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Dave Rado

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Posts posted by Dave Rado

  1. I recently recorded an HD video, Tom Tit Tot Original.mp4, which I've uploaded for the purposes of this thread to Google Drive, here. It is uncompressed so is 3GB.

    Using Videopad I then removed a few seconds at the start and end of the video, added a title screen and exported it using MPEG compression, producing a 574k HD file, Tom Tit Tot HD.mp4, which I've uploaded to Google Drive here. I've uploaded the project file, Tom Tit Tot.vpj to Google Drive here.

    If I open Tom Tit Tot HD.mp4 on Google Drive, the preview screen that gets displayed before you click Play looks fine.

    However, I then uploaded Tom Tit Tot HD.mp4 to youtube, here.  The preview screen that youtube displays before you click Play looks absolutely horrible - blurred and bitmappy in the extreme - as if it were a 140p image, despite the fact that the video itself is very sharp if you play it on youtube in HD.

    Can anyone help me get to the bottom of what's causing the preview frame that youtube displays to be so awful - and how to prevent that from happening?

    I've noticed that quite a lot of youtube videos display a preview screen that has a much lower res than the resolution of the video that is being previewed, but I haven't seen any other youtube videos with a preview screen that is anywhere near as low resolution or bitmappy as mine is; and I've seen some that have a very sharp preview screen indeed. So I'm presuming that there must be something in my file Tom Tit Tot HD.mp4 that is causing the youtube preview to be so awful and that there must be some way of getting youtube to display a sharp preview screen. Can anyone help?

    Also, youtube seems to be picking a frame at random from the middle of the video to use for the preview screen. Is there any way of controlling which frame it uses? The frame that Google Drive uses (which it also has taken from somewhere in the middle of the video) is a much more complementary one than the one that youtube uses.

    Many thanks for any help you can give me. It's the first video I've ever put on youtube, so this awful preview screen has been a real shock and disappointment to me.

    Dave

  2. Many thanks, borate - that was the solution! Not at all user friendly, and I don't know how anyone who's not an IT wizard could be expected to work that out on their own, but the product itself works great, it's just the interface that could be a lot more user-friendly. I'll feed back to the developers when I get a bit more time. in the meantime, many thanks for your help.

    By the  way, if I choose the option to save it to Youtube, which involves giving Videopad access to my Google account, is that definitely 100% safe?

    Dave

  3. Hi again borate

    I recently got a higher spec laptop and recorded a 12 minute FHD version of the same folktale at 30fps. The mp4 that was produced was 3.2GB which seems ridiculously large for a 12 minute video, even though it is in FHD.

    I assumed that if I exported it using Videopad the file size would go down dramatically as it did when I exported the previous 720p recording that you looked at earlier in this thread, but it didn't and I don't understand why.

    The original 3.2GB FHD recording, Tom Tit Tot Original.mp4 is here.

    I used Videopad to remove a few seconds at the start and end of the recording and to add a title screen, using the project file Tom Tit Tot.vpj, which I've uploaded to here.

    I first tried exporting it as a lossless video and the file size of the  resulting mp4 file was 3.17GB, which is what I'd expect.

    But I then tried exporting it without choosing the lossless option but choosing the settings that Videopad's export dialog defaulted to (1920 × 1080, 30fps), expecting the resulting mp4 to have a file size of less than 1GB (given that the compression algorithm that Videopad used when saving the previous 720p video that we discussed earlier in this thread had reduced the file size of that recording by a factor of three compared with the lossless version of the same project).

    However, with the FHD recording, using the export video dialog instead of the lossless video dialog produced an MP4 file of exactly the same size as the lossless version - 3.17GB. I've uploaded the file, Tom Tit Tot HD.mp4, to here

    Have you any idea why Videopad is failing to compress the clearly bloated FHD video, when it was so effective at compressing the 720p video? Are there any settings I should have changed in the export dialog in order to get its compression algorithm to work effectively?

