Rendering with x264vfw in Vegas13 - first second of rendered vid is frozen?

[skribby]

I just installed x264vfw and am trying to render in Vegas13 Pro.

The rendered video ends up having the first second frozen. But the runtime of the video is the same which means the last second of the video ends up being cut off.

Not sure how to troubleshoot this....

[jagabo]

First render uncompressed or with a lossless codec and verify the problem isn't in Vegas.

Then try:

Enabling the VirtualDub hack.

Enable Zero Latency.

Output to an h.264 elementary stream instead of AVI.

Disable b-frames (you'll get less compression).

Combinations of the above.

[skribby]

Thanks, a combo of zero latency and virtualdub hack worked.

But, how do I actually render it as an mp4 too? I noticed the vids are saved in the AVI container.

[jagabo]

VirtualDub has the ability to use external encoders and muxers. There are threads around here with instructions. For example:

https://forum.videohelp.com/threads/367446-Virtualdub-External-Encoder-feature

[skribby]

Are you referring to frameserving from Vegas to virtualdub and then rendering in mp4 x264 with vdub?

[jagabo]

Oh, sorry. I forgot you are rendering from Vegas, not VirtualDub (most people using x264vfw use it with VirtualDub). I don't use Vegas so I don't know how to get to to render to MP4 with x264vfw.

[shekh]

x264vfw has output option to write mp4, but then you have to handle audio separately.

[jagabo]

x264vfw has output option to write mp4, but then you have to handle audio separately.

I had always assumed it only wrote elementary streams but, you're right, I just tested it and if you name the output file whatever.mp4 it creates an mp4 file. But since the OP will have to mux the video and audio later it may be easier to just write an elementary stream -- since most mp4 muxing tools require elementary streams as input.