Opened 7 years ago

Closed 7 years ago

#6395 closed defect (needs_more_info)

sound disappears after some time with hls encoder

Reported by: krs_vital Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords:
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

ffmpeg version:
ffmpeg version N-84010-ge2adbcb Copyright (c) 2000-2017 the FFmpeg developers

command:
/usr/local/bin/ffmpeg -copytb 1 -avoid_negative_ts 2 -fflags nobuffer+bitexact+flush_packets -overrun_nonfatal 1 -i udp://239.192.14.40:1234 -sn -dn -c copy -hls_allow_cache 0 -hls_base_url /ts/AzTV/ -hls_list_size 5 -hls_time 5 -hls_flags delete_segments+omit_endlist+split_by_time -map 0 -ignore_unknown -r 50 -strict -2 -use_localtime 1 -hls_segment_filename /hls/ts/AzTV/stream_%s.ts /hls/pl/AzTV.m3u8

link to hls chunks with playlist:
https://mycloud.g-service.ru/owncloud/index.php/s/a6AROC5odD8MCuj

solution is restart ffmpeg, after that sound appears

Change History (7)

comment:1 by Steven Liu, 7 years ago

If you writeing hls error, can you try to write mpegts again to check if the problem is hls problem or the stream problem? and maybe the problem is happened in the UDP stream ?

comment:2 by Carl Eugen Hoyos, 7 years ago

To make this a valid ticket please provide an input file that allows to reproduce and the command line you tested together with the complete, uncut console output.

comment:3 by krs_vital, 7 years ago

its not a stream problem, because in main udp stream sound works fine, and after restart ffmpeg sound apears to! this problem may appear on other streams and I can't figure out what it depends on.

I noticed that when there is a problem with the signal on the satellite, the probability of occurrence of this problem is very large

link to input file:
https://mycloud.g-service.ru/owncloud/index.php/s/Xou93ybfI0rK6Vi

comment:4 by Steven Liu, 7 years ago

I saw there is a warning message, but play the mpegts and m3u8 is ok:

message bellow:


