[FFmpeg-user] Retain audio track titles that are displayed in VLC

[Janis Hamme]

Hi all,

i'm trying to cut some TV recordings with FFmpeg and would like to keep
as much metadata as possible.

Cutting works well for the most part but the audio track titles that are
displayed in VLC for the original transport stream are always lost in
the process - even if I'm just remuxing the streams into a new TS
container. The only software I know that manages to retain the titles is
the commercial Windows tool TS-Doctor.

I've uploaded a short sample file [1] and a screenshot of the track
title display in VLC [2]. After running

ffmpeg -i test.ts -map 0 -c copy test-ffmpeg.ts

the title that was displayed for audio track 2 (visual impaired) is
gone. VLC only shows the language for each track in the output file.
I've attached the output of ffmpeg below.

Does anybody know if these audio track titles can be retained somehow?

Regards
Janis

[1] http://www.hamme.info/files/tests.ts
[2] http://www.hamme.info/files/vlc-audio-tracks.png

ffmpeg version 4.1.3 from Debian Buster:

Input #0, mpegts, from 'test.ts':
  Duration: 00:01:00.22, start: 36865.445022, bitrate: 7586 kb/s
  Program 55101
    Stream #0:0[0x201]: Video: h264 (High) ([27][0][0][0] / 0x001B),
yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k
tbn, 100 tbc
    Stream #0:1[0x202](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000
Hz, stereo, fltp, 192 kb/s
    Stream #0:2[0x203](deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000
Hz, stereo, fltp, 192 kb/s (visual impaired) (descriptions)
    Stream #0:3[0x204](deu): Audio: ac3 ([6][0][0][0] / 0x0006), 48000
Hz, 5.1(side), fltp, 448 kb/s
    Stream #0:4[0x5f1](deu): Subtitle: dvb_subtitle ([6][0][0][0] /
0x0006) (hearing impaired)
Output #0, mpegts, to 'test-ffmpeg.ts':
  Metadata:
    encoder         : Lavf58.20.100
    Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B),
yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 50 fps, 50
tbr, 90k tbn, 90k tbc
    Stream #0:1(deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, fltp, 192 kb/s
    Stream #0:2(deu): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, fltp, 192 kb/s (visual impaired) (descriptions)
    Stream #0:3(deu): Audio: ac3 ([6][0][0][0] / 0x0006), 48000 Hz,
5.1(side), fltp, 448 kb/s
    Stream #0:4(deu): Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
(hearing impaired)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
  Stream #0:2 -> #0:2 (copy)
  Stream #0:3 -> #0:3 (copy)
  Stream #0:4 -> #0:4 (copy)
Press [q] to stop, [?] for help
frame= 3012 fps=0.0 q=-1.0 Lsize=   52431kB time=00:01:00.26
bitrate=7127.7kbits/s speed= 576x   
video:42024kB audio:6118kB subtitle:6kB other streams:0kB global
headers:0kB muxing overhead: 8.896022%