    Using the same project file I then tried exporting the same project in 1280 x 720 resolution at 30fps - and that produced a 432MB MP4 file, which is much more like it. The difference in file size between a 1920 × 1080 version of a project and a 1280 x 720 version of the same project shouldn't be a factor of 7.3, which is what it is. Clearly Videopad is compressing the HD version effectively but is failing to compress the FHD version.

    What am  I doing wrong? 

    Dave

  4. Hi borate

    Sorry it took me so long to reply. All is as you say - many thanks.

    However, part of the problem was the fact that the estimated file sizes displayed in the export video dialog are so incredibly misleading, as a result of which I didn't select the options I should have selected because I was put off by their incredibly innacurate estimated file sizes. If reasonably accurate estimates can't be made, it would be far better for it not to give estimates at all. Please could this be fed back to the developers?

    Also, it's not obvious to me (as a layman who doesn't really understand video at at technical level) why increasing the resolution and/or frame rate would actually reduce the quality. I would expect the software to use some sort of clever interpolation to increase rather than reduce the video's quality - a bit like Photoshop does if you resample an image to a higher resolution. Given that increasing the resolution and/or frame rate actually reduce the quality of the video, I don't understand why the developers have made the option to do so available, as no one would ever use that option if they knew they'd get both reduced quality and a larger file size! I think the developers should remove the option altogether to increase the frame rate and resolution, but at the very least they should display a warning if you attempt to do so, that doing this will reduce the quality of the video as well as increasing its file size! Please could this also be fed back to the developers?

    One final question: given that exporting it using the video's original resolution and frame rate results in an mp4 file with a file size less than a third of the file size that exporting lossless video results in, and yet with no discernable loss of quality, do you know how it does that? I.e. do you know what it is doing in order to reduce the file size by so much without reducing the quality? Is it just using a far more efficient compression algorithm than was used by the program that created the original video? 

    Many thanks again for your help.

    Dave

  5. I originally posted this by accident in the Wavepad forum, but it is a query about Videopad, not Wavepad.

    I recorded an 878MB MP4 file called "Tom Tit Tot Original.mp4" (which  I have uploaded to Google Docs here). 

    I then opened the mp4 file in Videopad, and in the storyboard pane I deleted the last couple of seconds of the video, saving the project as "Tom Tit Tot.vpj"  (which I have uploaded to Google Docs here).

    I then tried exporting the resulting video as an mp4 - but no matter what settings I selected in the "Export File Settings" dialog, the file size of the resulting video was dramatically smaller than the file size of the original video, even though the exported video was less than 2 seconds shorter than the original one in terms of playing time - and the quality was noticeably inferior to the original (as you'd expect given the much smaller file size.)

    The largest file size and best quality video I could get was by selecting "HD 1080p" in the "Preset" drop-down of the "Export File Settings" dialog. Doing this produced a 281MB mp4 file  - a third of the size of the original file - even though in the "Export File Settings" dialog it said the estimated file size of the exported file would be 832MB! I named the exported file "Tom Tit Tot.mp4" and have uploaded it to here
     

    If instead of selecting "Export Video" on the File menu I selected "Export lossless video",  then in the "Export File Settings" dialog, the "Estimated file size" it displays is only 49.37MB!! Because of this I didn't think of trying to actually export using this method, because I assumed the dialog's estimate would be reasonably accurate.

    However, after accidentally posting to the wrong newsgroup last night, I did try using the "Export lossless video" option instead of the "Export Video" one, and lo and behold it exported an 891MB file with the same quality as the original 
     

    So I have a solution to my original problem now, but I still have two outstanding questions:

    1) Why is the  "Estimated file size" in the  "Export File Settings" dialog, when one selects "Export lossless video", so incredibly inaccurate - nearly 20 times smaller than it should be?

    2)  Why does selecting "Export Video" and then selecting "HD 1080p" in the "Preset" drop-down of the "Export File Settings" dialog (which is actually a higher resolution than that of the original file) produce an exported MP4 file  with a third of the file size and significantly reduced quality compared with the original?

    Many thanks in advance for any help you can give me.

    Dave

  6. I have just selected "Export lossless video" again and this time it exported an 891MB file with the same quality as the original - although in the "Export File Settings" dialog, the "Estimated file size" it displayed was only 49.37MB!!

