Joining .ts files is always a/v out of sync

[PetitDragon]

Hi,

I found this wonderful site:

http://jpcmhd.tumblr.com/

It may be a stupid question but, I want to merge those short clips to a single .ts file. Unfortunately it is always a/v out of sync whatever apps (HDTV to MPEG2, tsMuxerGUI, ProjectX, etc.) I tried. Could you experts in this field give me solutions to solve this problem?

Thanks in advance.

[Baldrick]

Try videoredo and mpeg-vcr. Not free though but try the trials and see how they work.

[PetitDragon]

Try videoredo and mpeg-vcr. Not free though but try the trials and see how they work.

thanks. tried videoredo before, won't work. it is always "no PID" error when opening.

Will give mpeg-vcr a try.

[PetitDragon]

Womble mpeg-vcr doesn't even find the audio track.

[kaapo]

Try this. https://www.videohelp.com/tools/Smart_Cutter_Ps_Ts

[PetitDragon]

thanks kaapo. tried it before. it's still a/v out of sync after third clip. You could dl some small clips in that site and merg them to see.

[kaapo]

Use Avanti ( https://www.videohelp.com/tools/Avanti ) and convert ts-file to avi-file. Then you have a huge collection of avi-tools to operate. https://www.videohelp.com/guides/how-to-easily-join-avi-files-with-virtualdub-id374

[PetitDragon]

Hi kaapo, If convert ts-file to avi-file, it will hurt picture quality badly. Is there any other solution keeping .ts video tream untouched?

[kaapo]

The problem you have is in ts-files. Different audio/video bitrates. If you convert them to the same bitrates. All videofiles have same audioformat and bitrate. And all videofiles have same videobitrate. Then you have no problem any more when you have joined them together. Recheck your bitrate setting for video. Use Mediainfo ( https://www.videohelp.com/tools/MediaInfo )

[poisondeathray]

it's because the audio & video have different lengths (overhanging edges), so when you join them , they don't evenly fit flush with the next file

if you convert audio to ac3, videoredo will join them (lose audio quality, but at least you don't lose video quality)

what I did was use dgindex to demux audio & video (delay written into name of audio) , megui to encode audio to ac3 (audio delay offset automatically corrected when you input directly, because it's written into name), re-mux with tsmuxer, then videoredo to join

[PetitDragon]

@kaapo
@poisondeathray

Thanks for all your kindly helps. I see the culprits and it seems not a easy job to do.

Will try your suggested methods. Thanks again I learned a lot.