<br><br><div><span class="gmail_quote">On 11/12/2007, <b class="gmail_sendername">Neil Dunbar</b> <<a href="mailto:neil.dunbar@pobox.com">neil.dunbar@pobox.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
All,<br><br>Not a question to burn any brainpower over, since I have a working solution<br>anyway, but it might be nice to see if I can improve it.<br><br>Problem: I've got a fair number of Matroska rips from HD-DVD, transcoded via
<br>x264 down to 720p from 1080p. Since I've got a 720p LCD HDTV, leaving it in<br>1080p is silly, to say nothing of a CPU-hog.<br><br>Now, I know that the MythVideo Internal player (version 0.20.2) doesn't really
<br>like Matroska that much. It plays, but fast forwarding and rewinding is a bit<br>of a dead loss. So I transcode them into MPEG-2 files via mencoder - takes<br>more space, but I can deal with that, and I can fast forward, remember
<br>position, all that stuff. Problem solved.<br><br>So now I thought I'd transcode to MPEG-4 (DX50) via mencoder to get smaller<br>file sizes, while not beating up too much on the frontend CPU. The files play<br>fine in mplayer, but when imported I sometimes get framedrops, and fast
<br>forwarding/rewind tends to be a bit of a disaster. Picture gets corrupted<br>until the next keyframe, audio doesn't silence when FF goes past x3. Lots of<br>people have described these problems - so nothing new here.
<br><br>But since recordings transcoded via Mythtranscode into MPEG-4 play/rewind/fast<br>forward just fine, there must be a set of parameters for mencoder/ffmpeg<br>which will produce Internal-friendly files. Does anyone have experience that
<br>could bring to bear here?<br><br>I know I could also use Xine and Mplayer, but the integration of theme and<br>control from the Internal player is just too nice (and has significant WAF<br>correlation).<br><br>All ideas happily entertained,
<br><br></blockquote></div><br>I can't give you a precise answer but I've seen something similar. I wanted to rip a set of DVDs of TV shows and I didn't have the discspace for ISOs. I initially used the Import function in Mythtv but I couldn't get a combination of time taken:quality I was happy with with the defaults. I then tried to define my own transcoder but found it didn't get called so to cut a long story short I ended up ripping and transcoding them outside of Myth with a few scripts.
<br><br>I used avidemux2_cli to transcode using ffmpeg4. Once I'd settled on this process I went ahead and ripped/transcoded 250+ episodes of TV from DVDs. I was checking them using mplayer. When I came to view them in Mythtv I found the same sorts of problems you reported - especially the fact that the picture gets corrupted until the next keyframe (sometimes this happens in normal play, not just in fastforward). So I changed the default player to mplayer. As you say the lack of consistency with the rest of Myth is irritating but it would take too long to re-encode them (and if I was to invest that kind of time, I'd want to go back to the DVDs).
<br><br>However now that I've done my "big push" when I want to do any new rips - I've done a couple of discs since - I use the same process but set avidemux2_cli to xvid4 instead. This takes about twice as long on my machine but the results are a little better and they play fine with the internal player.
<br><br>I have a feeling that mythtrancode uses ffmpeg as well so maybe that's the common factor here?<br clear="all"><br>-- <br>Paul Mason