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Subtitles won't burn to DVD

Posted: Sun Sep 04, 2011 6:11 am
by rafboy
Hi everyone.

I have an AVI file (PAL at 25 fps) that loads srt subtitles (also at 25 fps) into Quicktime (through Perian) every time I play the video. But when I encode (to NTSC 29.97 fps) then burn the AVI file to a DVD with Toast, the subtitles disappear. I've tried setting the track number of the subtitle to the same track number of the video (track 0) and applying an alpha channel for the subtitles- plays fine in QT but still no success when burning a DVD. This process used to work in the prior version of Perian- even when I would re-encode 25 fps PAL to 29.97 fps NTSC and burn a dvd.
I've even soft-coded the subtitles with iSubtitle and also hard-coded the subtitles with RoadMovie. I've also encoded the video files with ffmpegx after loading the subtitles- same story; plays fine in Quicktime, but subtitles don't get burned to DVD (plus, for some reason the audio is MUCH quieter).
I'm at my wit's end. Anyone have any fixes/suggestions/help?
Thank you in advance!

P.S.- I'm on a Mac 10.6.8, Perian 1.2.3, Quicktime Pro 7.6.6 (1709), Toast 10.0.8 Titanium, ffmpegx 0.0.9y

Re: Subtitles won't burn to DVD

Posted: Sun Sep 04, 2011 2:00 pm
by gbooker
rafboy wrote:Anyone have any fixes/suggestions/help?

I guess no one tries the search function anymore.

Re: Subtitles won't burn to DVD

Posted: Sun Sep 04, 2011 7:14 pm
by rafboy
I did try the search function ("subtitles dvd").
I don't see a fix applicable to my situation.
Subtitles burned to dvd about a week or two ago. Now they don't. The only difference is that I "upgraded" to Perian 1.2.3.

Re: Subtitles won't burn to DVD

Posted: Sat Sep 10, 2011 4:54 pm
by rafboy
Not to take away from the spectacularly helpful and illuminating tip proffered by admin (not to mention the concise brevity of said tip), but I found a couple of fixes that require Quicktime Pro (after days of exporting using Premiere, Compressor, Motion and FCP- with admittedly the most rudimentary knowledge):

Open your avi (or mov, and possibly your mkv) file in Quicktime Pro 7. Export for Apple TV. The subtitles should be burned onto the video track. The drawback is that you can't mess with the settings (and 5.1 48 Khz audio gets down-sampled to stereo 44 Khz), but the quality of the video is decent. The file extension becomes M4V, which Toast can burn to DVD.

Another method is to open the file in Quicktime. Go to "Show Movie Properties" under "Window". Select "Video Track 2", which contains the subtitles. Click on the "Visual Settings" and change the Layer of Video Track 2 to "0"- which is the same layer as the main video. Transparency should be set to "Premultiplied Alpha". ("Preserve Aspect Ratio" should be checked as well). Then export the file ("Saving As" won't work). Use your favorite compression settings. I used "Movie to Quicktime Movie" with H.264 compression; current Frame Rate; automatic Key Frames; Frame Reordering checked; Quality at Best; Encoding at Best Quality (Multi-pass); Data Rate at automatic. Audio settings I used were: Linear PCM format, channels (same as the source); Rate (same as source); Render Quality at Best; Linear PCM settings sample rate at 16 (though 24 would work fine too, I think); Little Endian checked. I unchecked "Prepare for Internet Streaming", as I'm going to burn the file to DVD. If you have to upload the file online (or will share with a PC user), check that and select "Fast Start".
One quick tip about this method is that the video must be set at "Actual Size" ("View", "Actual Size"). If you have the window open at larger than actual size, the rendering of the video will be at that larger size, and will be pixelated.

The drawback to this is that a 2.2 GB AVI file turned into a 10.4 GB mov file, but the quality appeared to be the same to me.

I hope that helps. If anyone has better compression settings, or a better method, please let me know.