These timestamps are received from from av_read_frame() in the given order. There is not much scope to go wrong before that. I am using default configuration to start streaming. Can u suggest what setting/config/etc can result into something like this?
Thanks and regards Abhishek On 01-May-2014, at 3:13 PM, wm4 <[email protected]> wrote: > On Wed, 30 Apr 2014 17:51:06 +0530 > Abhishek Maniyar <[email protected]> wrote: > >> Hey sorry for the complicated log. Following a simplified version of that: >> >> Log is in format: >> hr:mm:ss.ms (packet receive time from av_read_frame):: PTS :: <Timestamp in >> ms> (AVPacket) >> >> 12:26:50.878 :: PTS: 21904.921875 >> 12:26:50.917 :: PTS: 21945.855469 >> 12:26:50.960 :: PTS: 21986.033203 >> 12:26:51.000 :: PTS: 22025.255859 >> 12:26:51.040 :: PTS: 22069.566406 >> 12:26:51.081 :: PTS: 22105.255859 >> 12:26:51.122 :: PTS: 22145.322266 >> 12:26:51.165 :: PTS: 22184.611328 >> 12:26:51.204 :: PTS: 22225.812500 >> 12:26:51.250 :: PTS: 22264.457031 >> …. >> 12:26:53.306 :: PTS: 21924.312500 >> 12:26:53.347 :: PTS: 21965.599609 >> 12:26:53.352 :: PTS: 22004.466797 >> 12:26:53.393 :: PTS: 22043.710938 >> 12:26:53.427 :: PTS: 22084.667969 >> 12:26:53.476 :: PTS: 22124.066406 >> 12:26:53.507 :: PTS: 22164.800781 >> 12:26:53.551 :: PTS: 22205.644531 >> 12:26:53.593 :: PTS: 22244.023438 >> 12:26:53.631 :: PTS: 22283.644531 >> 12:26:53.668 :: PTS: 22324.710938 >> 12:26:53.712 :: PTS: 22364.267578 >> 12:26:53.751 :: PTS: 22404.044922 >> 12:26:53.793 :: PTS: 22444.888672 >> >> >> Its a 25FPS video, so i should get 1 video frame to be displayed for 40 ms >> (25 frames for 40ms each = 1000ms = 1s ,so 25FPS ). >> >> My problem is : >> I got frames: >> 12:26:50.878 :: PTS: 21904.921875 (this is a frame i got to be displayed at >> 21904.921875 ms) >> 12:26:50.917 :: PTS: 21945.855469 (this is a frame i got to be displayed at >> 21945.855469 ms) >> approx 40 ms.. which is right. and similar for subsequent frames. >> >> after around 3 seconds I got >> 12:26:53.306 :: PTS: 21924.312500 (this is a frame i got to be displayed at >> 21924.312500) >> 12:26:53.347 :: PTS: 21965.599609 (this is a frame i got to be displayed at >> 21965.599609) >> approx 40 ms.. which is right. and similar for subsequent frames. >> >> but my problem is i already had frames to be displayed in dat time block( >> 21904.921875 ms - 22264.457031ms ), which I already displayed and >> discarded. Now after 3 seconds i again started getting packets with PTS for >> the same time time block. >> >> Thanks for your help. > > Maybe these are merely wrapping timestamps? Normally I'd expect that > timestamps don't wrap that often, but I don't know what your source > does. > >> - Abhishek >> >> >> On 30-Apr-2014, at 5:22 PM, wm4 <[email protected]> wrote: >> >>> On Wed, 30 Apr 2014 16:37:04 +0530 >>> Abhishek Maniyar <[email protected]> wrote: >>> >>>> But how can i sort them? I get older packet after am done displaying the >>>> later one. >>> >>> You know that for each packet you feed to the decoder, you get back a >>> decoded frame. So you put all packet PTS values in an array, and pick >>> the PTS with the lowest value each time a frame is output. >>> >>>> Also there looks like a overlap in block.. if we see the first part, the >>>> PTS looks like properly organised. next PTS is at expected time. But after >>>> some time, we see packets for same time block, which look right to.. even >>>> in there next PTS is at tight time wrt to previous. >>>> I am unable to understand how can I get different packets for same time >>>> block after some time? >>>> In the following example , I am getting frames for time stamp 21904 to >>>> 22264 twice. And if we see to both blocks of data independently, they both >>>> look complete. >>> >>> Then I don't know. (Though I don't see any double timestamps, maybe >>> bring the output in a more readable and less redundant format?) >>> >>>> Reorder is when packets are not in order. But here it looks like there are >>>> enough packets in both the sections. Thats what is confusing me more. >>>> >>>> 2014-04-29 12:26:50.878 MyPlayer[197:5c07] PTS: 