Den 31.10.2024 14:22, skrev Bouke / Videotoolshed:
>
>> On 31 Oct 2024, at 14:07, Ganesh.Irelan--- via
ffmpeg-user<[email protected]> wrote:
>>
>>> On 29 Oct 2024, at 15:16, Ganesh.Irelan--- via
ffmpeg-user<[email protected]> wrote:
>>>
>>> Hello
>>>
>>> I have .dv files captured from DV videotapes with vrecord. The .dv
files play fine in Quicktime Player 10 but are not supported by Premier Pro or
FCP. I want to wrap the DV stream from the .dv files into Quicktime MOV
(without transcoding) so they can be imported into Premier Pro. FFMPEG rewraps
the stream but when played in Quicktime, VLC, and Premier Pro there are narrow
black vertical bars on the left and right edges of the frame. It looks like
the production aperture 720x480 is being displayed instead of the clean
aperture 704x480 but that’s just a guess. Can someone tell me an FFMPEG
command that will result in MOV wrapped DV that displays without the vertical
borders?
>>>
>>> This is what I tried.
>>>
>>> 3137-Mac-Pro-DAM:~ kirelan$ ffmpeg -i 36058.dv -map 0 -c copy
https://linkprotect.cudasvc.com/url?a=https%3a%2f%2f36058_Rewrap.mov&c=E,1,MRkvkS39-zgTkJ-K5W4-UyKGIg2ThAghA0qSN2gma2vo3HBa4PNwZ2_dO8yIrVCim8Zw4OLBPuu2Haf0hdVK4LhqcreHbwIlvG0cgCXuCGyYlOEVpLhh&typo=1
>> _______________________________________________
>>
>>> On 10/29/24, 10:28 AM, "ffmpeg-user on behalf of Bouke /
Videotoolshed"<[email protected] on behalf of
[email protected]> wrote:
>>> Try adding -aspect 4:3 (or 16:9 of course)
>>> Bouke
>> _______________________________________________
>>
>> Thanks for your reply. A dv wrapped .mov file was created but it only
contained the first 17 minutes of the 39 minute source. The resulting file was
viewable and did not have the unwanted vertical bars but, ultimately, the
conversion failed.
> No clue in your case, but a captured DV tape can contain glitches that
might interfere.
> Watch the DV stream around the part where the re-wrap stopped.
>
>
> Bouke
_______________________________________________
>On 10/31/24, 11:24 AM, "ffmpeg-user on behalf of Terje J. Hanssen"
><[email protected] on behalf of [email protected]> wrote:
> Sometimes it may help to first reset the timestamps:
> fmpeg -i 36058.dv -reset_timestamps 1 -c copy 36058_reset.dv
> Terje J. H
_______________________________________________
Apparently FFMPEG only writes a CLAP atom for certain codecs and DV is not one
of them. That explains why the production aperture is displayed when I play
back a DV wrapped MOV file created by it. Using JES Extensifier I manually
entered a CLAP atom into one of the files created by FFMPEG and it displays
correctly in playback. Is there a way to manually specify that a CLAP atom be
written during the conversion with FFMPEG?
Thank you
Kevin
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