Hm, I hope that almost absent feedback on this topic is not to be
interpreted such as Cinelerra and ffmpeg on Linux maybe are not the
right tools to go with?
Therefore I follow up a little more myselfe:
Den 22. feb. 2013 23:48, skrev Terje J. Hanssen:
HyperDeck Shuttle is said to support Uncompressed QuickTime, Apple
ProRes 422 (HQ) QuickTime, Avid DNxHD QuickTime, Avid DNxHD MXF.
The storage rates for PAL video on HyperDeck Shuttle 2
625 PAL 10 bit @ 720 x 576 @ 25fps
ProRes HQ vs uncompressed = 28 GB/hr vs 93 GB/hr
1080i and 1080p HDTV 1920 x 1080 @ 25fps
ProRes HQ vs uncompressed = 83 GB/hr vs 463 GB/hr
Thus 512 GB SSD (476 GB formatted capacity) will provide
for SD PAL ProRes HQ vs uncompressed 17 hr vs 5.1 hr recording time
for 1080i ProRes HQ vs uncompressed 5.7 hr vs1.0 hr recording time
As ProRes HQ does support both 10 bit 422 SD and HD video, it seems to
qualify as a universial "visually lossless, VBR intra-frame" HQ video
format for both editing and archival purposes, as an alternative to
uncompessed 422 video.
ffmpeg seems to support Apple ProRes, but what about Cinelerra?
http://transcoding.wordpress.com/2012/01/29/prores-ffmpeg/
http://forums.creativecow.net/thread/291/575#744
Is 10 bit 422 uncompressed HD and SD video formats something Cinelerra
can import directly, or will any of the compressed codecs fit better?
What made me unsure was a previous post that said:
Since Cinelerra's preferred uncompressed format is yuv2 video (8bit
packed YUV 4:2:2) and pcm audio in a QuickTime? container, the following
command line should render practically any video file into something
that can be opened and edited in Cinelerra:
transcode -y mov -F yuv2 -N 0x1 -i <input file> -o output.mov
http://code.goto10.org/projects/puredyne-old/wiki/DocVideo-cinelerra-codecs
At least for archival purpose I wonder if encoding uncompressed to
DVCPRO50 using ffmpeg is possible as described in the following howto.
Possibly, is this also a useful editing format that can be edited in
Cinelerra too?
If ProRes 422 HQ for both SD and HD is supported, there will be less
need for DVCPRO50.
By the way, there is already created paches DV50 in HV Cinelerra 4.4
http://www.renomath.org/video/linux/cinelerra/
ffmpeg -i <input_file> -pix_fmt yuv422p output_DVCPRO50.dv
http://www.itbroadcastanddigitalcinema.com/ffmpeg_howto.html#Encoding_DVCAM_DVCPRO25_DVCPRO50
If I interprete the following output correctly, it seems like ffmpeg
does support dv50
ffmpeg -h | grep target
ffmpeg version 1.0.4 Copyright (c) 2000-2012 the FFmpeg developers
built on Feb 10 2013 19:01:53 with gcc 4.7 (SUSE Linux)
-target type specify target file type ("vcd", "svcd", "dvd",
"dv", "dv50", "pal-vcd", "ntsc-svcd", ...)
Terje J. Hanssen
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