Convert ProRes to H.264 on a PC?

[madmartian]

I tried Handbrake and it tried, but the pans became quite jerky. Is there a tool that does a better job of converting Apple ProRes format to H.264 on a PC? Or is there some setting in Handbrake that might fix the jerky pans? I tried a quality setting of 12, which still created a large file at 43 Mbps, but still jerky pans.

[poisondeathray]

I tried Handbrake and it tried, but the pans became quite jerky. Is there a tool that does a better job of converting Apple ProRes format to H.264 on a PC? Or is there some setting in Handbrake that might fix the jerky pans? I tried a quality setting of 12, which still created a large file at 43 Mbps, but still jerky pans.

The quality setting and bitrate should have nothing to do with a jerky pan . If anything , a higher bitrate might cause stuttering

What was the ProRes file specs? was it interlaced , etc ? Resolution? Did you deinterlace in handbrake ?

Could it be a playback problem? What are your computer specs ? What software player are you using ? Can you try another player (e.g. mpchc, potplayer, splash, vlc etc...)

[madmartian]

I've had this problem with more than one ProRes file. These are 1080p files, no interlacing or de-interlace settings. They tend to start with a high bitrate of 100+ Mbps. I am cutting the bitrate down close to bluray of 35 Mbps.

Not a player or computer problem.

[poisondeathray]

Did you encode CFR in handbrake?

What does mediainfo (view=>text) say about the prores file and the output file ?

[madmartian]

Example:
Input: ProRes, 111 Mbps
Output: AVC, 43.6 Mbps

Framerate is VFR. I will try CFR. Didn't think of that. Thanks.

[madmartian]

No change with CFR.

I also tried setting Anamorphic to None.

I haven't touched anything on the "Advanced" tab.

[poisondeathray]

Neither, the advanced tab or anamorphic settings will affect playback for a jerky pan

In mediainfo, debug=>advanced mode, look at the frame count, does it match the prores file? Does everything else match in terms of frame rate ?

[madmartian]

Yes, both are at 23.976 and framerate was set to "same as source" in handbrake.

Now here's an odd thing - size is NOT the same! MOV is 1888 x 1062, MP4 is 1920 x 1080. Weird thing is that Handbrake claims the MOV source is 1920 x 1080... If I set Anamorphic to None I can edit the size, but if "keep aspect ratio" is selected, the size if off by 6 pixels in the height when I force the width to 1888. Trying it with the box unchecked now at 1888 x 1062, but why doesn't Handbrake properly recognize the size?

[madmartian]

And manually changing the size had no affect.

[Selur]

Got a small sample where this problem can be reproduced?