No timeline (elapsed time and duration) on .TS files

[sharbatgula]

Hi,

I'm transcoding a DVB-T mpeg TS, to low resolution h264/AAC and muxing to mpeg-2 transport stream. Then I'm recording the output with any of vlc, ffmpeg, multicat without any processing on the content, i.e. the recording is a .ts file. Unfortunately, VLC and Windows media player don't show the timeline, i.e. duration and elapsed time.
- If I record the original transport stream, the timeline is perfect.
- If I remux the transcoded recording to .mp4, the timeline is recreated.
- I tried to explicitly define mux=ts{pcr=80,pid-video=68,dts-delay=400}, with no effect.

This is indicating me that the ts mux is not providing enough information to create the timeline.

I'm using typically an encoding string based around:
:sout=#transcode{vcodec=h264,venc=x264{aud,profile=main,keyint=50,ref=1},vb=320,vfilter=deinterlace,fps=25,scale=Auto,width=354,height=288}:udp{mux=ts,dst=224.10.2.1:1234} :sout-keep

Can someone help, please?

Sharbat

[Jean-Baptiste Kempf]

I think the code needs to be fixed for that.

[sharbatgula]

Hi Jean-Baptiste,

Thanks for responding.
To add to my previous post:
- When only remuxing/saving with VLC, the timeline is there. If the elementary streams are touched, the timeline problem appears. It's interesting that ffprobe shows proper duration though.

Regarding the fix, is it likely that it will done soon? I'd like to help but serious programming is well beyond my league.

Regards,

Sharbat

[Jean-Baptiste Kempf]

Soon? I doubt it. You would need to file a proper bugreport and share the files.