Interlacing still visible on DVD?
Hi all,
Been pulling my hair out for too long, so requiring assistance. I’ve burned an MPEG2 video to the DVD, however when I play it on the television the combing is still apparent. See below for the process, and if there’s something I’ve done wrong please let me know. Video is PAL. 1. VirtualDub Video is captured into Lossless AVI. Source is PAL, interlaced, 720x576, 25FPS read through S-VIDEO. Overlay mode is selected for viewing. Total time: ~70mins 2. Avidemux 2.5.6 AVI is opened, settings below are set and then saved as <video_name>.mpg. Two other files are generated which I assume are not required - .stat and .qs. Video settings MPEG-2 (mpeg2video)
Audio Settings AC3 (Aften) Bitrate = 384 Format MPEG-PS (A+V) Muxing Format = DVD 3. Simple DVD Creator Click Video >>, then select <video_name>.mpg. It splits into two files .m2v and .ac3. Titles: Title 1: Video: <video_name>.m2v Audio: <video_name>.ac3 Click “Author DVD”, select folder on Desktop. Two folders are created (AUDIO_TS and VIDEO_TS). 4. ImgBurn
Thanks all. |
Interlaced was always intended to be displayed interlaced because that's what it is. I believe the DVD format is natively interlaced so there should be no problem there. Problems can come when the DVD's output is converted to progressive. In NTSC, interlaced is not 30 frames per second but 60 "fields" per second, the higher rate of 60 fields (half frames if you like) giving it a smoothness to the eye that a progressive 30 FPS could never give. There's really no way to truly "deinterlace" interlaced if by that we mean converting it to progressive.
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For some reason I incorrectly thought that when it was said the television should display interlaced footage better than the laptop, that the interlacing would not be visible, or as apparent, at all. I'll have to compare the two side-by-side to see the difference. |
Your MPEG-2 video is Interlaced TFF (TOP field first)
Is the DVD output BFF? (BOTTOM field first) I believe this would cause issues. |
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Have a read of this post over at VideoHelp. AVIDemux is up to version 2.8.1 now. |
That old version of Avidemux is a strong contender for your problems.
Getting that version to create an interlaced mpeg2 was, for me, damn near impossible. Maybe 1 time out of a dozen, the other 11 times it was progressive. New version is rock-solid. |
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Will report back if it works! Thank you :congrats: |
VHS does not have a TFF or BFF. That's determined by the card. DV is BFF, everything else is TFF.
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I just encoded a VHS capture to MPEG 2 in AVIDemux 2.8.1 and it comes out Interlaced.
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Also decided to test with ffmpeg on the command line, but I didn't see much of a difference between the two when played on the computer. Someone with more experience on both could probably chime in here. I did initially try and keep the pixel format as yuv422p, only to realise it's not DVD compliant :smack: Command used was: Code:
ffmpeg -i MOVIE.avi -target pal-dvd -flags +ildct+ilme -alternate_scan 1 -top 1 -vf setfield=tff -aspect 4:3 MOVIE.mpg Code:
-f dvd -muxrate 10080k -packetsize 2048 Tested fine with Simple DVD Creator. Worked also with DVDStyler, bitrate set to Auto and within video settings ticked "Do not remultiplex/transcode". Hope some of the above helps someone! |
The 2.5.6 issues weren't present when the guide was made, with the download at the time, with Win7. In fact, attempting to encode MPEG in 2.6 and 2.7 was what had failed badly.
So we have two possible answers for why: - The download later changed, even though still 2.5.6. Not as likely, but possible, especially with GUIs -- ie, the underlying libraries changed, but not GUI - Something in later Win releases messed with something. And that may be likely, since Avidemux is just a GUI, and their can be unforeseen consequences in how the underlying programs react to the OS. I verify MPEG interlace in a CRT with DVD player, so I didn't miss an interlace issue. I hate interlace issues. Moving forward, using 2.8 is probably the right approach here. I'll make updates where needed, when time allows. |
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As others have said, thanks again for continuing to do this type of work 20 years down the line. It helps people like myself who are late to the game. |
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