Now if you had an evenly distributed number, that would playback smoothly. Some programs try to "smooth" it by inserting a blended frame instead of a pure duplicate, but then you get "strobey" blurry jerky playback. Thus you get little jerks in playback because of duplicate frames every 6th frame. Within the same timeframe, you add 4.99 frames every second. If the FPS changes 25=>29.97, but duration doesn't change, this means you have inserted frames. That's a total aside that doesn't apply here. I'm just trying to get what I want accomplished in the best way possible.Īlso, TMPGENC doesn't change the speed when changing the frame rate. However, in this case, it is 25fps video which is the same "tempo" as it originated, just a different frame-rate. You're doing this to make it work with a certain standard No I completely understand the need or interest in a change in speed to get it back to the original. North America)īlame the "unnaturalness" on the engineers and world standards. To get back the original - you slow it back down.ĭo you see this is the reverse situation? You have 50Hz produced (UK) video intended for 60Hz areas (e.g. There are more productions originating in North America/ Hollywood, it's a larger market, then sped up for 50Hz regions like the UK. Why would you slow something down to an unnatural level? Yes. My understanding is that the slow-down is wanted because it was originally sped-up. I don't know what TMPGEnc is actually doing, I just know there is no "smooth" way to get from 25 to 29.97, or without lots of artifacting
#TMPGENC AUTHORING WORKS 5 25FPS MANUAL#
It's typically only used for special shots with lots of manual tweaking, not an entire production There are other ways to re-time using optical flow (in between frames are generated), but it can be very problematic with nasty artifacts. With 24p, or 23.976p, you keep the original frames, nothing inserted or dropped, so playback is smooth (assuming the original was ok to begin with of course) Native progressive at 1920x1080 frame dimensions is supported at 24p and 23.976p. It's encoded "interlaced" PAFF, or MBAFF. Also for BD, 1920x1080p29.97 isn't officially supported. That makes playback no longer smooth because you have a non regular cadence - you get little jerks in the motion.
Usually a combination of frames, or blended frames are inserted. Think of how you are making up 25 => 29.97 frames. Slow down is used because it's better than the alternative(s). So in TMPGENC, when I change the framerate to 29.97, it changes progressive to interlaced, unless I perform a 2:2 pulldown. Doesn't need to be slowed down because it's video sourced material. Audio is slowed down too (+/- pitch shift). Everything is just slowed down to 23.976, so duration is longer.
#TMPGENC AUTHORING WORKS 5 25FPS PRO#
If you forget this and used the AC3 Studio encoder, DVDA Pro will always recompress the audio if your project is a Blu-Ray project since the AC3 Studio encoder is meant to be used with DVD Architect Studio, whose most recent version still supports only standard-definition videos.Usually a PAL slowdown would be done. Use the AC3 Pro encoder to render out the audio, using the "Default" template (with HDV-embedded audio, it's typically stereo, 48 kHz sampling rate and 384 Kbps-you should change the audio bitrate in the custom settings to 384 kbps since the default audio bitrate in stereo projects is only 192 kbps). With the Blu-Ray template, only the video gets rendered, so you must also render the audio separately. (And speaking of video recompression in DVD Architect, the program is not good at recompressing to MPEG2 while its AVC recompression is IMHO superior to either of the AVC encoders that are in Vegas itself.)Īnd as the previous poster stated, it would be best to convert 1440x1080i HDV files to the 1920x1080i Blu-Ray MPEG2 format in the main Vegas program if you want self-mastered MPEG2 Blu-Ray discs that meet the official Blu-Ray standards. This is because DVDA does not recompress video that's already compliant with the disc format (this means MPEG2 HD video clips with an average video bitrate of up to 28 Mbps) unless you force it to. If you left DVDA5 Pro at the default Blu-Ray settings (MPEG2, 18 Mbps), and you left your HDV files at 25 Mbps, then what DVDA5 Pro does is render the menus at 18 Mbps while leaving your HDV video untouched. I actually don't have a BD burner at the moment so can't do any of my own tests however have been editing/rendering/storing all my projects in HD for the last year, I want to prepair my projects for Blu-ray now so that when I get a burner and find some thermal printable discs that I can send them out. Jeff thank you for response! I'm currently encoding to MPEG-2 (quite happy with reduced encoding time), that's why 18Mbps seemed rather low.
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