21904.921875(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:50.917 MyPlayer[197:5c07] PTS: 21945.855469(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:50.960 MyPlayer[197:5c07] PTS: 21986.033203(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:51.000 MyPlayer[197:5c07] PTS: 22025.255859(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:51.040 MyPlayer[197:5c07] PTS: 22069.566406(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:51.081 MyPlayer[197:5c07] PTS: 22105.255859(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:51.122 MyPlayer[197:5c07] PTS: 22145.322266(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:51.165 MyPlayer[197:5c07] PTS: 22184.611328(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:51.204 MyPlayer[197:5c07] PTS: 22225.812500(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:51.250 MyPlayer[197:5c07] PTS: 22264.457031(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> . >>>> . >>>> . >>>> 2014-04-29 12:26:53.304 MyPlayer[197:5c07] Got older packet >>>> (21924.312500): 50 >>>> 2014-04-29 12:26:53.306 MyPlayer[197:5c07] PTS: 21924.312500(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:53.343 MyPlayer[197:5c07] Got older packet >>>> (21965.599609): 51 >>>> 2014-04-29 12:26:53.347 MyPlayer[197:5c07] PTS: 21965.599609(Duration : >>>> 40.000000) Bufferred: 3600.00 >>>> 2014-04-29 12:26:53.350 MyPlayer[197:5c07] Got older packet >>>> (22004.466797): 52 >>>> 2014-04-29 12:26:53.352 MyPlayer[197:5c07] PTS: 22004.466797(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.391 MyPlayer[197:5c07] Got older packet >>>> (22043.710938): 53 >>>> 2014-04-29 12:26:53.393 MyPlayer[197:5c07] PTS: 22043.710938(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.424 MyPlayer[197:5c07] Got older packet >>>> (22084.667969): 54 >>>> 2014-04-29 12:26:53.427 MyPlayer[197:5c07] PTS: 22084.667969(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.473 MyPlayer[197:5c07] Got older packet >>>> (22124.066406): 55 >>>> 2014-04-29 12:26:53.476 MyPlayer[197:5c07] PTS: 22124.066406(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.506 MyPlayer[197:5c07] Got older packet >>>> (22164.800781): 56 >>>> 2014-04-29 12:26:53.507 MyPlayer[197:5c07] PTS: 22164.800781(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.549 MyPlayer[197:5c07] Got older packet >>>> (22205.644531): 57 >>>> 2014-04-29 12:26:53.551 MyPlayer[197:5c07] PTS: 22205.644531(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.590 MyPlayer[197:5c07] Got older packet >>>> (22244.023438): 58 >>>> 2014-04-29 12:26:53.593 MyPlayer[197:5c07] PTS: 22244.023438(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.628 MyPlayer[197:5c07] Got older packet >>>> (22283.644531): 59 >>>> 2014-04-29 12:26:53.631 MyPlayer[197:5c07] PTS: 22283.644531(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.668 MyPlayer[197:5c07] PTS: 22324.710938(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.712 MyPlayer[197:5c07] PTS: 22364.267578(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.751 MyPlayer[197:5c07] PTS: 22404.044922(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> 2014-04-29 12:26:53.793 MyPlayer[197:5c07] PTS: 22444.888672(Duration : >>>> 40.000000) Bufferred: 3640.00 >>>> >>>> >>>> On 30-Apr-2014, at 4:13 PM, wm4 <[email protected]> wrote: >>>> >>>>> On Wed, 30 Apr 2014 16:05:22 +0530 >>>>> Abhishek Maniyar <[email protected]> wrote: >>>>> >>>>>> I am new to using FFMPEG. >>>>>> >>>>>> YES, I am calculating PTS as "frame.pts = packet.pts *_videoTimeBase;". >>>>>> I am not using FFMPEG decoder(using a 3rd party decoder). So i don't >>>>>> have AVFrame. Hence only PTS I have is the one I get from AVPacket. I >>>>>> have printed PTS in the sequence I get packet from (av_read_frame) >>>>>> >>>>>> Please see the following log: >>>>>> . >>>>>> . >>>>>> . >>>>>> . >>>>>> . >>>>>> 2014-04-29 12:26:50.878 MyPlayer[197:5c07] PTS: 21904.921875(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:50.917 MyPlayer[197:5c07] PTS: 21945.855469(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:50.960 MyPlayer[197:5c07] PTS: 