    So maybe I misremembered, and when I tried that method before I was put off by the estimated file size that it displayed and therefore didn't actually export it that way in the past after all.

    So I have a solution to my original problem now, but I still have two outstanding questions:

    1) Why is the  "Estimated file size" in the  "Export File Settings" dialog, when one selects "Export lossless video", so incredibly inaccurate - nearly 20 times smaller than it should be?

    2)  Why does selecting "Export Video" and then selecting "HD 1080p" in the "Preset" drop-down of the "Export File Settings" dialog (which is actually a higher resolution than the original file) produce an exported MP4 file  with a third of the file size and significantly reduced quality compared with the original?

    Dave

  7. I recorded an 878MB MP4 file called "Tom Tit Tot Original.mp4" (which  I have uploaded to Google Docs here). 

    I then opened it in Videopad, and in the storyboard pane I deleted the last couple of seconds of the video, saving the project as "Tom Tit Tot.vpj"  (which I have uploaded to Google Docs here).

    I then tried exporting the resulting video as an mp4 - but no matter what settings I selected in the "Export File Settings" dialog, the file size of the resulting video was dramatically smaller than the file size of the original video, even though the exported video was less than 2 seconds shorter than the original one; and the quality was noticeably inferior to the original (as you'd expect given the much smaller file size.)

    The largest file size and best quality video I could get was by selecting "HD 1080p" in the "Preset" drop-down of the "Export File Settings" dialog. Doing this produced a 281MB mp4 file  - a third of the size of the original file - even though in the "Export File Settings" dialog it said the estimated file size of the exported file would be 832MB! I named the exported file "Tom Tit Tot.mp4" and have uploaded it to here

    If instead of selecting "Export Video" on the File menu I selected "Export lossless video", which one would expect to produce a file of identical quality and almost identical size to the original, the file size was even smaller and the quality even worse than it had been when I had selected "Export Video" and had chosen the "HD 1080p"  preset.

    What is going on and is there any way of exporting an MP4 file that has been edited in Videopad that is the same quality and has more or less the same file size relative to its playing length as the unedited mp4 file?

    Many thanks in advance for any help you can give me.

    Dave  

     

  8. I'm surprised no one has yet answered my above question as I have now managed to find the answer for myself in another thread, here.  It seems that the Show Different Channels Separately button was only introduced in version 8.42 of WavePad - and as I stated in my original post I had v6.38.

    So I have now upgraded to the latest version (9.63), but although I now have a Separate Channel Editing button, I can't seen any way to copy the waveform from one channel to the other, which was my only reason for wanting to have Separate Channel Editing functionality.

    I have somehow made a recording which has recorded on one channel only - maybe my microphone wasn't fully plugged in when I made the recording, I don't know. But apart from the fact that it has only recorded on one channel , it's a good recording, and very important to me, so I urgently need to copy the waveform from one channel to the other, so that the sound will play out of both speakers and not just out of one. Surely this must be possible? But I can't see any way to do it. Please could someone help urgently.

    Thanks

    Dave

  9. According to your web page here, I should have a Separate Channel Editing button below the waveform, near the Show Different Channels Separately button - but I don't. I have a Show Different Channels Separately button, but there is no Separate Channel Editing button. How can I get it to appear? I have a paid for licenced copy of Wavepad Masters Edition v6.38.

    Dave

  10. I've just tried converting the MP4 to a DVD without using a menu and I get exactly the same problem.

    I've also tried converting the MP4 to an ISO file and then using different burning software to burn the ISO file to the DVD - but again I get exactly the same problem.

    And yet if I convert the same MP4 file to DVD using a different software package, it plays perfectly on my DVD player.

    So how can I fix this problem with Express Burn?

  11. I've just created my first DVD using Express Burn, by selecting Video DVD, clicking Add File, adding a menu and then clicking Burn Video to DVD. The resulting DVD plays okay on my PC's DVD ROM drive, but not on my DVD Player (i.e. not on my standalone DVD player that is attached to my television.) DVDs written with other DVD burning software do play fine on my DVD player. Any idea what could be going wrong?

