[FFmpeg-trac] #9128(undetermined:new): HLS multi bitrate streaming, timestamps differ when one of the video track is copied
FFmpeg
trac at avcodec.org
Wed Mar 3 08:39:51 EET 2021
#9128: HLS multi bitrate streaming, timestamps differ when one of the video track
is copied
-------------------------------------+-------------------------------------
Reporter: krs_vital | Owner:
Type: defect | Status: new
Priority: normal | Component:
| undetermined
Version: git-master | Resolution:
Keywords: hls | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Comment (by stevenliu):
Replying to [comment:1 krs_vital]:
> ffprobe /store/records/TEST/2021/02/26/08/1614328735_0.ts
> Duration: 00:00:10.31, start: 41.698667, bitrate: 3225 kb/s
>
> ffprobe /store/records/TEST/2021/02/26/08/1614328735_1.ts
> Duration: 00:00:10.02, start: 41.421333, bitrate: 5397 kb/s
>
> ffprobe /store/records/TEST/2021/02/26/08/1614328735_2.ts
> Duration: 00:00:10.02, start: 41.421333, bitrate: 2226 kb/s
>
> Start time in "0" playlist version differ from "1" and "2":
>
> 41.698667 [ 0 ] <-> 41.421333 [ 1, 2 ]
{{{
ffprobe /store/records/TEST/2021/02/26/08/1614328735_0.ts
Input #0, mpegts, from
'/store/records/TEST/2021/02/26/08/1614328735_0.ts':
Duration: 00:00:10.31, start: 41.698667, bitrate: 3225 kb/s
Program 1
Stream #0:0[0x100]: Video: h264 (High) ([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
ffprobe /store/records/TEST/2021/02/26/08/1614328735_1.ts
Input #0, mpegts, from
'/store/records/TEST/2021/02/26/08/1614328735_1.ts':
Duration: 00:00:10.02, start: 41.421333, bitrate: 5397 kb/s
Program 1
Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B),
yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 50 fps, 50
tbr, 90k tbn, 100 tbc
ffprobe /store/records/TEST/2021/02/26/08/1614328735_2.ts
Input #0, mpegts, from
'/store/records/TEST/2021/02/26/08/1614328735_2.ts':
Stream #0:0[0x100]: Video: h264 (Main) ([27][0][0][0] / 0x001B),
yuv420p(tv, bt709, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 50 fps, 50
tbr, 90k tbn, 100 tbc
}}}
look at first stream info, the fps tbc is different to another two
streams, maybe ffprobe show_packets look all of three streams and analyze
the different should more clear.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/9128#comment:4>
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