21986.033203(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.000 MyPlayer[197:5c07] PTS: 22025.255859(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.040 MyPlayer[197:5c07] PTS: 22069.566406(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.081 MyPlayer[197:5c07] PTS: 22105.255859(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.122 MyPlayer[197:5c07] PTS: 22145.322266(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.165 MyPlayer[197:5c07] PTS: 22184.611328(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.204 MyPlayer[197:5c07] PTS: 22225.812500(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.250 MyPlayer[197:5c07] PTS: 22264.457031(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.293 MyPlayer[197:5c07] PTS: 22305.322266(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.332 MyPlayer[197:5c07] Got older packet >>>>>> (19965.955078): 1 >>>>>> 2014-04-29 12:26:51.333 MyPlayer[197:5c07] PTS: 19965.955078(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.372 MyPlayer[197:5c07] Got older packet >>>>>> (20004.978516): 2 >>>>>> 2014-04-29 12:26:51.375 MyPlayer[197:5c07] PTS: 20004.978516(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.412 MyPlayer[197:5c07] Got older packet >>>>>> (20045.822266): 3 >>>>>> 2014-04-29 12:26:51.415 MyPlayer[197:5c07] PTS: 20045.822266(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.456 MyPlayer[197:5c07] Got older packet >>>>>> (20085.267578): 4 >>>>>> 2014-04-29 12:26:51.460 MyPlayer[197:5c07] PTS: 20085.267578(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.500 MyPlayer[197:5c07] Got older packet >>>>>> (20124.734375): 5 >>>>>> 2014-04-29 12:26:51.503 MyPlayer[197:5c07] PTS: 20124.734375(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.545 MyPlayer[197:5c07] Got older packet >>>>>> (20166.222656): 6 >>>>>> 2014-04-29 12:26:51.547 MyPlayer[197:5c07] PTS: 20166.222656(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.590 MyPlayer[197:5c07] Got older packet >>>>>> (20205.333984): 7 >>>>>> 2014-04-29 12:26:51.592 MyPlayer[197:5c07] PTS: 20205.333984(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.630 MyPlayer[197:5c07] Got older packet >>>>>> (20245.044922): 8 >>>>>> 2014-04-29 12:26:51.632 MyPlayer[197:5c07] PTS: 20245.044922(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.664 MyPlayer[197:5c07] Got older packet >>>>>> (20286.201172): 9 >>>>>> 2014-04-29 12:26:51.666 MyPlayer[197:5c07] PTS: 20286.201172(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:51.672 MyPlayer[197:5c07] Got older packet >>>>>> (20324.777344): 10 >>>>>> 2014-04-29 12:26:51.673 MyPlayer[197:5c07] PTS: 20324.777344(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.708 MyPlayer[197:5c07] Got older packet >>>>>> (20364.800781): 11 >>>>>> 2014-04-29 12:26:51.709 MyPlayer[197:5c07] PTS: 20364.800781(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.745 MyPlayer[197:5c07] Got older packet >>>>>> (20405.623047): 12 >>>>>> 2014-04-29 12:26:51.748 MyPlayer[197:5c07] PTS: 20405.623047(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.785 MyPlayer[197:5c07] Got older packet >>>>>> (20445.867188): 13 >>>>>> 2014-04-29 12:26:51.789 MyPlayer[197:5c07] PTS: 20445.867188(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.827 MyPlayer[197:5c07] Got older packet >>>>>> (20484.888672): 14 >>>>>> 2014-04-29 12:26:51.829 MyPlayer[197:5c07] PTS: 20484.888672(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.866 MyPlayer[197:5c07] Got older packet >>>>>> (20525.466797): 15 >>>>>> 2014-04-29 12:26:51.867 MyPlayer[197:5c07] PTS: 20525.466797(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.915 MyPlayer[197:5c07] Got older packet >>>>>> (20566.177734): 16 >>>>>> 2014-04-29 12:26:51.916 MyPlayer[197:5c07] PTS: 20566.177734(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.947 MyPlayer[197:5c07] Got older packet >>>>>> (20605.355469): 17 >>>>>> 2014-04-29 12:26:51.949 MyPlayer[197:5c07] PTS: 20605.355469(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:51.989 MyPlayer[197:5c07] Got older packet >>>>>> (20645.867188): 18 >>>>>> 2014-04-29 12:26:51.991 