Hi,
Finally got my Sony HVR-MRC1 and I have two choices for recording formats. AVI and RAW DV. That confused me a little bit because when I transfer files from a camcorder to a laptop, I get AVI files, and this is supposed to happen without loss, since it is just a transfer and not a conversion. To me, that is RAW. Isn't it? If that is the case, then why is there a RAW DV?
Anyhow, Davinci Resolve cannot read those (DV) files. So I decided to convert them to Apple ProRes 422 HQ using Shutter Encoder. Is this a good choice? Is it a lossless conversion?
Thanks.
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AVI is a container. DV can be put into MOV container as well. There is no loss if it's transferred over fire wire . Streams can be transferred in/out of containers without loss if done properly
Anyhow, Davinci Resolve cannot read those (DV) files.
https://documents.blackmagicdesign.com/SupportNotes/DaVinci_Resolve_18_Supported_Codec_List.pdf
So I decided to convert them to Apple ProRes 422 HQ using Shutter Encoder. Is this a good choice?
Is it a lossless conversion?
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I understand.
DV-AVI is supported . I just verified and it works ok (at least in the Studio version - I would imagine it should work in the free version too, because DV is a consumer 8bit format)
https://documents.blackmagicdesign.com/SupportNotes/DaVinci_Resolve_18_Supported_Codec_List.pdf
It's a good high quality alternative
No
Ok, so let me get this straight. When recording to miniDV tape and then transferring to a PC using a firewire cable and Scenealyzer, there is no loss and I get .avi files. Those files are supported in Resolve.
When I now record straight to my MRC1, from a camcorder, I can either record in .avi or .dv files (menu of the MRC1 calls it RAW DV), but none of them are supported in Resolve. Hmm? This makes me wonder why? Why are the files that are being recorded to the MRC1 so "different" from the files simply transferred from the tape? I guess that is another question all together.
I guess it would make sense to capture something with tape, transfer it to a PC, and then capture the same "something" with the MRC1, convert it to ProRes and then compare the two. On the other hand, who cares what looks better, if at all. Its about the old school feel of filming with a camcorder and the added convenience of having the footage right away on a CF card.
Thanks. -
The loss is minimal for ProResHQ .
But it's silly to use ProResHQ for DV IMO if you can avoid it - because it will make the filesize much larger, you do incur some tiny loss in quality, but it also takes extra time for converting . It's all negatives, zero positives
Ok, so let me get this straight. When recording to miniDV tape and then transferring to a PC using a firewire cable and Scenealyzer, there is no loss and I get .avi files. Those files are supported in Resolve.
Definitely works for Studio version . Are you assuming that it works on your setup, or did you confirm that worked for the free version ?
When I now record straight to my MRC1, from a camcorder, I can either record in .avi or .dv files (menu of the MRC1 calls it RAW DV), but none of them are supported in Resolve. Hmm? This makes me wonder why? Why are the files that are being recorded to the MRC1 so "different" from the files simply transferred from the tape? I guess that is another question all together.
There might be a limitation for the free version, but I doubt it for DV -
Thats good to know.
But it's silly to use ProResHQ for DV IMO if you can avoid it - because it will make the filesize much larger, you do incur some tiny loss in quality, but it also takes extra time for converting . It's all negatives, zero positives
"Ok, so let me get this straight. When recording to miniDV tape and then transferring to a PC using a firewire cable and Scenealyzer, there is no loss and I get .avi files. Those files are supported in Resolve."
Definitely works for Studio version . Are you assuming that it works on your setup, or did you confirm that worked for the free version ?
What does mediainfo (view=>text) say about these files ? There might be a limitation for the free version, but I doubt it for DV
Thanks. -
Here is a super short clip I found. Should be enough to see if you can Import it or not.
Ok, uploaded a RAW DV and a AVI file. Both come straight from the MRC1...
Thanks.Last edited by plehoediv; 29th Mar 2024 at 14:11.
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This is Type 2 DV ; you want Type 1 DV (audio in 1 track) which is supported by Resolve
See if there is setting to record Type 1
Or there are Type 2 to Type 1 converters.
Another method is vdub2 video=>direct stream copy ; but the audio will only include one of the stereo tracks . You'd have to do a custom mix or extract the other track and import separately -
Nope. I see nothing in the menu that would suggest that you can change between type 1 and 2.
Or there are Type 2 to Type 1 converters.
Another method is vdub2 video=>direct stream copy ; but the audio will only include one of the stereo tracks . You'd have to do a custom mix or extract the other track and import separately
Thanks for all the help. -
Yes, almost all the advantages - no quality loss, smaller file size . It's basically a stream copy into a new container, so faster than re-encoding to prores too
Another method is vdub2 video=>direct stream copy ; but the audio will only include one of the stereo tracks . You'd have to do a custom mix or extract the other track and import separately
I think you should be able to do that in ffmpeg with a batch file -
It works ok in ffmpeg , and keeps both separate audio tracks, and they show up in resolve
Batch file to process a folder of AVI's . The new files will have "type1" appended to the file name
Code:for %%a in ("*.avi") do ffmpeg -i "%%a" -map 0 -c copy "%%~na_type1.avi" pause
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Ok, gonna look into that. Do you have any app in mind?
