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jrse63

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About jrse63

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  1. Hi, I originally thought that the time positions of the transition or key frames may have caused the problem. However, this is not the case. I am using a source and exported file frame rate set to 25 fps. My transition length was set to exactly 0.4 seconds, yielding 0.2s before and after the transition. This is exactly 5 frames before and after. I was also careful to set the transition point at an exact frame end/start point (I.e multiple of 0.04s from the start of the clip). The key frames were also set at exact frame endpoints. It is therefore not a rounding error. If a randomly chosen
  2. I am using the latest version of Videopad professional (v3.81), on a Windows 32 bit machine running Windows 7. The two faults have been present in previous versions too, and are easily replicated. Take any two clips, with movement so that each frame transition can be easily seen, and place them on the timeline (could also accomplish this by placing a single clip on the timeline and splitting it). If this simple sequence if exported, everything is fine. Now, firstly, if a simple fade transition is used between the two clips, everything appears fine on the sequence pane when step
  3. I have uploaded example exported file to demonstrate the issue. It is on YouTube at: The keyframe duplication/dropped frame issue can be clearly seen in the video which consists of two identical clips. The first clip has a keyframed hue effect added, the second clip is unedited. First clip clearly stutters. Second does not. You will have to download from YouTube to import into VP to check frame by frame. Interestingly, MediaInfo reports that at certain points in the video, it is exported at a half frame rate of 12.5 fps, rather than the requested 25 fps, resulting in an ov
  4. I don't think that HarryG is suggesting that he is having a problem with dropped frames or duplicated frames. He is confirming that when using the H.264 codec export option, that it is impossible to ensure a constant frame rate. Addition of blank clips, or stationary images to a sequence results in the exported file switching to a variable frame rate in an effort to minimise file size. Blank sections, for example, are rendered at a third the requested frame rate (e.g. at a requested rate of 25 fps, the rate is 8.33 fps). On average across the file, the frame rate is then less than that requ
  5. Follow up... I also tried hue cycle and rotate, as in your file, on my 25 fps clip. Same issue. Dropped/duplicated frame every 4 frames. I'll try and find a way to post a copy of my video clip (input/output) somewhere...
  6. I haven't, as yet, been able to check your findings, as you are using a 30 fps source file, which I do not have (I record at 25 fps, and any attempt at conversion produces incorrect frame rates). Also, I am not sure of your source file parameters: you say 30 fps NTSC, but what is the resolution? Is it 720p or original low definition NTSC TV? I am not performing any frame rate change at all in my export. My source file is: 25 fps (PAL), 720p, mp4, H264. (This is either an original file from my camera, or a VP produced file. In both cases I have checked in VP for dropped/duplicated frame
  7. After considerable experimentation, I can confirm that there is definitely an issue with the exported file rendering under certain, specific conditions. This is not due to any limitations of my PC (which should anyway surely affect only the speed of rendering, which is algorithm driven, not the actual output coding). I used a short, 2 second clip, both 720p and 1080p, mp4, with continuous movement within the clip. I tested your assertion, and agree that the output file showed no artifacts, duplication or dropped frames ,when the brightness or hue effect was applied across the whole cl
  8. I seem to have found the cause of the variable frame rate. If I add blank clips to my video sequence, Videopad renders the output file with a VFR. No blank clips = CFR. However, this is not ideal as many videos have intro and credit screens. The option to request a constant frame rate is definitely needed. There is a second, more critical issue though, which I originally thought was due to the VFR issue. Adding any form of video effect to a clip in the sequence (e.g. brighness, hue, etc.) causes multiple frame drops and frame duplication in the rendered file. This is a major problem
  9. Thanks for the reply. I will certainly download that program. However, I still want to know if Videopad will export constant frame rate or not, and if not, why not? Also, if my recorded clips are at a constant rate of 25fps, what maximum rate should I set videopad to export? Finally, what is the advantage of variable rate? Is it just so it can record fewer frames per second for slowly or non changing segments of video?
  10. I have version 3.61 for Windows, running on Windows 7. Everything works fine, but when I export a sequence to file, the dialogue box specifies a MAXIMUM frame rate. My original clips are 1080p, recorded at a fixed frame rate of 25 fps. If I specify 25 fps (PAL) for the output file, the resulting video, regardless of format (e.g. AVI, MP4) or codec (e.g. H.264, mpeg-2), will be written with a VARIABLE frame rate. Mediainfo will report the video as having a frame rate of anywhere between 8 and 25 fps, with an average of 23.8 fps. Now, upload sites such a Vimeo, have a preference for vi
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