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Makemkv solo a star wars story12/27/2023 It can modify the time codes of the audio track to compensate it (and, if I'm right, it's exactly what the -append-mode option does, or doesn't do). I think that MkvToolnix is smart enough to take that small audio delay into account when it appends two video parts together. (BTW, it's why there is often a small audio delay applied when you cut a video (audio delay that can be shown with MediaInfo for example). But usually, the audio frame is very short, and the sync problem is therefore hardly audible (a few ms). That can introduce a slight sync problem between the two streams. In theory, the compressed audio formats are also divided by "frames", and therefore, the cut is not necessarily exactly at the same point in the video and audio streams. In case I have misunderstood or missing something, please correct You are right. I wouldn't know how far apart two sequential "major sync frames" are. When one'd cut out a videosection, I can imagine that - timewise - the cutting-point of TrueHD does not exactly match where video is cut at its I-frame. I remember something about cutting video with TrueHD.Īccording to this link I understand TrueHD can only be cut at the "major sync frames", comparable to videocutting at I-frames only. The result would have been exactly identical, but with a full guarantee of success (and a bit less disc space necessary).ģ) knowing the exact frame number to crop put, I used MKVToolnixGUI under "Multiplexer / Destination / Split / After Frame number" section, putting those values, so I obtained the perfectly trimmed MKVsĤ) joined the 2 trimmed MKVs with MKVToolnixGUI "Multiplexer / Append" tool, remuxing at the same time my native language audio dubbed 7.1 track and also the desired subtitles tracks, I checked that all was perfectly synced and thankfully it was. ![]() My method is similar, but instead of cutting the original BD stream, I suggested to cut the final, re-encoded MKV, because it was possible to ensure that an i-frame will be placed at the cut point (by editing the qpfile before the encoding). Luckily, it seems that it's the case with Avatar 2 (as it's often the case when there is an abrupt change in the video, as I have explained above), and your method worked fine. You have no guarantee that there is an i-frame at the point you need to cut them. Because your two MKV made with MakeMKV are already compressed, you cannot cut them everywhere. (However, there is no quality loss, if it's what you mean.) A really uncompressed movie would have consumed much, much more disc space. ![]() MakeMKV doesn't re-compress the video, but that doesn't mean that the MKV it produces is not compressed. First, the original BD is already compressed. Thanks for sharing your method, and especially for the Time add-on for VLC trick.
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