MyPlayer[197:5c07] PTS: 20645.867188(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.029 MyPlayer[197:5c07] Got older packet >>>>>> (20685.066406): 19 >>>>>> 2014-04-29 12:26:52.034 MyPlayer[197:5c07] PTS: 20685.066406(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.077 MyPlayer[197:5c07] Got older packet >>>>>> (20725.000000): 20 >>>>>> 2014-04-29 12:26:52.080 MyPlayer[197:5c07] PTS: 20725.000000(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.110 MyPlayer[197:5c07] Got older packet >>>>>> (20766.000000): 21 >>>>>> 2014-04-29 12:26:52.112 MyPlayer[197:5c07] PTS: 20766.000000(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.152 MyPlayer[197:5c07] Got older packet >>>>>> (20805.222656): 22 >>>>>> 2014-04-29 12:26:52.160 MyPlayer[197:5c07] PTS: 20805.222656(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.194 MyPlayer[197:5c07] Got older packet >>>>>> (20844.689453): 23 >>>>>> 2014-04-29 12:26:52.197 MyPlayer[197:5c07] PTS: 20844.689453(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.234 MyPlayer[197:5c07] Got older packet >>>>>> (20886.333984): 24 >>>>>> 2014-04-29 12:26:52.238 MyPlayer[197:5c07] PTS: 20886.333984(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.272 MyPlayer[197:5c07] Got older packet >>>>>> (20924.800781): 25 >>>>>> 2014-04-29 12:26:52.275 MyPlayer[197:5c07] PTS: 20924.800781(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.313 MyPlayer[197:5c07] Got older packet >>>>>> (20964.378906): 26 >>>>>> 2014-04-29 12:26:52.315 MyPlayer[197:5c07] PTS: 20964.378906(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.359 MyPlayer[197:5c07] Got older packet >>>>>> (21006.044922): 27 >>>>>> 2014-04-29 12:26:52.360 MyPlayer[197:5c07] PTS: 21006.044922(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.396 MyPlayer[197:5c07] Got older packet >>>>>> (21045.267578): 28 >>>>>> 2014-04-29 12:26:52.398 MyPlayer[197:5c07] PTS: 21045.267578(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.440 MyPlayer[197:5c07] Got older packet >>>>>> (21083.912109): 29 >>>>>> 2014-04-29 12:26:52.449 MyPlayer[197:5c07] PTS: 21083.912109(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.476 MyPlayer[197:5c07] Got older packet >>>>>> (21125.689453): 30 >>>>>> 2014-04-29 12:26:52.478 MyPlayer[197:5c07] PTS: 21125.689453(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.517 MyPlayer[197:5c07] Got older packet >>>>>> (21165.023438): 31 >>>>>> 2014-04-29 12:26:52.522 MyPlayer[197:5c07] PTS: 21165.023438(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.557 MyPlayer[197:5c07] Got older packet >>>>>> (21204.289062): 32 >>>>>> 2014-04-29 12:26:52.558 MyPlayer[197:5c07] PTS: 21204.289062(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.598 MyPlayer[197:5c07] Got older packet >>>>>> (21245.644531): 33 >>>>>> 2014-04-29 12:26:52.600 MyPlayer[197:5c07] PTS: 21245.644531(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:52.639 MyPlayer[197:5c07] Got older packet >>>>>> (21285.156250): 34 >>>>>> 2014-04-29 12:26:52.641 MyPlayer[197:5c07] PTS: 21285.156250(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.679 MyPlayer[197:5c07] Got older packet >>>>>> (21323.623047): 35 >>>>>> 2014-04-29 12:26:52.681 MyPlayer[197:5c07] PTS: 21323.623047(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:52.735 MyPlayer[197:5c07] Got older packet >>>>>> (21370.267578): 36 >>>>>> 2014-04-29 12:26:52.736 MyPlayer[197:5c07] PTS: 21370.267578(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:52.773 MyPlayer[197:5c07] Got older packet >>>>>> (21405.111328): 37 >>>>>> 2014-04-29 12:26:52.774 MyPlayer[197:5c07] PTS: 21405.111328(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:52.811 MyPlayer[197:5c07] Got older packet >>>>>> (21444.957031): 38 >>>>>> 2014-04-29 12:26:52.813 MyPlayer[197:5c07] PTS: 21444.957031(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:52.844 MyPlayer[197:5c07] Got older packet >>>>>> (21485.667969): 39 >>>>>> 2014-04-29 12:26:52.862 MyPlayer[197:5c07] PTS: 21485.667969(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:52.892 MyPlayer[197:5c07] Got older packet >>>>>> (21525.134766): 