Jack Fox
Forum Replies Created
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Okay, I changed the maximum bit rate (20 to 32), and that helped. Now I have a few skips in the first couples seconds, during the bars and tone, and that’s it. Thanks. Why I’m having any problem with the audio is still a mystery.
jmf
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Tried streamclip, same problem.
jmf
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It plays fine in the timeline, but the same problem is experienced by all computers after conversion. My concern is my computer not having enough horsepower during conversion. Is there a way to make an mpeg2 file without compression the sound. The project is a standard definition TV show. (see conversion details below)
jmf
Name: Program Stream
Description: MPEG-2 Program Stream with MPEG audio at 48 kHz. Settings based off the source resolution and frame-rate.
File Extension: mpeg
Estimated file size: 3.24 GB
Type: MPEG-2 program stream
Video Encoder
Format: M2V
Width: 720
Height: 480
Pixel aspect ratio: NTSC CCIR 601/DV
Crop: None
Padding: None
Frame rate: 29.97
Frame Controls: Automatically selected: Off
Start timecode: 00:00:00:00
Aspect ratio: 4:3
Field dominance: Progressive
Average data rate: 15 (Mbps)
2 Pass VBR enabled
Maximum data rate: 20 (Mbps)
High quality
Best motion estimation
Closed GOP Size: 15, Structure: IBBP
Audio Encoder
Format: MPEG
Sample Rate: 48.000kHz
Channels: 2
Bits Per Sample: 16 -
Okay, I will start with full quality (40 mbps) and see what the presenting station suggests.
jmf
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Why are the blanks so much more expensive compared to the miniDV blanks I use to record the show? Why are the $4 miniDV tapes good enough to transport the media but I need a tape worth 30 times more to deliver the show to the uplink house?
jmf
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I think my show is 26:46 and it is, but my timecode (after conversion) suggests it is longer, which it is not. I do understand that 23.98 is short for 23.976, but I’m wondering if some software has rounded up. When I put a timecode track on the media before exporting I get the same timecode that is shown in the FCP timeline after export to quicktime movie, even though the frames and timecode detected on playing is displayed as longer (aproximately 6 frames). The difference between the original (40702) and the export (40708) on a 28:15:22 sequence is the same ratio as that of 23.976 and 23.98.
jmf
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Shane,
You said 23.98 is non-drop only, then why does the calculator that you recommend have a 23.98 drop option? I wonder if there are any other people or devices making the same mistake.
jmf
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Thanks for the homework assignment Mark.
The difference I am seeing is the same difference between non-drop and drop frame.* Looking at my FCP timeline sequence settings, I see the drop option is grayed out in the “Timeline Options” tab. It would appear that the timeline is non-drop frame and quicktime is drop frame. This sounds like a break through but does not explain the frame count difference.
*If I put 28:45;23 as non-drop frame in the the calculator that Shane recommended, and convert to drop frame I get exactly the timing shown by quicktime by one frame (28:47;16).
If this is the problem, the next question is how to change the fcp sequence to drop frame or quicktime to non-drop frame.
jmf
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If I put 26:46:00 into 23.98 non-drop and switch to 29.97 drop I get a few minutes different, and the same if I put 26:46:00 into 29.97 and change to 23.98 non-drop. The difference I’m seeing is a few seconds at most not minutes.
jmf
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If 23.98 is non-drop only, why does the calculator you recommend have a “23.98 drop” frame option?
jmf