Can someone explain this for me ?

[Guest]

Hi there I am using Vlc to debug a stream for me and it shows me these errors but I am uncertian what they mean.

what happen if I stream this to other player and codec what happening is the picture is pixilating severly. so I though of using VLC to debug . and I get these erors at the points where it pixilates and breaks up. but with vlc it just stops and continues whene the errors are finished.

what does periodicity mean?
what does would be the the probable cause of the other error causing the pixilations. the oversized pes packet or pes packet does not start with 00001

thank -you for your time

sash

main debug: stream periodicity changed from P[4] to P[5]
main debug: stream periodicity changed from P[5] to P[4]
main debug: stream periodicity changed from P[4] to P[3]
main debug: stream periodicity changed from P[3] to P[4]
main debug: stream periodicity changed from P[4] to P[1]
main debug: stream periodicity changed from P[1] to P[4]
main debug: decoded 111/111 pictures
main debug: decoded 105/105 pictures
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 13024, actual 13048
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 45, actual 176
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 27298, actual 27392
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 34578, actual 34752
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 11804, actual 11952
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_audio debug: emulated startcode (no startcode on following frame)
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 6717, actual 6800
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 26504, actual 26664
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 24058, actual 24088
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 6158, actual 6248
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 41913, actual 41928
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4131: expected 1462, actual 1472
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 23768, actual 23904
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: data loss, PES packet does not start with 000001
mpeg_system warning: Oversized PES packet for PID 4130: expected 18482, actual 18568

[The DJ]

It means that the mpeg stream is not correct.
It is not behaving as it should. Ergo there are errors in the video stream.

[Guest]

thanks DJ

I sort of knew that. But I was hoping perhaps someone would reconize the problem with the stream. And perhaps I could figure out a way To correct the stream problem. and perhaps sablize the the pixilation of the media.
I was hoping for a answer with more information then bad mpeg

[The DJ]

i don't have it

Maybe someone else does, but in general i'd say: get a better encode

[Sigmund]

There are people reading this forum that could know that, so you were right to ask. TheDJ just tend to go "supportal" a bit fast

[Guest]

Thanks for your help.

but I was wondering with a bit more investigation, for some of my pixilation problems. I was wondering if a video audio source were streamed but the audio was misaligned in the transport stream ( say it comes one second earlier ( or later) would this cause unsually behavior such as pixilation of the video.

resulting in errors simular to this

main debug: stream periodicity changed from P[3] to P[4]
mpeg_system warning: mux_rate changed prev: 6415d, cur: 6266d; expect cosmetic errors
mpeg_system warning: mux_rate changed prev: 6266d, cur: 5875d; expect cosmetic errors
mpeg_system warning: mux_rate changed prev: 5875d, cur: 5970d; expect cosmetic errors
mpeg_system warning: mux_rate changed prev: 5970d, cur: 6584d; expect cosmetic errors
mpeg_system warning: mux_rate changed prev: 6584d, cur: 2628d; expect cosmetic errors
mpeg_audio debug: emulated startcode (no startcode on following frame)
mpeg_system warning: mux_rate changed prev: 2628d, cur: 6266d; expect cosmetic errors
mpeg_system warning: mux_rate changed prev: 6266d, cur: 331d; expect cosmetic errors
mpeg_system warning: mux_rate changed prev: 331d, cur: 6324d; expect cosmetic errors
main warning: computed PTS is out of range (81837), clearing out
main warning: PTS is out of range (81854), dropping buffer
main warning: output PTS is out of range (119200), clearing out
main warning: PTS is out of range (849887), dropping buffer
mpeg_system warning: mux_rate changed prev: 6324d, cur: 5862d; expect cosmetic errors
main warning: PTS is out of range (848253), dropping buffer
libmpeg2 warning: invalid picture encountered
main warning: PTS is out of range (824735), dropping buffer
main warning: PTS is out of range (800757), dropping buffer
main warning: PTS is out of range (776775), dropping buffer
main warning: PTS is out of range (752810), dropping buffer
mpeg_audio debug: emulated startcode (no startcode on following frame)
main warning: PTS is out of range (729720), dropping buffer
main warning: vout synchro warning: pts != current_date (917582)
main debug: stream periodicity changed from B[2] to B[3]
main warning: backward_pts != current_pts (-867529)
main warning: vout synchro warning: pts != current_date (884216)
main debug: stream periodicity changed from B[3] to B[2]

thank you for time

[litghost]

the best idea would be to open it with VirtualDub, as it can sometime correct errors in stream. if it can correct the stream, then just re-encode, and your set