format/applehttp/defaultAudioLang/English/tags/tv_hd/f/a.m3u8" -map p:1:#11 -map p:1:#2 -c copy video101.ts
ffmpeg -i "https://cdnapisec.kaltura.com/p/1982551/sp/198255100/playManifest/protocol/https/entryId/0_eyx5tw99/format/applehttp/defaultAudioLang/English/tags/tv_hd/f/a.m3u8" -map p:1:[0:11] -map p:1:[0:2] -c copy video101.ts
ffmpeg -i "https://cdnapisec.kaltura.com/p/1982551/sp/198255100/playManifest/protocol/https/entryId/0_eyx5tw99/format/applehttp/defaultAudioLang/English/tags/tv_hd/f/a.m3u8" -map p:1:[:11] -map p:1:[:2] -c copy video101.ts
ffmpeg -i "https://cdnapisec.kaltura.com/p/1982551/sp/198255100/playManifest/protocol/https/entryId/0_eyx5tw99/format/applehttp/defaultAudioLang/English/tags/tv_hd/f/a.m3u8" -map p:Program 1:[:11] -map p:Program 1:[:2] -c copy video101.ts

答案1

快到了。

... -map p:1:8 -map p:1:2 -c copy video101.ts

流id指的是程序中的流位置（从0开始）

在这种特殊情况下，您还可以使用绝对流 ID，因为流在​​不同的程序中重新列出但引用相同的底层流。

... -map 0:11 -map 0:2 -c copy video101.ts

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