W dniu 2026-06-25 o 00:58, Deron via ffmpeg-user pisze:
I have an srt stream that I ingest that includes three separate
programs in a single mpegts stream. I was using ffmpeg to split it
into 3 individual streams. This worked fine until recently when they
must have changed something in the stream. They swear the stream
works for others, and they are out of their depth in diagnosing what
was changed on their end.
I captured a couple minutes of this stream using tsduck, and the file
can be pulled from https://faroutprojects.com/daystar.ts
A simple example that fails is:
> ffmpeg -i https://faroutprojects.com/daystar.ts -map p:1 -y
daystar_hd.ts -map p:2 -y daystar_es.ts -map p:3 -y daystar_sd.ts
It gives tons of errors like this:
[aist#0:5/ac3 @ 0x5e9de818bac0] timestamp discontinuity (stream
id=53): 15975889, new offset= -15975973
[... cut ...]
On 6/24/26 7:16 PM, BloodMan via ffmpeg-user wrote:
Hello Deron,
ffmpeg is trying to align streams, that is impossible - so you have
many timestamp errors.
btw. Your example is seriously ruining the quality ;p
Try:
ffmpeg -copyts -i https://faroutprojects.com/daystar.ts -map p:1 -c
copy -y daystar_hd.ts -map p:2 -c copy -y daystar_es.ts -map p:3 -c
copy -y daystar_sd.ts
(yes, the key is "-copyts" of course)
Have fun.
Thanks BloodMan,
btw. Your example is seriously ruining the quality ;p
;p
I am presuming then that the streams were originally encoding using the
same machine/clock, and they must have moved one or more to different
machines/clocks?
I'm not sure why ffmpeg was trying to align the streams, but I clearly
see this fixes the issue. Thanks again! I really appreciate it!
Deron
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