I just transferred an old D-VHS tape and I'm editing it right now with AVS+. Found out that there's some audio sync issues after demuxing the video with DGIndex.
There were some dropouts on the tape, I know that's one of the causes of all these audio problems I'm having. There's nothing I can really do about that, I don't think.
If I import the audio with DirectShowSource its completely out of sync at the start but towards the end it's fine. If I use FFAudioSource it tells me "no audio track found".
FFMPegSource2 is completely out of sync as well, either that or it crashes MPC-HC when I try to scrub through the preview.
I tried muxing the original video with TSMuxer, but when I demuxed it with DGIndex it gives me some "unusually large audio delay" error and I can't open it in anything (that being Audacity and AVS through DShowsource/ffaudiosource). TSDoctor and HDTVtoMPEG2 doesn't fix the issue either.
I also tried ProjectX. Everything's all in sync, however, it's tossing away random parts of the video that play perfectly fine in the original video, so its cutting off dialouge mid sentence. If I change enable one of the PreSettings "Audio: limit points of PTS for sync", the same thing happens. Enabling "Audio: use only first PTS for sync" makes it out of sync.
Does anyone now how I can get my video completely in sync? I can send a 100MB sample if anyone needs it.
Code:General ID : 1002 (0x3EA) Complete name : F:\vlc\nascar sony hdtv 500 2005.ts Format : MPEG-TS File size : 6.03 GiB Duration : 2 h 55 min Overall bit rate mode : Variable Overall bit rate : 4 925 kb/s Video ID : 17 (0x11) Menu ID : 1 (0x1) Format : MPEG Video Format version : Version 2 Format profile : Main@Main Format settings : CustomMatrix / BVOP Format settings, BVOP : Yes Format settings, Matrix : Custom Format settings, GOP : M=3, N=15 Format settings, picture structure : Frame Codec ID : 2 Duration : 2 h 55 min Bit rate mode : Variable Bit rate : 4 423 kb/s Maximum bit rate : 15.0 Mb/s Width : 704 pixels Height : 480 pixels Display aspect ratio : 4:3 Frame rate : 29.970 (30000/1001) FPS Standard : Component Color space : YUV Chroma subsampling : 4:2:0 Bit depth : 8 bits Scan type : Interlaced Scan order : Top Field First Compression mode : Lossy Bits/(Pixel*Frame) : 0.437 Time code of first frame : 06:27:15;15 Time code source : Group of pictures header GOP, Open/Closed : Open Stream size : 5.42 GiB (90%) Audio ID : 20 (0x14) Menu ID : 1 (0x1) Format : AC-3 Format/Info : Audio Coding 3 Commercial name : Dolby Digital Codec ID : 129 Duration : 2 h 55 min Bit rate mode : Constant Bit rate : 256 kb/s Channel(s) : 2 channels Channel layout : L R Sampling rate : 48.0 kHz Frame rate : 31.250 FPS (1536 SPF) Compression mode : Lossy Delay relative to video : -245 ms Stream size : 321 MiB (5%) Service kind : Complete Main Text ID : 17 (0x11)-CC1 Menu ID : 1 (0x1) Format : EIA-608 Muxing mode : A/53 / DTVCC Transport Muxing mode, more info : Muxed in Video #1 Duration : 2 h 55 min Bit rate mode : Constant Stream size : 0.00 Byte (0%) CaptionServiceName : CC1
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Last edited by ENunn; 17th Sep 2020 at 00:26.
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An original sample is useful if you can reproduce the sync issue. Processing it through avisynth or some other manipulations introduces other issues. eg. Maybe you have an issue with your filters or install ? For example, your directshow filters might be setup so it assumes the framerate is incorrect. It might be working correctly on some other setup or someone else's computer
But it might help to post an original sample anyways, or maybe you need to stream copy a longer or better sample that exhibits the issue -
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whats about ffmpeg.exe -i "F:\vlc\nascar sony hdtv 500 2005.ts" -c copy "F:\vlc\nascar sony hdtv 500 2005.mkv"
(if "nascar sony hdtv 500 2005.ts" is your original file, otherwise replace it with the name of the original file). -
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Everything works ok in that sample in terms of frame rate for directshow using lav filters, avs+ x64. Frame rate is 29.97 (30000/1001) . Not 59.94 like you reported
lsmash works ok too, correct frame rate; not "The number of tracks equals 0."
Maybe you have old plugins or old versions, or bad/old directshow filters installed
As for sync, can't help you on a small sample. Try updating your plugins first -
Odd. I don't know what plugins I need to update. I have LAV, I'm running the latest on that but other than that I really don't know what other plugins need updating.
I guess you tried the LSMASHVideoSource. On my end I keep getting a "Failed to read an input file" error.Last edited by ENunn; 17th Sep 2020 at 15:11.
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LSmashVideoSource is only for MP4, MOV, 3gp (ISO base media formats)
LWLibavVideoSource is for everything else
Code:aud=lwlibavaudioSource("nascar sony hdtv 500 2005 sample.ts") vid=lwlibavvideoSource("nascar sony hdtv 500 2005 sample.ts") audiodub(vid,aud)
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I ran it through TMPGEnc mpeg smart Renderer, does this help?
[Attachment 54931 - Click to enlarge] -
Oh yeah that's in sync and stuff. I probably should've added the section where the tape drops out, but it would've been a while until there would be someone on screen talking and that would make it more than 100mb.
Gonna try this software out on the full file. Is there a way I can output it without transcoding it? I really don't want to lose a lot of quality.Last edited by ENunn; 17th Sep 2020 at 17:25.
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Ah, welp it ALMOST 100% fixed it!!! It's out of sync at the end but it's in sync at the beginning. (through mpeg2source + dshow or ffaudiosource). I need it in sync for the whole vid.
Last edited by ENunn; 17th Sep 2020 at 17:42.
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Last edited by ENunn; 17th Sep 2020 at 20:25.
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Posting again after a while, I'm trying this again with some other D-VHS rips, but they have a lot of dropouts. So whenever I fix the file with BOTH ffmpeg and VideoReDo, then index with DGIndex, the resulting d2v and ac3 files are out of sync. If I load the .ts file with lwlibavvideosource, everything's in sync but there's a ton of field order changes, so when I deinterlace, it's jumpy. Does anyone know of any solutions to the problem? Recapping the tape has the same problems. I would send a sample, but I don't believe it would show the issues I'm having other than the field order change.
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