Vegas does not playback Interlaced video? If so that is new to me.

Presumably you are referring to playing on your timeline. How it plays back will depend on your project settings but yes it should play.

I don't really understand your issue- feel free to create your own thread where you can fully explain it. You shared one file that didn't work well that was interlaced and then converted it to progressive after the fact? That's the part I don't get.

Yes Vegas supports interlaced files. Voukoder just follows project properties. For errors with Voukoder renders in my limited experience (as it usually works well), it may be something with the decoding of the source file, the computer overheating while rendering and the decoder getting out of sync as it throttles. I usually use it in x264 mode, not with hardware encoders.

MagicYUV works fine as well (I also have that installed) and don't see evidence it hinders any other codecs.

I see, the Voukoder interlaced render is completely corrupted when brought back into Vegas though it plays fine with a general media player. Interesting. That's not what I was thinking (or had seen before) with gaps or flashing black frames, or entirely missing footage. This is a special case for some reason. I don't think it's interlacing but rather something with the encoding settings. This is very different from the earlier cases we were looking at here.

The file is decoding with so4compound and that's using my Intel HD 630 iGPU on this system. With legacy AVC enabled it hardly plays back at all and is mostly black:

Eric thank you. Project settings are as they always have been. I have not seen this issue before. Although I did try changing the field order to no avail. And also using the match media function.

Roger thank you. As explained I converted afterwards (as I had a feeling that Interlacing may be causing an issue). The Voukoder / YUV was just thoughts. I added to this thread as I thought it may be a similar issue. (the symptoms are identical).

The video was originally shot on GoPro9 then rendered as mentioned using the same template I have used for a couple of years.

Anyway, no need for further replies.

The two videos are linked above if anyone is really interested to see if the first one will play (no matter what are the project settings). And also you will no doubt find that the video plays fine in any other standard media player.

My best, P.

Is this issue repeatable from the same source footage through Voukoder? Does it happen with just a straight MagixAVC/Mainconcept render? Unlike black frames, this is unusual.

Anyway if it happens again do make a thread and hopefully we can get to the bottom of it. GoPros are popular cameras, though I'm not sure if many people use them on interlaced timelines. If it's HEVC you could try both the non-legacy and legacy decoders and see if that makes a difference (file i/o tab under preferences).

Hi. This problem began with Vegas 18 with ANY Canon files. Same issues with 6D and my new 5R. This issue still does not exist with Vegas 17 and I (LIKE YOU) AM FRUSTRATED. Now it's almost Feb of 2022 and MAGIX has not found a solution that is actually over a year old. I'm pulling my hair out. Has anyone solved this? I have 10 core, 128 gigs of Ram, Windows 10.... No issues with any other type of file, 4K.... nothing. Please post if this has been solved for you. Thank you.

It does appear that if I set "Hardware Decoder" to OFF.... this Canon problem is SOLVED. But I'd sure rather use my NVIDIA card to decode. Does anyone have more input on this?? Thanks.