    Dave

  12. Hi Borate

    Regarding Prism, it doesn't rip protected DVDs, which is perfectly legal if it's for personal use and/or if one has the publisher's permission (which I do have). And as far as I can tell, Handbrake is only available for 64-bit versions of Windows, whereas I have Windows 7, which is 32-bit. 

    In the end I got the original MP4 files from the publisher, from which they had created the DVDs, and I edited those in Videopad - and I can confirm that I was able then to edit them (removing the unwanted sections) without any synching problems resulting. Many thanks for your help with troubleshooting that problem.

    However I have now another problem.  The original DVDs - and also my edited MP4 files after being burnt to a DVD - play in widescreen format when I play them on my DVD player through my widescreen television; but two out of three of them (it's a three  part series) play on my PC with a 4:3 aspect ratio by default, and they then look severely distorted, as the picture is actually meant to be displayed with a 16:9 aspect ratio.

    I can get round this in VLC media player by changing the aspect ratio when playing the video to 16:9 ; and as I say my DVD  player automatically plays it with a 16:9 aspect ratio. However, if I try to add a menu to it using Nero Video, even though I use a 16:9 image as the background image, Nero Video sees that the video has a 4:3 ratio, so it crops my background image to have a 4:3 ratio, and when this then plays in widescreen it looks distorted.

    So I want to convert the MP4 to have a 16:9 ratio, which is the ratio it should have. I don't know why the publisher's MP4 files have one episode with the correct aspect ratio and two with the wrong ratio, but that's all they have - and they do all play with a 16:9 ratio when played on a DVD player rather than on a DVD ROM drive on a PC. 

    The one MP4 they gave me (episode 3 of the series) that plays at the correct aspect ratio by default on a PC has a frame width & height of 720 x 574. The other two episodes both have aspect ratios of 704 x 576.

    Is there any way I can convert the MP4 in Videopad to have the correct aspect ratio? I tried exporting my edited video and using the setting "Auto match content but force 16:9" but that makes things much worse - it still displays a square image rather than a widescreen one, but it now can't be changed to a widescreen image when playing it in VLC and it no longer plays with the correct aspect ratio on my DVD player - in other words, it hasn't actually resized the image to the required aspect ratio - instead it's just put the square image onto a black widescreen background!

    So is there any way I can convert the aspect ratio of the videos' images of the two episodes which have the wrong default aspect ratios on a PC, to what they should actually be (which is 16:9)?

    Dave

  13. Thanks Borate

    1)The file you uploaded works much better in terms of the syncing, but it's nowhere near as sharp as the original video was; and I notice the file size is a lot lower (the original file was 370MB and the one you sent me was only 242MB). Is that an inevitable consequence of reworking it at a constant frame rate?

    2) Also, I assume the anomalies you refer to must have been created by the software I used to rip the DVD with - so do NCH sell a good DVD ripping program? Or could you recommend one? I don't have much money but I need one that can (a) rip PAL DVDs and maintain their original frame width and height (some I've trialed such as Filmora change the aspect ratio when ripping PAL DVDs and produce a distorted picture in the resulting MP4); and (b) if at all possible, one that can rip DVDs that don't have the same region as my laptop is set up for. 

    Dave

  14. I am trying to edit out some sections of a 50 minute documentary in Videopad (with permission from the producer), but when I open the MP4 file in Videopad, the video and audio are slightly out of sync - despite the fact that if I play the same MP4 file in any standard media player, the sound and video are in perfect sync.

    I thought it might just be a problem with Videopad's preview so I tried using the method described here in order to cut out the sections that need to be deleted from the video, and I then exported the resulting project as a new MP4 file.  But in that new MP4 file the sound and video were slightly out of sync when played in any standard media player - whereas in the original MP4 file before deleting the unwanted content from it in Videopad, the sound and video are perfectly in sync.

    I then tried getting the sound and video into sync by importing the new MP4 file into Videopad, and synchronizing it using the method described here. However, if I get it in sync at the start of the video, then it's out of sync at the end of the video - and vice versa.

    Is there any way to get this to work with Videopad?

    Dave 

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