-
AVI to MOV: 21fps and 24fps
Hi everyone,
I’m having a strange issue with some old videos I exported in .avi when working on a windows based system and they were 25fps, but once I saved them as QT mov and then imported them in fcp it loads them as they’re 24fps or even 21fps !!! And just for some of them, others don’t do that change at all!
The result is the in and out point in the viewer show a part of the clip at 25fps, I drag it on the timeline and it still shows the same footage at 25fps, but when I export the edited timeline into a QT mov I got the video slipped because it was 21fps or 24fps!Is there a way to:
see on the timeline directly the slipped video
transform the 21fps and 24fps to 25 without quality loss
export the video without the slipping change
?thanks everyone,
A. -
4 Replies
-
Use compressor to turn your AVI in to 25 fps qt movies.
-
Ok I tried and it works, now fcp “sees” it as 25fps, but when editing only the audio is at sync, while the video is out of sync in the timeline, but in sync when I export the video. So my main problem is still I can’t have the avi file able for editing.
I’m still doubtful about:1) Why compressor understands both from the original avi file AND from the QTpro saved file that it is 25fps and not 24/21?
2) Why only some of the files I converted were wrongly interpreted by fcp?
3) Why after the conversion the new file according to fcp has one or two frames more than the original?
After some analysis, it seems it’s a problem of MB/sec rather than fps, that leads fcp to interpret the files with a wrong fps rate. I made a short list of the files with mpeg streamclip info function:
a) File converted to mov and interpreted by fcp as 24fps:
Stream: BETTE2.avi
Path: ~/Movies/old/avi 2 check/BETTE2.avi
Duration: 0:03:55
Data Size: 807.97 MB
Bit Rate: 28.83 Mbps
Video Tracks:
DV – PAL, 720 × 576, 25 fps, 27.30 Mbps
Audio Tracks:
16-bit Little Endian stereo, 48 kHz, 1.54 Mbps
Stream Files:
BETTE2.avi (807.97 MB)MOV [compressor]:
Stream: BETTE2-YT.mov
Path: ~/Movies/old/avi 2 check/BETTE2-YT.mov
Duration: 0:03:55
Data Size: 807.97 MB
Bit Rate: 28.83 Mbps
Video Tracks:
DV – PAL, 720 × 576, 4:3, 25 fps, 27.30 Mbps
Audio Tracks:
16-bit Little Endian stereo, 48 kHz, 1.54 Mbps
Stream Files:
BETTE2-YT.mov (807.97 MB)
fps okay, editing out of sync, export in sync with fcp audioMOV [QT]:
Stream: BETTE2.mov
Path: ~/Movies/old/avi 2 check/BETTE2.mov
Duration: 0:03:55
Data Size: 807.97 MB
Bit Rate: 28.83 Mbps
Video Tracks:
DV – PAL, 720 × 576, 4:3, 25 fps, 27.30 Mbps
Audio Tracks:
16-bit Little Endian stereo, 48 kHz, 1.54 Mbps
Stream Files:
BETTE2.mov (807.97 MB)
fps interpreted as 24, editing out of sync, export in sync with fcp audioFile converted to mov and interpreted by fcp as 21fps:
Stream: capriBTS.avi
Path: ~/Movies/old/avi 2 check/capriBTS.avi
Duration: 0:04:29
Data Size: 827.41 MB
Bit Rate: 25.78 Mbps
Video Tracks:
DV – PAL, 720 × 576, 25 fps, 24.24 Mbps
Audio Tracks:
16-bit Little Endian stereo, 48 kHz, 1.54 Mbps
Stream Files:
capriBTS.avi (827.41 MB)MOV [compressor]
Stream: capriBTSb.mov
Path: ~/Movies/old/avi 2 check/capriBTSb.mov
Duration: 0:04:29
Data Size: 827.41 MB
Bit Rate: 25.78 Mbps
Video Tracks:
DV – PAL, 720 × 576, 4:3, 25 fps, 24.24 Mbps
Audio Tracks:
16-bit Little Endian stereo, 48 kHz, 1.54 Mbps
Stream Files:
capriBTSb.mov (827.41 MB)
fps okay, editing out of sync, export in sync with fcp audioMOV [QT]:
Stream: capriBTS.mov
Path: ~/Movies/old/avi 2 check/capriBTS.mov
Duration: 0:04:29
Data Size: 827.41 MB
Bit Rate: 25.78 Mbps
Video Tracks:
DV – PAL, 720 × 576, 4:3, 25 fps, 24.24 Mbps
Audio Tracks:
16-bit Little Endian stereo, 48 kHz, 1.54 Mbps
Stream Files:
capriBTS.mov (827.41 MB)
fps interpreted as 21, editing out of sync, export in sync with fcp audioFile mov converted from avi which is interpreted correcly [ original avi and this mov have same info, just a slight MB difference in filesize. Mov file obtained opening the avi with QT and saving as mov.]:
Stream: Lotto Smorfia ORIGINAL.mov
Path: ~/Movies/old/mp4tobe/Lotto Smorfia ORIGINAL.mov
Duration: 0:06:07
Data Size: 1.28 GB
Bit Rate: 29.98 Mbps
Video Tracks:
DV – PAL, 720 × 576, 4:3, 25 fps, 28.45 Mbps
Audio Tracks:
16-bit Little Endian stereo, 48 kHz, 1.54 Mbps
Stream Files:
Lotto Smorfia ORIGINAL.mov (1.28 GB) -
Try using Cinema Tools to conform the erroneous clips to 25fps. All this will do is fix the Quicktime header that is causing the files to be played at the wrong frame rate.
Of course, if the files were converted improperly and actually are 21 & 24 fps, this will not really fix it, but its worth a shot.
-
I don’t understand.. if the QT header is wrong, why should it play correctly in QT and be recognized as 25fps by MPEG Streamclip? The same Cinema Tools reads it as 25fps..
Reply to this Discussion! Login or Sign Up