[FFmpeg-trac] #6573(avformat:new): lost sound when timestamp discontinuity appears with HLC encoder
FFmpeg
trac at avcodec.org
Fri Aug 18 19:21:45 EEST 2017
#6573: lost sound when timestamp discontinuity appears with HLC encoder
------------------------------------+------------------------------------
Reporter: krs_vital | Owner:
Type: defect | Status: new
Priority: normal | Component: avformat
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by cehoyos):
I tested the following:
{{{
$ ffmpeg -i udp://@239.192.100.100:1234 -c copy -t 90 out.ts
}}}
and in another console
{{{
$ multicat -t 10 ./Shant_Premium.ts 239.192.100.100
}}}
The output file out.ts plays as good as Shant_Premium.ts with FFplay, I
can hear audio for approximately 90 seconds.
Console output:
{{{
$ ffmpeg -i udp://@239.192.100.100:1234 -c copy -t 90 out.ts
ffmpeg version N-87001-gf454416 Copyright (c) 2000-2017 the FFmpeg
developers
built with gcc 6.3.0 (GCC)
configuration: --enable-gpl
libavutil 55. 74.100 / 55. 74.100
libavcodec 57.102.100 / 57.102.100
libavformat 57. 76.100 / 57. 76.100
libavdevice 57. 7.100 / 57. 7.100
libavfilter 6. 99.100 / 6. 99.100
libswscale 4. 7.102 / 4. 7.102
libswresample 2. 8.100 / 2. 8.100
libpostproc 54. 6.100 / 54. 6.100
[h264 @ 0x37db540] non-existing SPS 0 referenced in buffering period
[h264 @ 0x37db540] SPS unavailable in decode_picture_timing
[h264 @ 0x37db540] non-existing PPS 0 referenced
[h264 @ 0x37db540] non-existing SPS 0 referenced in buffering period
[h264 @ 0x37db540] SPS unavailable in decode_picture_timing
[h264 @ 0x37db540] non-existing PPS 0 referenced
[h264 @ 0x37db540] decode_slice_header error
[h264 @ 0x37db540] no frame!
...
[h264 @ 0x37db540] non-existing SPS 0 referenced in buffering period
[h264 @ 0x37db540] SPS unavailable in decode_picture_timing
[h264 @ 0x37db540] non-existing PPS 0 referenced
[h264 @ 0x37db540] non-existing SPS 0 referenced in buffering period
[h264 @ 0x37db540] SPS unavailable in decode_picture_timing
[h264 @ 0x37db540] non-existing PPS 0 referenced
[h264 @ 0x37db540] decode_slice_header error
[h264 @ 0x37db540] no frame!
Input #0, mpegts, from 'udp://@239.192.100.100:1234':
Duration: N/A, start: 39165.377300, bitrate: N/A
Program 50
Metadata:
service_name : Shant Premium HD
service_provider: Shant TV
Stream #0:0[0x1f5]: Video: h264 (Main) ([27][0][0][0] / 0x001B),
yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50
tbr, 90k tbn, 50 tbc
Stream #0:1[0x1f6](eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, s16p, 128 kb/s
Output #0, mpegts, to 'out.ts':
Metadata:
encoder : Lavf57.76.100
Stream #0:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv,
bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 50 tbr,
90k tbn, 90k tbc
Stream #0:1(eng): Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz,
stereo, s16p, 128 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (copy)
Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mpegts @ 0x37b63e0] PES packet size mismatchme=00:00:37.46
bitrate=3750.7kbits/s speed=0.914x
frame= 3909 fps= 41 q=-1.0 Lsize= 39481kB time=00:01:29.98
bitrate=3594.4kbits/s speed=0.947x
video:34744kB audio:1406kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 9.214217%
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6573#comment:10>
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