Hi,
On 21/04/12 06:56, Murray Strome wrote:
[...]
I still cannot figure out how to properly render video to a video file
that contains both audio and video and is a 720X480 NTSC DVD High
Quality Full Screen or Wide Screen compatible .mpg file (depending on
whether the aspect ration is to be 4:3 or 16:9). When I look at the
options, there seem to be only a few that let me render both the audio
and video.
[...]
Should I be looking at rendering the Video and Audio streams
separately? If so, what settings should I use (perhaps .mpg video and
.mpg audio?).
This is what has proven to be the easiest for me, regardless of final
format.
Once you find options that suit your needs you may want to look into
batch rendering to fire the audio and video rendering in one go.
If I do that, how do I combine the streams into a standard NSTC style
.mpg file containing audio and video compatible with the .mpg used to
create DVDs and in perfect synchronization?
For the video usually use the "YUV4MPEG Stream" for video. If I have enough
(lots!) disk space I just use the uncompressed one (no "pipe" option
selected), because it seems to be the fastest to render.
Otherwise I use it with the pipe option and this line in the pipe (I
think it comes straight from the cinelerra manual):
ffmpeg -f yuv4mpegpipe -i - -y -target dvd -flags +ilme+ildct %
The different in size between the uncompressed and piped m2v is roughly
1/4
For audio AC3 with a high bitrate (at least 256).
Finally I use this ffmpeg line to mux them together (again I think it's
from the cinelerra manual plus some modification):
ffmpeg -i test.ac3 -i test.m2v -target pal-dvd -flags +ilme+ildct -vb
8000k test2.mpg
(note that I mostly use PAL so in your case the -target shuold probably
be -target ntsc-dvd)
Which usually gives satisfactory results.
One advantage of having the audio and video files separate with a high
quality
video is that you can use those as "master" files to create different
formats (e.g. DVD, web etc.) outside cinelerra and possibly script the
process.
Hope this helps.
Ciao,
Lorenzo.
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