In the old days, I had my 2x8mm moviecam, turned the spool when full to record the other half. Then mail the exposed film to the processor and wait 2-4 weeks for the results. Editing and synchronizing the audio recording was another lengthy activity.
Thank you for the Digital Solutions
July 25, 2012 at 4:15 AM
Anonymous said...
iPad screen is 1024 x 768 but your footage seems to be 1280x720. Is the iPad screen just scaled to this resolution ? Do you get black side bars ? Thanks
Yes you get black bars. And when you record while ipad is in portrait mode, the bars on the side are really big.
October 13, 2012 at 8:09 AM
It took quite some experimentation and I was about to give up on this, but it looks I cracked it. I can now record compressed video with the BlackMagic Hyperdeck Shuttle II and use the video file with Mac OSX. I was already able to use the uncompressed video files from the device, but those are just too freaking huge to comfortably work with on a macbook air.
STEP1: Make sure you are using the latest drivers and firmware as posted on the support page of Blackmagic design. I used the 3.0.2 version.
STEP2: Set the device to record compressed files into a quicktime container.
[Image]
STEP3: Don't try to record output from your iPhone... I tried, and it did not work. My iPad2 and iPad3 HDMI signals were accepted just fine. You will need an adapter from Apple to hookup an iPad to a Hyperdeck Shuttle II.
[Image]
STEP4: BlackMagic wants you to install the DNxHD codecs from Avid's website. Frankly: don't bother. You can try, but they did not work for me. I would either get a black screen video with some audio (iPhone recording) or worse, I would have a crashing quicktime player (iPad recording). The crash I am seeing is this one:
Thread 3 Crashed:: Dispatch queue: com.apple.coremedia.playbackboss
0 com.apple.audio.toolbox.AudioToolbox 0x00007fff841595a7 _AT_AudioUnitUninitialize + 55
1 com.apple.audio.toolbox.AudioToolbox 0x00007fff841ed819 MixerChannel::Uninitialize() + 27
2 com.apple.audio.toolbox.AudioToolbox 0x00007fff841ede5e SubmixGraph::ConnectToDestination(bool, CAStreamBasicDescription const&, CAAudioChannelLayout*) + 184
3 com.apple.audio.toolbox.AudioToolbox 0x00007fff841e7120 MasterMixer::ConnectSubgraph(SubmixGraph*) + 686
4 com.apple.audio.toolbox.AudioToolbox 0x00007fff841e7415 SubmixGraph::ConnectInputChannel(bool, MixerChannel*, bool) + 657
5 com.apple.audio.toolbox.AudioToolbox 0x00007fff841e7826 AQMEDevice::AddRunningClient(AQIONodeClient&, bool) + 262
6 com.apple.audio.toolbox.AudioToolbox 0x00007fff841cbaf5 AudioQueueObject::StartRunning(AQIONode*) + 51
7 com.apple.audio.toolbox.AudioToolbox 0x00007fff841c47e3 AudioQueueObject::_Start(XAudioTimeStamp const&) + 637
8 com.apple.audio.toolbox.AudioToolbox 0x00007fff841c494a AudioQueueObject::Start(XAudioTimeStamp const&) + 18
9 com.apple.audio.toolbox.AudioToolbox 0x00007fff841dd8cb AQServer_Start + 64
10 com.apple.audio.toolbox.AudioToolbox 0x00007fff841e0e88 AudioQueueStart + 183
11 com.apple.MediaToolbox 0x00007fff877497d8 FigAudioQueueStart + 551
12 com.apple.MediaToolbox 0x00007fff877a33b3 0x7fff87728000 + 504755
13 com.apple.MediaToolbox 0x00007fff8779ae4e 0x7fff87728000 + 470606
14 com.apple.MediaToolbox 0x00007fff8779e2e0 0x7fff87728000 + 484064
15 com.apple.MediaToolbox 0x00007fff8779e508 0x7fff87728000 + 484616
16 com.apple.MediaToolbox 0x00007fff8779e75a 0x7fff87728000 + 485210
17 libdispatch.dylib 0x00007fff8dd77a86 _dispatch_call_block_and_release + 18
18 libdispatch.dylib 0x00007fff8dd792d6 _dispatch_queue_drain + 264
19 libdispatch.dylib 0x00007fff8dd79132 _dispatch_queue_invoke + 54
20 libdispatch.dylib 0x00007fff8dd7892c _dispatch_worker_thread2 + 198
21 libsystem_c.dylib 0x00007fff8825b3da _pthread_wqthread + 316
22 libsystem_c.dylib 0x00007fff8825cb85 start_wqthread + 13
STEP5: FFMPEG to the rescue!
Instead of trying to get DNxHD and Quicktime to play nice together, Open Source will save us, hooray! Note that some companies charge 500 euros for video conversion software, but ffmpeg will do the trick. You need to make sure you have a very recent version, as DNxHD support was only recently added. Get the ffmpeg binary from the ffmpegmac.net site.
STEP6:
Convert the DNxHD file to something more useful using the following command line:
$ ffmpeg -i Capture0002.mov -an output.mp4
Note that this invokation strips the audio, if you want to keep it, you will have to consult the ffmpeg manual on how to do that. The ffmpeg tool recognizes the iPad2 stream with the following properties:
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Capture0002.mov':
Metadata:
creation_time : 2012-07-23 22:12:33
Duration: 00:00:13.38, start: 0.000000, bitrate: 238657 kb/s
Stream #0:0(eng): Video: dnxhd (AVdn / 0x6E645641), yuv422p10le, 1280x720, 220200 kb/s, 60 fps, 60 tbr, 6k tbn, 6k tbc
Metadata:
creation_time : 2012-07-23 22:12:33
handler_name : Apple Alias Data Handler
Stream #0:1(eng): Audio: pcm_s24le (lpcm / 0x6D63706C), 48000 Hz, 16 channels, s32, 18432 kb/s
Metadata:
creation_time : 2012-07-23 22:12:33
handler_name : Apple Alias Data Handler
"Definitive Guide to Using Hyperdeck Shuttle II with Mac OSX"
3 Comments -
In the old days, I had my 2x8mm moviecam, turned the spool when full to record the other half. Then mail the exposed film to the processor and wait 2-4 weeks for the results. Editing and synchronizing the audio recording was another lengthy activity.
Thank you for the Digital Solutions
July 25, 2012 at 4:15 AM
iPad screen is 1024 x 768 but your footage seems to be 1280x720. Is the iPad screen just scaled to this resolution ? Do you get black side bars ? Thanks
October 13, 2012 at 4:20 AM
Yes you get black bars.
And when you record while ipad is in portrait mode, the bars on the side are really big.
October 13, 2012 at 8:09 AM