Tue Jun 19, 2012 4:35 pm
BD-670 .mkvs and AC-3 5.1 stereo
Hi all,
So I have been playing around with the profiles and I do have a configuration that works, but unfortunately I need to re-encode mkvs in order to get it to work and would rather keep the mkvs as pure as possible.
Here is the snippet I am using:
Now, I have used handbrake as well as ffmpeg directly to try and re-encode the DVD mkv files to h264 video encoded streams with ac3 or dca audio codecs, but this sucks for two reasons:
(a) I am encoding the video stream again (I am assuming that MakeMKV is doing a pretty straight cut of the Video VOBs on initial encode) and while I have hardware to do the encoding (E-3 XEON quad-core processor with 16GB or ram) I am concerned about getting a good enough (ie. near equivalent) video stream while maintaining the 5.1 audio.
(b) As well, since my other device is a Sony BD player, this means any movie played there needs to be transcoded again beyond the audio codec. (since only the mpegts streams are supported)
Anyone have a solution or idea? Can we share some of the configs for this device? I have seen many different but so far only the one I posted above has worked to date on the mpeg2video streams.
-Jason
So I have been playing around with the profiles and I do have a configuration that works, but unfortunately I need to re-encode mkvs in order to get it to work and would rather keep the mkvs as pure as possible.
- .mkv using vcodec=h264 and acodec=dca play fine (blu-ray stream)
- .mkv vcodec=mpeg2video and acodec=dca transcode to mpegts with audio=ac3 and I get 5.1
- .mkv vcodec=mpeg2video and acoded=ac3 will not play transcode to mpegts. Only option is to set targetACodec=mp3 which loses 5.1 channels.
Here is the snippet I am using:
- Code:
<Profile id="23" name="LG BD player" extendsProfileId="1">
<SubtitlesMimeType>text/srt</SubtitlesMimeType>
<MediaFormatProfiles>
<MediaFormatProfile mime-type="video/x-mkv">MATROSKA</MediaFormatProfile>
<MediaFormatProfile mime-type="video/x-msvideo" name="">AVI</MediaFormatProfile>
</MediaFormatProfiles>
<Transcoding>
<!-- re-encode mpeg-2 DTS audio to AC3 -->
<Video targetContainer="mpegts" targetACodec="ac3">
<Matches container="matroska" vCodec="mpeg2video" aCodec="dca" />
</Video>
<!-- ac3 streams are coming in as invalid when 5.1 - only mp3 seems to work -->
<Video targetContainer="mpegts" targetACodec="mp3">
<Matches container="matroska" vCodec="mpeg2video" aCodec="ac3" />
</Video>
</Transcoding>
</Profile>
Now, I have used handbrake as well as ffmpeg directly to try and re-encode the DVD mkv files to h264 video encoded streams with ac3 or dca audio codecs, but this sucks for two reasons:
(a) I am encoding the video stream again (I am assuming that MakeMKV is doing a pretty straight cut of the Video VOBs on initial encode) and while I have hardware to do the encoding (E-3 XEON quad-core processor with 16GB or ram) I am concerned about getting a good enough (ie. near equivalent) video stream while maintaining the 5.1 audio.
(b) As well, since my other device is a Sony BD player, this means any movie played there needs to be transcoded again beyond the audio codec. (since only the mpegts streams are supported)
Anyone have a solution or idea? Can we share some of the configs for this device? I have seen many different but so far only the one I posted above has worked to date on the mpeg2video streams.
-Jason