[mythtv-users] Cutting HD-PVR recordings
marius at schrecker.org
Fri Dec 11 15:43:11 UTC 2009
>On Fri Dec 11 15:31 , Doug Vaughan <r.d.vaughan at rogers.com> wrote:For HDPVR recordings I use Avidemux to manually perform lossless edits.
>The restriction is that I must force my STB to only output at 720p. You
>must save the edited file in an avi container and then use ffmpeg to
>copy file avi into a mkv and add a seek table. The audio sync and
>general quality has been excellant. On the rare occassion that there is
>an audio seek issue, I use mkvmerge_gui to resync the audio.
>To make this experience easier I created a Nautilus script that combines
>starting Avidemux and creating the mkv file with ffmpeg after you exit
>I also use a compiled version of Avidemux as my distro's package seems
>to lack some options (Ubuntu 9.10).
>One other thing I should mention is that before editing I have a userjob
>to rename the recording and copy it to a physically separate hard drive.
>Editing and recording at the same time cause disk thrashing which will
>cause issues if you are recording at the same time. You can use rsync
>with bandwidth option (--bwlimit) in the userjob to control the disk
>thrashing during the copy and rename process.
>Although this article is out of date the section on Avidemux and the
>HDPVR is correct.
Especially for the tips about compiling avidemux, and the disk thrashing issue. I have some spare disk space on a separate drive that I didn't know what to do with, now it seems it might be useful after-all ;-)
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