40 >>>>>> 2014-04-29 12:26:52.893 MyPlayer[197:5c07] PTS: 21525.134766(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:52.943 MyPlayer[197:5c07] Got older packet >>>>>> (21565.066406): 41 >>>>>> 2014-04-29 12:26:52.944 MyPlayer[197:5c07] PTS: 21565.066406(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:52.974 MyPlayer[197:5c07] Got older packet >>>>>> (21605.466797): 42 >>>>>> 2014-04-29 12:26:52.975 MyPlayer[197:5c07] PTS: 21605.466797(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.016 MyPlayer[197:5c07] Got older packet >>>>>> (21645.267578): 43 >>>>>> 2014-04-29 12:26:53.021 MyPlayer[197:5c07] PTS: 21645.267578(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.056 MyPlayer[197:5c07] Got older packet >>>>>> (21684.777344): 44 >>>>>> 2014-04-29 12:26:53.058 MyPlayer[197:5c07] PTS: 21684.777344(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.099 MyPlayer[197:5c07] Got older packet >>>>>> (21725.289062): 45 >>>>>> 2014-04-29 12:26:53.101 MyPlayer[197:5c07] PTS: 21725.289062(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.139 MyPlayer[197:5c07] Got older packet >>>>>> (21764.800781): 46 >>>>>> 2014-04-29 12:26:53.141 MyPlayer[197:5c07] PTS: 21764.800781(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.179 MyPlayer[197:5c07] Got older packet >>>>>> (21804.066406): 47 >>>>>> 2014-04-29 12:26:53.180 MyPlayer[197:5c07] PTS: 21804.066406(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.220 MyPlayer[197:5c07] Got older packet >>>>>> (21845.466797): 48 >>>>>> 2014-04-29 12:26:53.223 MyPlayer[197:5c07] PTS: 21845.466797(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.262 MyPlayer[197:5c07] Got older packet >>>>>> (21884.378906): 49 >>>>>> 2014-04-29 12:26:53.265 MyPlayer[197:5c07] PTS: 21884.378906(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.304 MyPlayer[197:5c07] Got older packet >>>>>> (21924.312500): 50 >>>>>> 2014-04-29 12:26:53.306 MyPlayer[197:5c07] PTS: 21924.312500(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.343 MyPlayer[197:5c07] Got older packet >>>>>> (21965.599609): 51 >>>>>> 2014-04-29 12:26:53.347 MyPlayer[197:5c07] PTS: 21965.599609(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:53.350 MyPlayer[197:5c07] Got older packet >>>>>> (22004.466797): 52 >>>>>> 2014-04-29 12:26:53.352 MyPlayer[197:5c07] PTS: 22004.466797(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.391 MyPlayer[197:5c07] Got older packet >>>>>> (22043.710938): 53 >>>>>> 2014-04-29 12:26:53.393 MyPlayer[197:5c07] PTS: 22043.710938(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.424 MyPlayer[197:5c07] Got older packet >>>>>> (22084.667969): 54 >>>>>> 2014-04-29 12:26:53.427 MyPlayer[197:5c07] PTS: 22084.667969(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.473 MyPlayer[197:5c07] Got older packet >>>>>> (22124.066406): 55 >>>>>> 2014-04-29 12:26:53.476 MyPlayer[197:5c07] PTS: 22124.066406(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.506 MyPlayer[197:5c07] Got older packet >>>>>> (22164.800781): 56 >>>>>> 2014-04-29 12:26:53.507 MyPlayer[197:5c07] PTS: 22164.800781(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.549 MyPlayer[197:5c07] Got older packet >>>>>> (22205.644531): 57 >>>>>> 2014-04-29 12:26:53.551 MyPlayer[197:5c07] PTS: 22205.644531(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.590 MyPlayer[197:5c07] Got older packet >>>>>> (22244.023438): 58 >>>>>> 2014-04-29 12:26:53.593 MyPlayer[197:5c07] PTS: 22244.023438(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.628 MyPlayer[197:5c07] Got older packet >>>>>> (22283.644531): 59 >>>>>> 2014-04-29 12:26:53.631 MyPlayer[197:5c07] PTS: 22283.644531(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.668 MyPlayer[197:5c07] PTS: 22324.710938(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.712 MyPlayer[197:5c07] PTS: 22364.267578(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.751 MyPlayer[197:5c07] PTS: 22404.044922(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.793 MyPlayer[197:5c07] PTS: 22444.888672(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.833 MyPlayer[197:5c07] PTS: 