WTV to MP4 using MeGui

[DOOM_NX]

Hello,

I've been trying to convert a captured DVB-T show using MeGui without success. I used Windows Media Center to capture the WTV file at 576i50. Then I tried muxing it into a TS using MC-TVConverter. Both WTV and TS files play fine on VLC and MPC-HC. However, after indexing with MeGui and during the AVS creation process, the frames appear corrupted and with the wrong order.

Please check the sample of the captured WTV below. Can you help me convert it to MP4 without issues?

http://www.sendspace.com/file/l175tv

Thank you in advance.

[davexnet]

Perhaps convert wtv to dvr-ms first? Seems as if dvr-ms is easier to handle.

You can convert in Windows 7 - Right click - convert to dvr-ms.

[DOOM_NX]

This is not allowed because the video stream is H.264/MPEG-4 AVC.

However, it seems that VideoReDo can do the trick with the "QuickStream Fix" tool. Now I can encode the streams with MeGui without issues. The only downside is that VideoReDo is not free :/

[usually_quiet]

Perhaps TS Doctor would also work for the correcting the time code errors which cause problems with MeGUI. It costs less than Video ReDo TV Suite H.264, but VideoRe Do TV Suite H.264 can import .wtv files directly while TS Doctor would require you to convert from .wtv to .ts first.

[_Al_]

Maybe there is a chance to demux it in VLC, if VLC can play it?

[DOOM_NX]

I was wrong... QuickStream Fix only works if you select a format that needs reencoding.

@_Al_: I don't know how to do this on VLC yet.

Can you guys download the sample and check really quickly what works for you? It's around 40 MB.

[somespirit]

demux (or convert) WTV file with this - http://mctvconverter.vivolum.net/ to TS file or something else then use megui

[DOOM_NX]

demux (or convert) WTV file with this - http://mctvconverter.vivolum.net/ to TS file or something else then use megui

I get blocky artifacts doing it this way. I don't know why.

[_Al_]

@_Al_: I don't know how to do this on VLC yet.

I don't know how to do it either, I tried to google something quick but no success, VLC uses command line so if you look into it you might find something. I tried stream/convert within VLC's gui but I got some green blocky artifacts trying to remux it into TS . (VLC 2.0.5)

[usually_quiet]

TS Doctor didn't solve your problem either.

The .wtv container itself is not the cause of your problem. Transport streams recorded from over-the-air or satellite transmissions are difficult to handle correctly because of the built-in error correction features which make them robust enough to use for those delivery methods.

[usually_quiet]

I just now tried VLC to play your sample .wtv file. The .wtv file contains an imperfection. There are green blocky frames at the beginning of the file.

VLC has a convert/save feature with .mp4 as one of the options. Have you tried VLC to convert your file to a .mp4?

[DOOM_NX]

I need the untouched video in order to deinterlace, crop and resize it in MeGui. I don't know how to setup VLC to get lossless video output.

Do I need to use a different software to capture the program? Is there anything I can do to use these WTV files?

[DOOM_NX]

It seems that Handbrake can handle these files just fine, so that's what I'm gonna use for now. I miss the AviSynth scripting but I can live with that.

[usually_quiet]

I need the untouched video in order to deinterlace, crop and resize it in MeGui. I don't know how to setup VLC to get lossless video output.

I meant for you to re-encode with VLC to produce an .mp4, but since Handbrake works, use it. Handbrake is undoubtedly a better choice.

VLC provides options that keep the original video and audio. You would use the "Edit Selected Profile" button (its icon shows a wrench and screwdriver) to access them, but doing that won't give you better input for MeGUI. Some frames are still out of sequence in the resulting .mp4 because the time codes in the original video and audio are out of sequence and simply copying them to a new container doesn't correct that. When I tried using a "lossless" .mp4 file as input for MeGUI, MeGUI could not even index the file.

[DOOM_NX]

Thank you once more.

I'd like to add what I found: Most of the time, after trimming the WTV file with VideoReDo, DGAVCIndex is able to decode the stream properly, so we can encode with MeGui.

In all cases, it seems one has to buy VideoReDo to work with WTV files...

[usually_quiet]

Thank you once more.

I'd like to add what I found: Most of the time, after trimming the WTV file with VideoReDo, DGAVCIndex is able to decode the stream properly, so we can encode with MeGui.

In all cases, it seems one has to buy VideoReDo to work with WTV files...

The problem is caused by what you are recording, not the .wtv file format. If you used different PVR software that stored recordings in .ts files or .m2ts files, you would still have the same issues when using MeGUI.

The built-in error correction features in digital TV and satellite broadcasts that compensate for corrupted or missing data make the streams recorded from these broadcasts harder to work with. MeGUI isn't designed to correctly handle the out-of-sequence frames that are often found in these recorded streams. Not many other programs can either. That is why some version of Video ReDo is nearly mandatory if you want to do anything more than watch the recordings from a PC digital TV tuner or PC digital satellite tuner.