Yes, cinelerra is currently rather limited in what files it can read (in my opinion, at least). What I (used to) do is open the m2t file directly in cinelerra and use the (now removed) 1080to480 effect (only works if you are outputting NTSC) and the translate effect to change from 1080 to 720. You can find the 1080to480 effect in the svn history, it was removed (changed) for some reason quite a while back. It's almost the same as 1080to540 but obviously the vert resolution is different.
What I do now however is fix the quicktime colormodel translation because it incorrectly converts the interlaced YUV420 from the input file to the YUV888 (or RBG888, or any of the working formats), so the chroma channels are incorrectly interlaced - zoom in on any area of high motion with high color contrast and you'll see what I am talking about. Unfortunately the quicktime lib doesn't check the input interlacing so I have to hack/hardcode the conversion, which means I can't use it to edit any progressive input that is in YUV420. Note that the output also has to be fixed if you are using YUV4MPEGPIPE output since it (incorrectly) converts back to YUV420 before piping it out. Then, I use frames->fields then translate to resize each field then fields->frames to change back to interlaced 720x480. Of course I had to also change the frames<->fields effects to correctly convert between frames/fields as the default effects double (or half) the vertical resolution for some reason. On 5/2/07, Bas Alphenaar <[EMAIL PROTECTED]> wrote:
Hello, A few days ago I posted a message on this mailinglist about the Cinelerra viewer that crashed. This problem is solved, but I still can't use Cinelerra properly because of another problem. I am running Cinelerra r1008 on Gentoo (amd64), I compiled with the following options: ./configure --prefix=/usr --with-buildinfo=svn/recompile --enable-mmx --enable-3dnow --with-external-ffmpeg Quote from my other post: > I have an HDV camcorder (Sony HDR-HC1) and I capture the MPEG-TS stream > via Firewire using dvgrab with the HDV patch. When the capturing is done, I have a fresh *.m2t file in 1080i. I tried to convert this file to 720p in several ways but none of them works. These are the things I tried, at every point I give the command that I used to create the 720p video and how Cinelerra handled the video: ------------------------------ 1. ffmpeg H.264 with AVI container ffmpeg -i dvgrab-001.m2t -deinterlace -s 1280x720 -vcodec h264 -qmin 10 -qmax 15 -acodec mp3 -ab 256k 1.avi The Viewer shows nothing, no sound, the commandline says this: new_acodec: couldn't find codec for "" new_vcodec: couldn't find codec for "h264" new_acodec: couldn't find codec for "" new_vcodec: couldn't find codec for "h264" (Yes, it is outputted twice) ------------------------------ 2. ffmpeg H.264 with MOV container ffmpeg -i dvgrab-001.m2t -deinterlace -s 1280x720 -vcodec h264 -qmin 10 -qmax 15 -acodec mp3 -ab 256k 2.mov The video works and sometimes the sound also works (?), but the sound is not in sync when it works (I am using ALSA). Cinelerra also throws this error in an error window randomly while navigating through the video with the Viewer: virtual int FileMOV::read_frame(VFrame*): quicktime_read_frame/quicktime_decode_video failed, result: (http://bugs.cinelerra.org/buglist.cgi?quicksearch=quicktime_read_frame shows 2 bugs about this problem, so I don't think it can be solved without somebody who can program) ------------------------------ 3. ffmpeg H.264 with MOV container (but with AC3 codec) ffmpeg -i dvgrab-001.m2t -deinterlace -s 1280x720 -vcodec h264 -qmin 10 -qmax 15 -acodec ac3 ac3.mov The video plays in the Viewer, the sound doesn't. The commandline shows this: new_acodec: couldn't find codec for "ms " new_acodec: couldn't find codec for "ms " new_acodec: couldn't find codec for "ms " new_acodec: couldn't find codec for "ms " ------------------------------ 4. mencoder H.264 with AVI container mencoder dvgrab-001.m2t -ovc x264 -oac mp3lame -vf pp=ci,scale=1280:720 -o 4.avi The Viewer shows nothing and there is no sound, the commandline outputs this: new_vcodec: couldn't find codec for "h264" new_vcodec: couldn't find codec for "h264" ------------------------------ 5. ffmpeg MJPEG with AVI container ffmpeg -i dvgrab-001.m2t -deinterlace -s 1280x720 -vcodec mjpeg -acodec mp3 -ab 256k 5.avi No video or sound in the Viewer, can't even move the navigation button. The commandline shows this: new_acodec: couldn't find codec for "" new_acodec: couldn't find codec for "" new_acodec: couldn't find codec for "" ------------------------------ Is Cinelerra very picky on the video files it can use or am I making a mistake here? _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
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