DV AVI files, next steps to restore video?
Hello,
This forum helped me capture my miniDV again in raw format. My professional converter used Scenalyzer to get DV Avi type 2 file (single file). 720x576, 25fps, PAL. Now, my next steps are: 1. De-interlacing with QTGMC along with 25fps to 50fps conversion (Hybrid). 2. Need to reduce Noise but not sure which filter and what settings? 3. Would like to refine more but not sure which filters are good. I have Topaz Video AI and DAVINCI Resolve. 4. Will Hybrid and Resolve take this avi file or need to re encode to another codec and Container? 5. What is the best software to change container only? Avidemux? 6. What is the best software to re encode in case needed? Avidemux? Looking for info from experts and if possible link to guides which has settings for specific tasks. |
I know for sure other members here have more experience than me in DV post processing but I would import the file into vdub2 and output as AVI 4:2:2 (yuv2) HuffYUV, so like this it becomes a lossless like AVI file and you can do what ever you want with it, Though it is not really lossless since it was converted from 4:2:0 to 4:2:2. The files will be huge even with HufYUV lossless compression but they should be just temporary files for post processing purposes.
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I recently got a batch of DV tapes and had not actually done DV for quite some time, and only my own tapes.
My big issue was, or is...as I am still tweaking my workflow...DV1 does not seem to play well with my VirtualDub or Hybrid, or Avidemux. Freeze crash error, no ingest. I have been forced to take my WinDV transfers, as well as my PowerDirector transfers, and run them through PowerDirector AGAIN to render as DV type 2. Only THEN can I get success with those programs and if needed QTGMC. I think Scenalyzer will give me the correct file type and I can skip a boatload of processing. QUESTION: How destructive is a convert from DV1 to DV2? I hope this question, and my comments get some input that helps the topic. |
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Sorry, but I am no expert to answer your question. Hope experts will pitch in. |
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https://paulglagla.com/en/dvdate-2/ While it does take a little while to convert, there's hardly any CPU activity so I doubt that there's any encoding going on. |
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The main reason for converting 420 to 422 would be for subsequent processing such as color correction, filtering, and graphics effects. Processing in 422 reduces artifacts resulting from the lower color resolution. Note that these artifacts may or may not be significant for your purposes. If converting directly to a SD 422 distribution format with cuts only editing it may not be worth it.
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I can confirm the DVtype2 files open in both Avidemux and VirtualDub.
Staxrip recode also ingested the files, and it has QTGMC native! |
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2. The best denoiser are the temporal or spatial/temporal filters. TemporalDegrain2, MCTemporalDenoise, SMDegrain, KNLMeansCL. QTGMC itself is a (less accurate) denoiser. 3. Topaz VEAI is not really appropriate for SD DV videos, but you can give it a try using it just as an upscaler (no deinterlacing, no denoising). DAVINCI Resolve is excellent for color correction. 4. Yes, as long as the right codecs are installed 5. There is no sense in changing container unrelated to a compression (i.e. to h264 or h265) 6. All the existing GUI do not reencode on their own, but use ffmpeg. If you are not comfortable with a command line, choose whatever you like more |
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1. QTGMC (Vapoursynth) in Hybrid, I normally use bob (which doubles fps). That's it. Should I use other settings also which might result in better output? Any link to settings guide? 2. Are there any optimal settings guide for these filters? 3. I somewhere read in this forum that right sequence is colour correction->denoise, degrain ->deinterlace -> encode to final format. is this correct? |
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The setting for a better output does not exist, it depends on your source. For a "natural" look I often use Code:
QTGMC(preset="slow", matchpreset="slow", matchpreset2="slow", sourcematch=3, tr1=2, tr2=1, NoiseTR=2, sharpness=0.1) Quote:
Be careful when denoising after QTGMC to do not introduce a "plastic look" by removing too much noise and details In addition you can also do some sharpening after a denoise, but again be careful to do not introduce/enhace the halos. Quote:
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2. Be careful. Do not turn video plastic from aggressive filtering. Remove noise, not detail. 3. Filters are based on needs, not random non-reasons. DaVinci is for color, worthless otherwise. Topaz is worthless altogether, and is wholly inferior (especially for SD sources, and even more especially for VHS) to Avisynth. Do not use Topaz if you seek quality, it adds artifacts, oversharpens, messy stuff. 5. You often don't just "change container". From what to what? Source, destination. And no, usually not Avidemux. 6. Again, what to what? Source, destination? For some things, yes Avidemux. For others, Hybrid. For some, MainConcept or other payware. It just depends. Also, adding to above replies... Filter 4:2:0 to 4:2:2, when possible, hoping it 's not too damaged. There are filters for Avisynth and VirtualDub both. Hybrid may even has some integrated, don't recall offhand. Correct, needs to be stated again: deinterlace > NR > color correction > encode In rarer situations, order may change. But usually those who think they found the exception really have not. For QTGMC, preset=Slow softens. I usually start with Faster, and slow down if needed. Rarely do I exceed Medium. I think lollo2 here is overriding Slow with switches, but I'd still want to doublecheck the syntax. I'd rather switch everything, not use a preset, if switching. @Hushpower, the variable is the DV codec, and all of the software codecs massively suck. Even bad hardware codecs are often better. Avidemux really often very little for restoring. VirtualDub and Hybrid are the GUI tools for this. Even more detailed is from scripting. Sometimes scripting is the only way to restore, as Hybrid doesn't include everything, just popular options. And Hybrid doesn't necessarily order the commands as needed, just started ordering. |
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It just fully depends on multiple factors. I'm just stating that the dogma of "throwing away 50% of motion data" is not accurate, and 50/59.94 is not always better. To get there, data is interpolated. (This isn't at all the same as 4:1:1 DV tossing out 50% of color data, by contrast.)
The Slow just softens too much. I don't want false soft, nor false sharp. But trying to get there can be source based. It's why start with Faster, and go from there. |
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If this is true, which codec should I select so that quality is not compromised? It would be great if this codec is accepted in Resolve and Final Cut pro like softwares. |
Have a look here for the supported codecs in Resolve:
https://www.digitalfaq.com/forum/vid...i-resolve.html You need to export the AviSynth processing and send them to Resolve in uncompressed avi format or a lossless format, to avoid degradation. Prores (almost lossless under certain conditions) or h264 with very low CRF (<10/14) can be used. Selur can help you through the outputs of his tool ;) |
In regard to (near-)lossless formats. Hybrid supports:
Cu Selur |
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