Re: [python-win32] How to set value with PyIPropertyStore
Ok, I see, thanks a lot for your help though. I probably need to find a different method. Thanks a lot for your patience! On Fri, Nov 15, 2019 at 6:51 AM Tim Roberts wrote: > On Nov 14, 2019, at 4:15 PM, Peng Chen wrote: > > > > Nah, thanks, the stuff I'm trying to do is actually quite simple. > > I try to read the "Encoded date" info from video file, apply a timeshift > and write it back. > > I searched a few different libs, they are either works for image files > only or it's read only and I can't write. > > So I thought of pywin32 and really didn't expect this coming… > > I’m pretty confident that the Windows property system will not be able to > change the file itself. These APIs might have filters that let them READ > items from the media files, but I seriously doubt they will be to MODIFY > media files. > — > Tim Roberts, t...@probo.com > Providenza & Boekelheide, Inc. > > ___ > python-win32 mailing list > python-win32@python.org > https://mail.python.org/mailman/listinfo/python-win32 > ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
On Nov 14, 2019, at 4:15 PM, Peng Chen wrote: > > Nah, thanks, the stuff I'm trying to do is actually quite simple. > I try to read the "Encoded date" info from video file, apply a timeshift and > write it back. > I searched a few different libs, they are either works for image files only > or it's read only and I can't write. > So I thought of pywin32 and really didn't expect this coming… I’m pretty confident that the Windows property system will not be able to change the file itself. These APIs might have filters that let them READ items from the media files, but I seriously doubt they will be to MODIFY media files. — Tim Roberts, t...@probo.com Providenza & Boekelheide, Inc. ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
Nah, thanks, the stuff I'm trying to do is actually quite simple. I try to read the "Encoded date" info from video file, apply a timeshift and write it back. I searched a few different libs, they are either works for image files only or it's read only and I can't write. So I thought of pywin32 and really didn't expect this coming... Thanks! On Mon, Nov 11, 2019 at 5:24 AM Tim Roberts wrote: > On Nov 10, 2019, at 4:13 PM, Peng Chen wrote: > > > then I tried > riid = "" > ctx = None > properties = propsys.SHGetPropertyStoreFromParsingName( > file_name, ctx, shellcon.GPS_READWRITE, riid) > it reported: > (-2147221005, 'Invalid Class String', None, None) > > > That’s correct. “” is not a valid class string. > SHGetPropertyStoreFromParsingName returns a COM interface, and you have to > tell it what interface you want. It is usually IPropertyStore. > > What are you trying to do here? Are you porting some C++ code you found > into Python? > — > Tim Roberts, t...@probo.com > Providenza & Boekelheide, Inc. > > ___ > python-win32 mailing list > python-win32@python.org > https://mail.python.org/mailman/listinfo/python-win32 > ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
On Nov 10, 2019, at 4:13 PM, Peng Chen wrote: > > then I tried > riid = "" > ctx = None > properties = propsys.SHGetPropertyStoreFromParsingName( > file_name, ctx, shellcon.GPS_READWRITE, riid) > it reported: > (-2147221005, 'Invalid Class String', None, None) That’s correct. “” is not a valid class string. SHGetPropertyStoreFromParsingName returns a COM interface, and you have to tell it what interface you want. It is usually IPropertyStore. What are you trying to do here? Are you porting some C++ code you found into Python? — Tim Roberts, t...@probo.com Providenza & Boekelheide, Inc. ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
Hi Tim, Thanks, this works! But now the set value part gives access denied. I checked around, it seems the file needs to be opened in GPS_READWRITE mode in order to write info to the file. So I tried: from win32comext.shell import shellcon properties = propsys.SHGetPropertyStoreFromParsingName( file_name, Flags=shellcon.GPS_READWRITE) it reported: SHGetPropertyStoreFromParsingName() takes no keyword arguments then I tried riid = "" ctx = None properties = propsys.SHGetPropertyStoreFromParsingName( file_name, ctx, shellcon.GPS_READWRITE, riid) it reported: (-2147221005, 'Invalid Class String', None, None) sorry for the different issues, possible to take a look on this? Thanks! On Fri, Nov 8, 2019 at 5:22 AM Tim Roberts wrote: > On Nov 7, 2019, at 2:33 PM, Peng Chen wrote: > > > I tried: > dateShifted = propsys.PyPROPVARIANT( > mDate + shift_time.timedelta_obj, pythoncom.VT_DATE) > and it reports: > module 'win32comext.propsys.propsys' has no attribute ‘PyPROPVARIANT' > > > It is embarrassing that I had to figure this out twice today. > dateShifted = propsys.PROPVARIANTType(mDate+shift_time.timedelta_obj, > pythoncom.VT_DATE) > > The PROPVARIANTType function returns a PyPROPVARIANT object. > — > Tim Roberts, t...@probo.com > Providenza & Boekelheide, Inc. > > ___ > python-win32 mailing list > python-win32@python.org > https://mail.python.org/mailman/listinfo/python-win32 > ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
On Nov 7, 2019, at 2:33 PM, Peng Chen wrote: > > I tried: > dateShifted = propsys.PyPROPVARIANT( > mDate + shift_time.timedelta_obj, pythoncom.VT_DATE) > and it reports: > module 'win32comext.propsys.propsys' has no attribute ‘PyPROPVARIANT' It is embarrassing that I had to figure this out twice today. dateShifted = propsys.PROPVARIANTType(mDate+shift_time.timedelta_obj, pythoncom.VT_DATE) The PROPVARIANTType function returns a PyPROPVARIANT object. — Tim Roberts, t...@probo.com Providenza & Boekelheide, Inc. ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
