SomeJoe
8th January 2003, 07:01
Hello gents,
Running into an issue with a file I encoded into an .m2v. I'm doing my own material authoring here with DVD Maestro (was about to put this question in the authoring forum, but really it's an encoding issue), and I'm having a problem with how DVD Maestro sees the timecode of the .m2v file.
When I take my source .m2v file and import it into Maestro, it should show a duration of 1:30:26.25 (hh:mm:ss.ff). This is also what the duration of the exported video shows on the Adobe Premiere timeline. However, Maestro comes up with a duration of 1:30:21.13.
The difference is that 1:30:26.25 is an SMPTE Drop Frame timecode, which corresponds to real time. Maestro is showing the equivalent SMPTE Non-Drop Frame timecode (same number of frames = 162,643).
My question is, are the SMPTE timecodes embedded in the .m2v file by whatever encoder you use? And is this alterable? I'm using the Ligos LSX-MPEG LE encoder for Premiere (came with my Matrox RT2500 card). It doesn't seem to have any switch for setting the embedded timecode format. (I just took a look at CCE, and saw that it does have a "Drop Frame" setting, which presumably alters what type of timecode it embeds?)
This issue came about because when I imported my .m2v, I also imported my audio, which is .ac3 encoded by Soft Encode, with timecodes embedded. When I put both the video and audio into the Maestro timeline, Maestro complained that the timecode formats were not the same. The resulting DVD plays back perfectly, with no audio sync problems (expected, since the number of frames in the video and number of samples in the audio are perfectly matched), but I assume that without the timecodes matching, Maestro isn't able to benefit from the embedded timecodes in either elementary stream to keep them synchronized.
I have not tried recreating the .m2v with CCE yet (that's gonna be for the next project), but I just wanted to ask the question to make sure I'm on the right track here.
BTW, on a separate note, I'd like to compliment the Doom9 site and forum, as the wealth of information present here is invaluable. I'm pleased to have found it, and appreciative of the time and effort put into this site.
Running into an issue with a file I encoded into an .m2v. I'm doing my own material authoring here with DVD Maestro (was about to put this question in the authoring forum, but really it's an encoding issue), and I'm having a problem with how DVD Maestro sees the timecode of the .m2v file.
When I take my source .m2v file and import it into Maestro, it should show a duration of 1:30:26.25 (hh:mm:ss.ff). This is also what the duration of the exported video shows on the Adobe Premiere timeline. However, Maestro comes up with a duration of 1:30:21.13.
The difference is that 1:30:26.25 is an SMPTE Drop Frame timecode, which corresponds to real time. Maestro is showing the equivalent SMPTE Non-Drop Frame timecode (same number of frames = 162,643).
My question is, are the SMPTE timecodes embedded in the .m2v file by whatever encoder you use? And is this alterable? I'm using the Ligos LSX-MPEG LE encoder for Premiere (came with my Matrox RT2500 card). It doesn't seem to have any switch for setting the embedded timecode format. (I just took a look at CCE, and saw that it does have a "Drop Frame" setting, which presumably alters what type of timecode it embeds?)
This issue came about because when I imported my .m2v, I also imported my audio, which is .ac3 encoded by Soft Encode, with timecodes embedded. When I put both the video and audio into the Maestro timeline, Maestro complained that the timecode formats were not the same. The resulting DVD plays back perfectly, with no audio sync problems (expected, since the number of frames in the video and number of samples in the audio are perfectly matched), but I assume that without the timecodes matching, Maestro isn't able to benefit from the embedded timecodes in either elementary stream to keep them synchronized.
I have not tried recreating the .m2v with CCE yet (that's gonna be for the next project), but I just wanted to ask the question to make sure I'm on the right track here.
BTW, on a separate note, I'd like to compliment the Doom9 site and forum, as the wealth of information present here is invaluable. I'm pleased to have found it, and appreciative of the time and effort put into this site.