Stuttery/jittery frames in encoded video in Handbrake

[techmot]

Hi, I was capturing an old home video VHS tape yesterday to my PC using my Hauppauge USB capture device and using AmarecTV as the capture programme. Most of my tapes are, due to bad storage and wear and tear, are pretty poor and do suffer from jumping and tracking problems (though the basic Bush VCR I'm using doesn't help as it's not got a very good tracking system on it, and no TBC or anything like that). I captured around 25 mins of the tape as a raw capture. Using Handbrake, I used the h.264 encoder and set the quality on the scale to lossless and the audio to AAC 320kbps (no option for passthru). But when I played back the file, at certain points the frame freezes or stutters for a few seconds. I checked the original raw capture in the same place and this freezing isn't there. I encoded the file again, this time setting video bitrate to 9000kbps, but again, this freeze stuttering is still present in certain parts of the capture.

Anyone know if this a Handbrake issue or an issue with the capture?.

[Sharc]

Bitrate peaks may be too high for your player with lossless x264 encoding. Compress your video by setting RF to 18 for example, and/or denoise it.

[techmot]

Bitrate peaks may be too high for your player with lossless x264 encoding. Compress your video by setting RF to 18 for example, and/or denoise it.

Yeah I tried setting it to RF 18, and yes the jittering doesn't appear this time on the outputted file. I've used the lossless option many times in Handbrake but haven't noticed this issue before. I couldn't see any denoise setting though.