![]() If you or someone could look at my logs and tell me why I'm getting VFR instead of CFR on my output clip it would be very helpful! This is my output file and the logs from Handbrake. Just endoded that same 1 minute test clip to High Profile + CFR + 1280x720 resolution. The log file (Encode Log tab) even specified how many frames it expected to find, how many it did find, and how many it had to duplicate to output a CFR of 25fps. Each time the Handbrake output totalled 36355 frames. Once using "same as source" for the framerate, the second time using 25fps, both times selecting CFR. I ran the same video through Handbrake twice. The duration in MeGUI's preview stayed the same but the frame count increased to 36355. I then told ffmsindex to convert it to 25fps. I found a video which is reported to be CFR by MediaInfo (25fps) and opened it with MeGUI, which showed the total number of frames as being 36317. It's very detailed and the chances are if you go through it carefully enough you'll find something which tells you exactly what's going on. If the original video was VFR in places, or if there is (enough) repeated frames, the output MKV will likely have video/audio sync issues.Īll I can suggest (given my theory seems to have gone out the window) is going through the log file after an encode, specifically the log file under the "Encode Log" tab. This time the output MKV should definitely be CFR. ![]() Then repeat the process but this time specify the frame rate (whatever the original frame rate might be). The video/audio sync for the new MKV should be fine. PS One way to check the source video might be to open it with MKVMergeGUI, add the audio (if it was extracted as a separate file) and resave it as a new MKV without specifying a frame rate. Until then, it's at least a possible explanation. so later on I'll try re-encoding one with Handbrake to see if I'm on the right track. ![]() some old (apparently CFR) TV captures which gave me grief when trying to re-encode them with MeGUI until I worked out what was happening. I can't at the moment, but I have Handbrake installed and I'm pretty sure I can easily find a source video with repeated frames. well it's probably a good thing and at least it's telling you in a round about way. Or maybe if for some reason a frame can't be decoded, Handbrake changes the duration of the proceeding frame to compensate. The output video could in fact effectively be CFR, but within the CFR video there's a few repeated frames which make it VFR. I don't use Handbrake much myself, so I'm taking a guess, but maybe if there's a problem along those lines and the output video includes repeated frames because the input video does (a frame with twice the usual duration, as opposed to two identical frames in a row), Handbrake outputs it as VFR regardless of the setting. Any mention of frames which weren't decoded, or repeated, or dropped, or anything similar? Have a look in Handbrake's log file after running one of those encodes which result in VFR. I usually get file sizes from 1.5 GB to 2.1 GB per episode which is a pretty good balance in quality/file size for me. I'm ripping my Battlestar Galactica bluray box set to mp4 (CQ 20 720p video, 2.0 and 5.1 audio tracks, chapters, mp4 container) that should yield pretty high compatibility between the various devices out there. If anybody wants to export and upload their favorite presets that would be good. I am running an encode right now-will check for results. And I have been saving my own presets based on different tests I have run. I tried selecting 23.796 instead of "same as source" but came up with the same thing. ![]() Saving your own customized presets will also help to alleviate said issue. ![]() Selecting CFR and then fiddling with the presets and/or framerate can reactivate VFR. Specifying a preset and a fixed framerate then selecting CFR always produces CFR based output in my experience. If you want to be sure to obtain a CFR encode, do not use 'Same as source' for the framerate. ![]()
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