Carl,
Thanks for responding! - see inline comments:
On 2019-03-27 07:22, Carl Eugen Hoyos wrote:
2019-03-26 21:15 GMT+01:00, Philip Rhoades <[email protected]>:
I converted 21 JPGs to a video with:
Usually, converting jpgs with the image2 input works better than
concat.
Right - I will try that.
ffmpeg -f concat -i concat_demuxer1.txt -vf scale=1024:576 -r 29.97
This framerate is never correct, a possible frame rate is 30000/1001
Hmm . . I was just using what was reported for the frame for the MOVs .
. so using:
"-r 30000/1001"
is OK?
You can add the audio already in this step.
I did have a few attempts at that but couldn't get it working so I
resorted to a two-step process - I will have another look.
output1.mp4
I then added a silent audio track with:
ffmpeg -ar 44100 -acodec pcm_s16le -f s16le -ac 2 -channel_layout
2.1
The channel number and layout do not match.
Should it be just "stereo"?
-i /dev/zero \
-i output${i}.mp4 \
-vcodec copy \
-acodec aac \
-shortest output${i}_silent.mp4
I had another MOV file (fr=29.97) that I converted with:
newfn=`basename $fn .MOV`
ffmpeg -i $fn -vf scale=1024:576 ./${newfn}.mp4
When I concatenate them with (and other converted JPGs and MOVS on the
end) using:
ffmpeg -f concat -i inputs.txt -vcodec copy -acodec copy \
2019-03-22_#1_XR_ClimateEmergencyDeclarationDayNSW_LoRes.mp4
the concat succeeds OK but when I play the video, the audio is OK but
then when it gets to the converted MOV section, people are moving in
slow motion . .
Another odd thing, the first 21 converted JPGs at 4 sec each correctly
shows 84 sec when viewed with mpv but when the converted MOV starts it
jumps to ~3m 50s . .
So there is at least one problem but maybe two? Can anyone tell me
what
I am missing?
You may have to re-encode, feel free to provide the complete, uncut
console output.
OK, if you can respond to my questions above and if those changes don't
improve the situation - I will supply the output.
Thanks!
Phil.
--
Philip Rhoades
PO Box 896
Cowra NSW 2794
Australia
E-mail: [email protected]
_______________________________________________
ffmpeg-user mailing list
[email protected]
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
[email protected] with subject "unsubscribe".
