Retrospectively check if One Pass or Two Pass Encoding was used?

[BenjaminBS]

Dear all,

Is there any way to check if a video was one pass or two pass encoded?

Thanks,
Benny

[manono]

Maybe. What's the video format? Check a graph of the bitrate or Q. Are you talking about CBR 1-pass or VBR 1-pass for a specific Q?

[BenjaminBS]

The video format is mp4 wrapping H264 MainConcept, VBR, 1536 lbps, long Gop.

[manono]

Well, Bitrate Viewer can tell between one pass CBR encoding and VBR encoding. It doesn't have a Q scale, so it can't tell if the VBR is one pass or multipass.

[BenjaminBS]

Thank you. I know Gspot and MediaInfo, but noone tells me if a video has been ecoded single or two pass.