[FFmpeg-user] select audio stream by [0x80] , stream_id ?

[sean darcy]

On 10/17/18 7:13 PM, sean darcy wrote:
> I have some vob's where the language tracks aren't consistent. That is 
> Stream 0:2 is sometimes English , sometimes not. But [0x80] is always 
> English with these vobs.
> 
> VOB A:
> 
> Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m, 
> progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 29.97 fps, 
> 59.94 tbr, 90k tbn, 59.94 tbc
>      Stream #0:1[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
>      Stream #0:2[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
> 
> VOB B
> 
>      Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, 
> smpte170m, progressive), 720x480 [SAR 8:9 DAR 4:3], Closed Captions, 
> 29.97 fps, 59.94 tbr, 90k tbn, 59.94 tbc
>      Stream #0:1[0x20]: Subtitle: dvd_subtitle
>      Stream #0:2[0x21]: Subtitle: dvd_subtitle
>      Stream #0:3[0x82]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
>      Stream #0:4[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
> 
> First of all, what's the name for the [0xXX] identifiers ?
> 
> And is there a way to use those identifiers to select a stream?
> This does not work:
> -map a:[0x80]
> 
> Thanks for any help.
> 
Even a blind squirrel can sometimes find a nut:

this works

-map i:0x80