22484.511719(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.871 MyPlayer[197:5c07] PTS: 22524.289062(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.913 MyPlayer[197:5c07] PTS: 22565.177734(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.954 MyPlayer[197:5c07] PTS: 22604.734375(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:53.998 MyPlayer[197:5c07] PTS: 22644.023438(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.037 MyPlayer[197:5c07] PTS: 22685.244141(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.074 MyPlayer[197:5c07] PTS: 22724.599609(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.124 MyPlayer[197:5c07] PTS: 22764.044922(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.156 MyPlayer[197:5c07] PTS: 22804.490234(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.197 MyPlayer[197:5c07] PTS: 22844.156250(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.244 MyPlayer[197:5c07] PTS: 22884.023438(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.278 MyPlayer[197:5c07] PTS: 22923.511719(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.318 MyPlayer[197:5c07] PTS: 22964.177734(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.378 MyPlayer[197:5c07] PTS: 23004.445312(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.407 MyPlayer[197:5c07] PTS: 23044.111328(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.445 MyPlayer[197:5c07] PTS: 23084.378906(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.485 MyPlayer[197:5c07] PTS: 23124.000000(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.525 MyPlayer[197:5c07] PTS: 23164.066406(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.566 MyPlayer[197:5c07] PTS: 23204.623047(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.613 MyPlayer[197:5c07] PTS: 23243.734375(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.667 MyPlayer[197:5c07] PTS: 23283.888672(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.707 MyPlayer[197:5c07] PTS: 23323.089844(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.739 MyPlayer[197:5c07] PTS: 23364.355469(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.778 MyPlayer[197:5c07] PTS: 23403.623047(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.819 MyPlayer[197:5c07] PTS: 23444.734375(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.866 MyPlayer[197:5c07] PTS: 23484.044922(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.900 MyPlayer[197:5c07] PTS: 23524.111328(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.942 MyPlayer[197:5c07] PTS: 23564.957031(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:54.947 MyPlayer[197:5c07] PTS: 23603.957031(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:54.987 MyPlayer[197:5c07] PTS: 23643.134766(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.023 MyPlayer[197:5c07] PTS: 23684.333984(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.064 MyPlayer[197:5c07] PTS: 23723.156250(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.146 MyPlayer[197:5c07] PTS: 23762.867188(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:55.149 MyPlayer[197:5c07] PTS: 23807.623047(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.230 MyPlayer[197:5c07] PTS: 23882.867188(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.275 MyPlayer[197:5c07] PTS: 23923.667969(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.315 MyPlayer[197:5c07] PTS: 23963.623047(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.354 MyPlayer[197:5c07] PTS: 24003.556641(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.389 MyPlayer[197:5c07] PTS: 24044.333984(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.431 MyPlayer[197:5c07] PTS: 24083.466797(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.471 MyPlayer[197:5c07] PTS: 24123.822266(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.511 MyPlayer[197:5c07] PTS: 24165.177734(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.551 MyPlayer[197:5c07] PTS: 24204.000000(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.592 MyPlayer[197:5c07] PTS: 