[root@chinaffmpeg html]# ffmpeg -v verbose -re -i /root/test/out.ts -c copy -f hls a.m3u8
ffmpeg version N-85796-ga0e5f7f Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  configuration: --enable-libx264 --enable-gpl
  libavutil      55. 61.100 / 55. 61.100
  libavcodec     57. 94.100 / 57. 94.100
  libavformat    57. 72.101 / 57. 72.101
  libavdevice    57.  7.100 / 57.  7.100
  libavfilter     6. 88.100 /  6. 88.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
[mp2 @ 0x2e6f1c0] Header missing
[mpegts @ 0x2e693e0] max_analyze_duration 5000000 reached at 5016000 microseconds st:1
[mpegts @ 0x2e693e0] PES packet size mismatch
Input #0, mpegts, from '/root/test/out.ts':
  Duration: 00:03:13.44, start: 29657.128678, bitrate: 4041 kb/s
  Program 1
    Stream #0:0[0x134]: Video: mpeg2video (Main), 1 reference frame ([2][0][0][0] / 0x0002), yuv420p(tv, top first, left), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x100](eng): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 128 kb/s (hearing impaired)
[mpegts @ 0x2e9b680] muxrate VBR, pcr every 2 pkts, sdt every 2147483647, pat/pmt every 2147483647 pkts
Output #0, hls, to 'a.m3u8':
  Metadata:
    encoder         : Lavf57.72.101
    Stream #0:0: Video: mpeg2video (Main), 1 reference frame ([2][0][0][0] / 0x0002), yuv420p(tv, top first, left), 720x576 (0x0) [SAR 64:45 DAR 16:9], q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
    Stream #0:1(eng): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 128 kb/s (hearing impaired)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[hls @ 0x2e70da0] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[mpegts @ 0x2e9b680] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:0:02.55 bitrate=N/A speed=1.01x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:0:04.07 bitrate=N/A speed=1.01x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:0:06.07 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:0:07.59 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:0:10.11 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1:12.67 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2:14.15 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3:16.19 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4:18.19 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5:20.23 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6:22.23 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7:24.23 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8:26.27 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:9:28.27 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1030.31 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1132.31 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1233.83 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1336.33 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1438.35 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1540.39 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1642.39 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1743.91 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1845.88 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:1948.43 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2049.95 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2152.47 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2253.99 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2356.03 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2457.55 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2500.07 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2602.59 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2704.07 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2806.11 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:2907.63 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3010.15 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3112.15 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3214.15 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3316.19 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3417.71 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3520.23 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3621.75 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3724.24 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3826.27 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:3928.27 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4030.31 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4131.83 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4233.83 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4336.35 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4438.39 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4539.87 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4642.39 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4743.91 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4845.91 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:4948.43 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5050.47 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5152.47 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5253.99 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5355.99 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5458.03 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5500.03 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5602.59 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5704.07 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5806.07 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:5907.59 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6010.11 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6112.67 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6214.15 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6316.19 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6417.71 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6520.23 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6622.23 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6724.27 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6826.27 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:6928.31 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7030.31 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7131.83 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7233.83 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7336.35 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7438.39 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7540.39 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7641.91 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7743.91 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7845.95 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:7948.47 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8050.47 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8152.51 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8253.99 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8355.99 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8458.03 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8500.55 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8602.55 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8704.07 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8806.11 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:8908.11 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:9010.15 bitrate=N/A speed=   1x
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:9112.67 bitrate=N/A speed=   1x
[mpegts @ 0x2e693e0] PES packet size mismatch3:13.15 bitrate=N/A speed=   1x
No more output streams to write to, finishing.
[hls muxer @ 0x2e96ea0] EXT-X-MEDIA-SEQUENCE:92
frame= 4833 fps= 25 q=-1.0 Lsize=N/A time=00:03:13.59 bitrate=N/A speed=   1x
video:89632kB audio:3021kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (/root/test/out.ts):
  Input stream #0:0 (video): 4833 packets read (91782927 bytes);
  Input stream #0:1 (audio): 8055 packets read (3093056 bytes);
  Total: 12888 packets (94875983 bytes) demuxed
Output file #0 (a.m3u8):
  Output stream #0:0 (video): 4833 packets muxed (91782927 bytes);
  Output stream #0:1 (audio): 8055 packets muxed (3093056 bytes);
  Total: 12888 packets (94875983 bytes) muxed
[root@chinaffmpeg html]#
[root@chinaffmpeg html]# ffmpeg -v verbose -i out.ts -c copy -f mpegts output.ts
ffmpeg version N-85796-ga0e5f7f Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  configuration: --enable-libx264 --enable-gpl
  libavutil      55. 61.100 / 55. 61.100
  libavcodec     57. 94.100 / 57. 94.100
  libavformat    57. 72.101 / 57. 72.101
  libavdevice    57.  7.100 / 57.  7.100
  libavfilter     6. 88.100 /  6. 88.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
out.ts: No such file or directory
[root@chinaffmpeg html]#
[root@chinaffmpeg html]# ffmpeg -v verbose -i /root/test/out.ts -c copy -f mpegts output.ts
ffmpeg version N-85796-ga0e5f7f Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 4.4.7 (GCC) 20120313 (Red Hat 4.4.7-18)
  configuration: --enable-libx264 --enable-gpl
  libavutil      55. 61.100 / 55. 61.100
  libavcodec     57. 94.100 / 57. 94.100
  libavformat    57. 72.101 / 57. 72.101
  libavdevice    57.  7.100 / 57.  7.100
  libavfilter     6. 88.100 /  6. 88.100
  libswscale      4.  7.101 /  4.  7.101
  libswresample   2.  8.100 /  2.  8.100
  libpostproc    54.  6.100 / 54.  6.100
[mp2 @ 0x2de41a0] Header missing
[mpegts @ 0x2dde3c0] max_analyze_duration 5000000 reached at 5016000 microseconds st:1
[mpegts @ 0x2dde3c0] PES packet size mismatch
Input #0, mpegts, from '/root/test/out.ts':
  Duration: 00:03:13.44, start: 29657.128678, bitrate: 4041 kb/s
  Program 1
    Stream #0:0[0x134]: Video: mpeg2video (Main), 1 reference frame ([2][0][0][0] / 0x0002), yuv420p(tv, top first, left), 720x576 [SAR 64:45 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x100](eng): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 128 kb/s (hearing impaired)
[mpegts @ 0x2de5d80] muxrate VBR, pcr every 9000 pkts, sdt every 200, pat/pmt every 40 pkts
Output #0, mpegts, to 'output.ts':
  Metadata:
    encoder         : Lavf57.72.101
    Stream #0:0: Video: mpeg2video (Main), 1 reference frame ([2][0][0][0] / 0x0002), yuv420p(tv, top first, left), 720x576 (0x0) [SAR 64:45 DAR 16:9], q=2-31, 25 fps, 25 tbr, 90k tbn, 90k tbc
    Stream #0:1(eng): Audio: mp2 ([4][0][0][0] / 0x0004), 48000 Hz, stereo, s16p, 128 kb/s (hearing impaired)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mpegts @ 0x2de5d80] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[mpegts @ 0x2dde3c0] PES packet size mismatch
No more output streams to write to, finishing.
frame= 4833 fps=0.0 q=-1.0 Lsize=  100936kB time=00:03:13.59 bitrate=4271.1kbits/s speed=1.18e+03x
video:89632kB audio:3021kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.940586%
Input file #0 (/root/test/out.ts):
  Input stream #0:0 (video): 4833 packets read (91782927 bytes);
  Input stream #0:1 (audio): 8055 packets read (3093056 bytes);
  Total: 12888 packets (94875983 bytes) demuxed
Output file #0 (output.ts):
  Output stream #0:0 (video): 4833 packets muxed (91782927 bytes);
  Output stream #0:1 (audio): 8055 packets muxed (3093056 bytes);
  Total: 12888 packets (94875983 bytes) muxed
[root@chinaffmpeg html]#

comment:5 by krs_vital, 7 years ago

and what can i do when i see this message?

"Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly"

i saw many streams that shown this

how can i set timestamps for input mpegts streams?

in reply to:  5 comment:6 by Steven Liu, 7 years ago

Replying to krs_vital:

and what can i do when i see this message?

"Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly"

i saw many streams that shown this

how can i set timestamps for input mpegts streams?

Maybe the problem is from encoders? the message just warning user there maybe have problem in output files.

I cannot sure how to fix the input stream, waiting other guys response this :(

in reply to:  5 comment:7 by Carl Eugen Hoyos, 7 years ago

Resolution: needs_more_info
Status: newclosed

Replying to krs_vital:

and what can i do when i see this message?

"Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly"

There is nothing you can do, the message is not meant for users of the ffmpeg command line utility.

Please explain how I can reproduce the "sound disappears" issue with the sample you uploaded by providing the command line you tested together with the complete, uncut console ouptut and reopen this ticket.

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