Thanks Tim, I tried: dateShifted = propsys.PyPROPVARIANT( mDate + shift_time.timedelta_obj, pythoncom.VT_DATE) and it reports: module 'win32comext.propsys.propsys' has no attribute 'PyPROPVARIANT' Should I import it from elsewhere? because the import I had is from win32comext.propsys import propsys, pscon On Thu, Nov 7, 2019 at 7:26 PM Tim Roberts wrote: > Peng Chen wrote: > > Hi Tim, > > Thanks for the reply. Sorry for the late. I just found your email > > today. Yes I tried with this code: > > > > from win32comext.propsys import propsys, pscon > > VIDEO_DATE_ENCODED = pscon.PKEY_Media_DateEncoded > > properties = propsys.SHGetPropertyStoreFromParsingName(file_name) > > mDate = properties.GetValue(VIDEO_DATE_ENCODED).GetValue() # got the > > datetime object > > dateShifted = mDate + shift_time.timedelta_obj # shift date > > properties.SetValue(VIDEO_DATE_ENCODED, dateShifted) # set value > > properties.Commit() > > > > and I got error message when executing to > > properties.SetValue(VIDEO_DATE_ENCODED, dateShifted) > > I found it. Try > >dateShifted = propsys.PyPROPVARIANT(mData + shift_time.timedelta_obj, > pythoncom.VT_DATE) > > -- > Tim Roberts, t...@probo.com > Providenza & Boekelheide, Inc. > > > ___ > python-win32 mailing list > python-win32@python.org > https://mail.python.org/mailman/listinfo/python-win32 > ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
Peng Chen wrote: Hi Tim, Thanks for the reply. Sorry for the late. I just found your email today. Yes I tried with this code: from win32comext.propsys import propsys, pscon VIDEO_DATE_ENCODED = pscon.PKEY_Media_DateEncoded properties = propsys.SHGetPropertyStoreFromParsingName(file_name) mDate = properties.GetValue(VIDEO_DATE_ENCODED).GetValue() # got the datetime object dateShifted = mDate + shift_time.timedelta_obj # shift date properties.SetValue(VIDEO_DATE_ENCODED, dateShifted) # set value properties.Commit() and I got error message when executing to properties.SetValue(VIDEO_DATE_ENCODED, dateShifted) I found it. Try dateShifted = propsys.PyPROPVARIANT(mData + shift_time.timedelta_obj, pythoncom.VT_DATE) -- Tim Roberts, t...@probo.com Providenza & Boekelheide, Inc. smime.p7s Description: S/MIME Cryptographic Signature ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
Hi Tim, Thanks for the reply. Sorry for the late. I just found your email today. Yes I tried with this code: from win32comext.propsys import propsys, pscon VIDEO_DATE_ENCODED = pscon.PKEY_Media_DateEncoded properties = propsys.SHGetPropertyStoreFromParsingName(file_name) mDate = properties.GetValue(VIDEO_DATE_ENCODED).GetValue() # got the datetime object dateShifted = mDate + shift_time.timedelta_obj # shift date properties.SetValue(VIDEO_DATE_ENCODED, dateShifted) # set value properties.Commit() and I got error message when executing to properties.SetValue(VIDEO_DATE_ENCODED, dateShifted) it reports: Object must be a PyPROPVARIANT On Tue, Oct 15, 2019 at 1:25 AM Tim Roberts wrote: > Peng Chen wrote: > > > > I'm working on a script to shift video media creation time. > > > > I can see there is a function > > PyIPropertyStore.SetValue(key, value) and PyIPropertyStore.Commit() > > to write the date back, but I'm not sure how to construct the value > > because it requires PyPROPVARIANT type. > > I can't figure out any where to import this type and doesn't know how > > to construct it. > > PyPROPVARIANT is generally a return type. In a case like this, I would > expect that you would simply pass the datetime value, and the interface > code would convert it into a variant. Have you tried that? Did you get > an error? > > -- > Tim Roberts, t...@probo.com > Providenza & Boekelheide, Inc. > > > ___ > python-win32 mailing list > python-win32@python.org > https://mail.python.org/mailman/listinfo/python-win32 > ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
Re: [python-win32] How to set value with PyIPropertyStore
Peng Chen wrote: I'm working on a script to shift video media creation time. I can see there is a function PyIPropertyStore.SetValue(key, value) and PyIPropertyStore.Commit() to write the date back, but I'm not sure how to construct the value because it requires PyPROPVARIANT type. I can't figure out any where to import this type and doesn't know how to construct it. PyPROPVARIANT is generally a return type. In a case like this, I would expect that you would simply pass the datetime value, and the interface code would convert it into a variant. Have you tried that? Did you get an error? -- Tim Roberts, t...@probo.com Providenza & Boekelheide, Inc. smime.p7s Description: S/MIME Cryptographic Signature ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
[python-win32] How to set value with PyIPropertyStore
Hi, I'm working on a script to shift video media creation time. I used: properties = propsys.SHGetPropertyStoreFromParsingName(file_name) mDate = properties.GetValue(pscon.PKEY_Media_DateEncoded).GetValue() and successfully retrieved media encoded date property. Now I could shift the time and write this value back. I can see there is a function PyIPropertyStore.SetValue(key, value) and PyIPropertyStore.Commit() to write the date back, but I'm not sure how to construct the value because it requires PyPROPVARIANT type. I can't figure out any where to import this type and doesn't know how to construct it. Sorry I'm not familiar with windows programming, would you please help me on this? Thanks! ___ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