24243.466797(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.637 MyPlayer[197:5c07] PTS: 24284.333984(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.674 MyPlayer[197:5c07] PTS: 24323.845703(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.714 MyPlayer[197:5c07] PTS: 24363.111328(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.754 MyPlayer[197:5c07] PTS: 24404.490234(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.795 MyPlayer[197:5c07] PTS: 24447.066406(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.836 MyPlayer[197:5c07] PTS: 24482.511719(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.877 MyPlayer[197:5c07] PTS: 24524.023438(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.917 MyPlayer[197:5c07] PTS: 24563.400391(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.958 MyPlayer[197:5c07] PTS: 24602.644531(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:55.998 MyPlayer[197:5c07] PTS: 24643.355469(Duration : >>>>>> 40.000000) Bufferred: 3640.00 >>>>>> 2014-04-29 12:26:56.048 MyPlayer[197:5c07] PTS: 24682.978516(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> 2014-04-29 12:26:56.092 MyPlayer[197:5c07] PTS: 24722.644531(Duration : >>>>>> 40.000000) Bufferred: 3600.00 >>>>>> . >>>>>> . >>>>>> . >>>>>> . >>>>>> . >>>>>> >>>>>> Is this expected/valid? How can we handle such cases? >>>>> >>>>> Yes, most file formats store the timestamp in a way that requires >>>>> reordering. If the decoder you're using doesn't provide any means to do >>>>> the reordering, you could sort them, I guess. >>>>> >>>>>> Thanks and regards >>>>>> Abhishek >>>>>> >>>>>> >>>>>> On 30-Apr-2014, at 3:35 PM, wm4 <[email protected]> wrote: >>>>>> >>>>>>> On Tue, 29 Apr 2014 12:13:01 -0700 >>>>>>> J Decker <[email protected]> wrote: >>>>>>> >>>>>>>> On Tue, Apr 29, 2014 at 3:26 AM, Abhishek Maniyar < >>>>>>>> [email protected]> wrote: >>>>>>>> >>>>>>>>> Hello Everyone, >>>>>>>>> >>>>>>>>> I am trying to connect to RTSP using FFMPEG library in iOS. >>>>>>>>> >>>>>>>>> I am using TCP. Some times in poor network conditions, packets with >>>>>>>>> older >>>>>>>>> PTS received. Is it possible in FFMPEG to get a packet with PTS is >>>>>>>>> sequence >>>>>>>>> 10,11,12,13,7,8,9,….. Should FFMPEG not discard packets those are >>>>>>>>> older den >>>>>>>>> current packet? >>>>>>>>> >>>>>>>> I had the same sort of sequential PTS in some videos; another place to >>>>>>>> ignore that and use your own frame count based PTS... like MP4 clips >>>>>>>> come >>>>>>>> in ticks, mkv come in milliseconds in the PTS and some are sequential >>>>>>>> counts (avi) and even playing from disk I got backwards numbers >>>>>>> >>>>>>> Seems like you don't understand timestamps at all. >>>>>>> >>>>>>> First, PTS can go backwards on the packet level. This is because some >>>>>>> codecs reorder frames on decoding. Packet PTS are in encoded order, not >>>>>>> in display order, and the decoder will reorder the PTS to display order >>>>>>> for you (just like it reorders the decoded pictures). See AVFrame >>>>>>> fields for more info. >>>>>>> >>>>>>> Second, timestamps in ffmpeg are always relative to a timebase. The >>>>>>> timebase tells you in what units the PTS values are in. You just divide >>>>>>> the PTS by the timebase, and you get the time in seconds. The >>>>>>> demuxer will tell you the timebase; see AVStream.time_base. >>>>>>> _______________________________________________ >>>>>>> Libav-user mailing list >>>>>>> [email protected] >>>>>>> http://ffmpeg.org/mailman/listinfo/libav-user >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> Libav-user mailing list >>>>> [email protected] >>>>> http://ffmpeg.org/mailman/listinfo/libav-user >>>> >>> >>> _______________________________________________ >>> Libav-user mailing list >>> [email protected] >>> http://ffmpeg.org/mailman/listinfo/libav-user >> > > _______________________________________________ > Libav-user mailing list > [email protected] > http://ffmpeg.org/mailman/listinfo/libav-user _______________________________________________ Libav-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/libav-user