Hmmm... I thought that was easy... most people prefer GUI's instead of command lines. And it worked on your sample to import to Resolve
I think you should be able to do that in ffmpeg with a batch file
Thanks. -
I can't remember the DV type 2 to type 1 converters, I haven't really dealt with DV much in many years. FFmpeg can do it anyways if you can't find them
I don't know if shutter allows you to adjust the command line - if it can - it should be able too
The key commands are "-map 0" to select all streams , "-c copy" to stream copy (prevent re-encoding)
I'm not up to date on all the ffmpeg gui's . There might be one more suitable for this task than shutter for GUIs -
I did a google search and apparently, a bunch of people had a similar issue, back in the days. So I downloaded a few apps, SyncView, Canopus_DV_File_Converter and uleaddvconverter. None of these apps were even able to open my .DV files! They dont even show up...
I don't know if shutter allows you to adjust the command line - if it can - it should be able too
The key commands are "-map 0" to select all streams , "-c copy" to stream copy (prevent re-encoding)
I'm not up to date on all the ffmpeg gui's . There might be one more suitable for this task than shutter for GUIs
Thanks. -
For DV work, try DVDate from Paul Glagla:
http://paul.glagla.free.fr/index_en.htm
One of the menu options is to convert between type 1 and 2.
If DVDate won't open your file, IMO it's well and truly borked. -
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No luck here. I could open it in vDub2, VideoRedo and MPEG Streamclip. There is an audio track which I can hear, but the video in all three programs is black.
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The .dv video is dark, but it's not "black"
ffmpeg can batch convert the .dv file and keep all tracks - that's what I would use (or maybe some GUI for it) . (Instead of *.avi , you would use *.dv in the batch)
The .dv video works ok in vdub2 for me, but like the AVI , the 2nd audio track isn't retained. Less ideal
mpegstreamclip can open the .dv file if you have QT installed (QT can open it too) . Not ideal because they won't convert to type1 and that won't help you with Resolve -
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Some versions of Resolve have problems with audio in AVI - I'd actually put it into a MOV container. Everything works better in MOV compared to AVI in Resolve, even on Windows. As a general rule for Resolve, if you have a choice use MOV.
I'd do this if you're using .dv
Code:for %%a in ("*.dv") do ffmpeg -i "%%a" -map 0 -c copy "%%~na_type1.mov" pause
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The .dv video is dark, but it's not "black"
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I used ffmpeg once or twice. Have to look up again how to do it. I went to start (Windows 11) and typed cmd and hit enter. Command prompt opened. I then typed d: and got to my drive D. That is where I placed the three ffmpeg files and the video called Thanos,DV. I wasnt sure what part of what you wrote is the command so I tried
ffmpeg -i "Thanos.DV" -map 0 -c copy "%%~na_type1.mov"
I got an error message. See attached file (please).
Thanks
pause -
One more thing. I checked Shutter Encoder again and it has a feature called "rewrap" and you can choose .avi as output file. I did that and I got an .avi file that I can now use in Resolve! Maybe that is the same as what ffmpeg does? I don't know how to tell if it is now type 1 or type 2. Here is the media info text.
Thanks. -
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For non batch (converting 1 at a time), you'd enter the output file name
Code:ffmpeg -i "Thanos.DV" -map 0 -c copy "Thanos.mov"
That's for a batch file , wildcards so all the files in a folder with extension .dv are converted instead of manually doing it 1 by 1 .
If you use a command line for batching directly instead of batch file (.bat) , use 1 "%" instead of 2 "%%"
Code:for %a in ("*.dv") do ffmpeg -i "%a" -map 0 -c copy "%~na_type1.mov"
Yes, looks good
But I would use rewrap to MOV instead of AVI
There is if you look closely, and it's going to be about 1.5-2x the filesize -
I tried replying to each comment individually, but the whole quoting thing got too complicated, ha ha. Anyhow, thanks for all the codes and explaining what they do.
I tried "rewrap" to MOV in Shutter Encoder (on my PC), but it did not work!? Rewrap to AVI does work. I can also go to 'Editing Codecs' and pick Apple ProRes and that will work as well. So who know why rewrap to MOv does not work. Maybe it is a PC thing. Will try my Mac tomorrow. I like rewrap because I did a google search and this is what came up:
"The main difference between rewrapping and converting a video is:
Rewrapping simply changes the container or wrapper of the video file without recompressing the video and audio data. It keeps the original video and audio codecs intact. This is a quick process and maintains the original quality."
Exactly what I was looking for. too bad it doesn't work.
Increase in file size is not an issue for me. I am not doing this professionally (obviously) so I only have a few files here and there.
Thanks. -
By the way, when rewrapping to MOV using Shutter Encoder, it operates smoothly with files other than .DV files sourced from the MRC1. Hence, the issue seems specific to the .DV files. Just saying.
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