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Nero Recode Puzzler.

I'm trying to change a movie mkv file to mp4 using Nero Recode. Thing is, when the job is done all Nero Recode has done is 16 minutes worth of the movie and not the full 1 hour 53 minutes. A second attempt was even worse, just 29 seconds.
Why won't Nero recode the entire movie ?
I'm using Nero 2018 and my OS is Windows 10.
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  • Hi Garry- Been a while.

    Do you have hardware acceleration enabled? If it is, you might try disabling it. If it's not, try enabling it.
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  • If I knew what you're talking about I'd be able to answer you.
    I don't even know what 'hardware acceleration' is and whether it is disabled or not.
    How do I find it ? Where is it ? How do I enable it ? And why would it be disabled in the first place ? :)
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  • Very briefly, hardware acceleration refers to hardware on your system which can aide in performing an operation rather than just using software on the CPU. In encoding, that generally refers to a discrete graphics card or, perhaps, a graphics chip on your motherboard.

    After you import a file into Recode and pick a format to encode to, there is a "to what quality" section on the center left hand side, If you have hardware that provides hardware acceleration, there will be a box which you can check or uncheck to enable or disable hardware acceleration.
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  • OK, I've followed your instructions and as far as I can make out I've chosen MP4 as the format to recode to and you'll see from the screenshot that the Hardware Acceleration box is checked. Thing is, this is the settings I had before and it didn't work. But I'll try again.
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  • OK, following your instructions the movie recoded fine. The only problem is that the movie now has additional audio - like a director's commentary type thing - which now takes precedence over the original dialogue. Where did that come from ?
    Also the original mkv file was 1.59gb, now it's a whopping 5.69gb. Why is that ?
    Also after selecting MPEG-4 shouldn't I be also selecting TV in the Home Entertainment options ? But it seems you can't select both.
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  • After importing your video, click on More Options. In the Audio tab, is more than one audio track listed? If so, you can opt not to use any particular ones you choose.

    Your original is H.265 (HVEC) which has a higher compression ratio (up to 50% more) than H.264 (AVC), thus the larger size of the output. You can set the maximum size of the recoded file in the "quality" settings. Not sure how they got H.265 out of a 1946 movie except that film has the same resolution (actually slightly higher than) as 4k.

    I don't know why you would need to select TV? What do you plan to do with the recoded file?
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  • The ultimate aim is to burn the movie onto disc and play it on my DVD player, that's why I'm wondering if I should be selecting TV.
    This 1946 movie is a 4K restoration and that is maybe why the audio is H.265 - whatever that is.
    If there is more than one audio track listed how will I know which one to deselect ? I mean, how will I know which one is the commentary ?
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  • HEVC is High Efficiency Video Coding. It's primary benefit is it's high compression ratio (that's also the benefit of mpeg-4). It is especially beneficial for the streaming of 4k.

    I don't see the benefit of that TV setting (I've never used it). As far as I can tell, it's going to burn mepg-4 for you (probably using AVC). Maybe I'll ask Nero about the benefit some day.

    If you want a disc that will automatically play in a DVD Player, you should simply burn a DVD-Video from Nero Video. Of course, the resolution will be 720x since that's the resolution on a DVD-Video. I don't know which audio track it will use. However, after importing the video into Nero Video, you can play it to see which track it's going to use.

    If you have a USB flash drive that is large enough, you could burn the original using the AVCHD, Memory Stick option in in Nero Video. Then plug the USB drive into your TV. That assumes your TV will play a blu-ray video (note that AVCHD is not blu-ray, per se, but requires a blu-ray player for playback. Again, I don't know which track it will use.

    In regards to Recode, I don't have a video with multiple audio tracks (that I know of) but I think the audio for the video would be AC3 or AAC whereas the narrative track might be in MP3. Have you looked in the audio tab when your video is imported?

    If you can use the controls on your TV to select a video file from a disc, you can burn the original to DVD in Burning Rom as a data disc.
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