I have a mac running Lion with RV 3.12.14 64bit and FinalCut Pro installed. When I attempt to play a ProRes file I get the following Error:
WARNING: quicktime codecs: Could not find video Decoder for fourcc apch
ERROR: Unsupported video codec: for video track 0 (0)
WARNING: QFileInfo::absolutePath: Constructed with empty filename
Any idea on how I can get RV to playback ProRes?
Hello Frederick,
You need to use the 32 bit version of RV on OSX to get the native Apple Quicktime components. The 64 bit version uses alternate libraries due to the historical lack of 64 bit Apple Quicktime libraries. You can have both versions installed on the same system.
Cheers,
Seth
Great thanks for the Response! Is there any plans to update the 64bit app to be able to play the native apple quicktime components?
Also - does it only work on OSX? Could it work on Linux?
Has there been any improvements on updating the 64bit app? We're getting the same error message, running Rv 3.12.14 and trying to run ProRes.
Thanks
Roula
Hi Roula and Frederick,
Support for ProRes and other Quicktime components in 64-bit RV is unlikely to happen anytime soon. The support in 32-bit RV comes via the apple quicktime api, which is 32-bit only. 64 bit RV quicktime support is limited to the codecs supported by libquicktime. We have a longterm project in progress to eliminate the libquicktime bottleneck and support ffmpeg/libavcodec directly. FFmpeg has some prores support, but the patent/license implications of providing prores support in RV through ffmpeg are not clear at this time.
I am sorry there is isn't anything more promising to report at this time.
Thanks,
Jon
I believe other software is addressing this issue by their 64bit apps spawning a 32bit "helper" process to read the QT files with the 32bit codecs. The files are then passed to the 64bit app. Is there any chance you could develop something along this line?
Hi Brian,
Yes, we have actually gone pretty far down the "32bit side-car" path. Unfortunately this approach has a couple serious problems:
Hi! Before I go bug our Systems Admin to install the 32-bit version of RV so we can view files encoded with the prores CODEC.....
1) Does RV version 3.10.10 support Prores in the same manner listed above? I know we are quite behind on updates.
2) Does RV version 3.10.10 support viewing alpha channels in a Prores 444 encoded file?
Thanks for your time,
Kira
Hi Kira,
I do not have a ProRes 444 file to test with, but all 32-bit versions of RV work in the way described above. If you can give me a sample file (even in a private ticket) to test with I can let you know about the 444 part. Otherwise having the ProRes component installed is all you should need with 32-bit RV.
Thanks,
Jon
Thanks for the offer to test it out Jon, here's a quick file encoded as prores 444 with alpha channel: https://drive.google.com/file/d/0B5l1qSG9Hc2fX3FoTk01X2sydDQ/edit?usp=sharing
Kira
Hi Kira,
That file plays back fine on RV-4 with the environment variable RV_ENABLE_MIO_FFMPEG set _and_ the plugin recompiled to allow ProRes.
Clearly the environment variable is easy to set, and the directions are easy to follow for whatever platform you use to recompile mio_ffmpeg to allow additional codecs. We cannot legally distribute our reader plugin with support for patented codecs like ProRes or DNxHD enabled. Therefore if you are willing to take legal responsibility for doing so, then you can follow the directions we include in the src/mio_ffmpeg/README of every RV-4 installation to enable these codecs yourself.
Hope that helps.
Thanks,
Jon
We're on RV 3.10.10, will it function in the same way?
Thanks!
Kira
Hi Kira,
No. I am sorry but this requires the new mio_ffmpeg movie plugin included with RV-4 exclusively.
Thanks,
Jon
I'm getting the same error with XDCAM wrapped in MXF and anything ProRes... have there been any advances regarding this error yet?
I don't know if I'm doing something wrong, but I can't seem to get any format to play in RV. I've tried variations of ProRes, MXF, H264, and MP4... any help would be appreciated. Thanks!
Hi Yurii,
RV is still not licensed to play ProRes. Much of what is said above is still true. However RV now plays MXF files and can play H.264 encoded streams in MOV files as well as MP4 files.
Which version of RV are you using and on which platform?
RV can definitely play some of those files. If you would like to open a private ticket to discuss the specifics of your media and perhaps share a sample please do so. That would probably help us help you the fastest.
Thanks,
Jon
I noticed that the YCbCr matrix used by RV seems to always be Rec601 when reading mov. When exporting in ProRes 422 from Nuke (encoder : mov_64) , it is automatically set to Rec709 if HD, but RV still uses Rec601. I can change the matrix used in Nuke when using encoder mov_32, but is there a way to force RV to use Rec709 YCbCr matrix instead ?
In the Image Info tool, with a mov not in ProRes, I think this setting is called 'ColorSpace/Conversion', but it is always Rec601 even when set to Rec709 in Nuke. What metadata key is it using to check this value, maybe I can simply change that.
Nuke uses 'quicktime/nclc_matrix' and 'quicktime/thefoundry/YCbCrMatrix'.
PS: I posted this question here because it seems related to thread.