Hi Carl,
Just now gone through the documentation, and got know -r used for FPS. So I had
made changes and executed the command as follows,
but I got the same following errors while playing using ffplay. Kindly please
help me in this regard.
Command:
ffmpeg -f alsa -thread_queue_size 1024 -i hw:0 -f video4linux2 -i /dev/video0
-c:a aac -t 0:10 -segment_time 00:00.040
-f segment sample-%003d.aac -c:v libx264 -s:v 640x480 -t 0:10 -r 25 -g 1
-segment_time 00:00.040 -f segment frame-%003d.h264
Video Error:
frame-000.h264: Invalid data found when processing input 0B f=0/0
nan : 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
frame-001.h264:
[h264 @ 0x7f1220000b80] Format h264 detected only with low score of 1,
misdetection possible!
[h264 @ 0x7f12200022c0] non-existing PPS 0 referenced 0B f=0/0
[h264 @ 0x7f12200022c0] non-existing PPS 0 referenced 0B f=0/0
[h264 @ 0x7f12200022c0] decode_slice_header error
[h264 @ 0x7f12200022c0] no frame!
[h264 @ 0x7f1220000b80] decoding for stream 0 failed
[h264 @ 0x7f1220000b80] Could not find codec parameters for stream 0 (Video:
h264, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, h264, from 'frame-001.h264':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: h264, none, 25 tbr, 1200k tbn, 50 tbc
[h264 @ 0x7f1220005d20] non-existing PPS 0 referenced
[h264 @ 0x7f1220005d20] decode_slice_header error
Audio Error: (Audio should play for 40ms, but window pop-up plays for 13.16s)
[aac @ 0x7f0ce8000b80] Format aac detected only with low score of 1,
misdetection possible!
[aac @ 0x7f0ce8000b80] Estimating duration from bitrate, this may be inaccurate
Input #0, aac, from 'sample-000.aac':
Duration: 00:00:00.04, bitrate: 109 kb/s
Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 109 kb/s
13.16 M-A: 0.000 fd= 0 aq= 0KB vq= 0KB sq= 0B f=0/0
Thanks & Regards,
Vijay Rakesh.
> On 09-Jan-2021, at 10:43, Vijay Rakesh Munganda
> <[email protected]> wrote:
>
> Hi Carl,
>
> Thanks for the reply. -f 25 for encoding the video in 25 FPS (because 1000
> milliseconds / 40 milliseconds = 25 frames) and tell FFmpeg to use every
> frame as a key frame (-g 1).
>
> Thanks & Regards,
> Vijay Rakesh
>
>>> On 09-Jan-2021, at 01:04, Carl Eugen Hoyos <[email protected]> wrote:
>>>
>>
>>
>>> Am 08.01.2021 um 17:17 schrieb Vijay Rakesh Munganda
>>> <[email protected]>:
>>>
>>> ffmpeg -f alsa -thread_queue_size 1024 -i hw:0 -f video4linux2 -i
>>> /dev/video0 -c:a aac -t 0:10 -segment_time 00:00.040 -f segment
>>> sample-%003d.aac -c:v libx264 -t -f 25 -g 1 0:10 -segment_time 00:00.040 -f
>>> segment frame-%003d.h264
>>
>> Complete, uncut console output missing.
>> -f 25 looks wrong, did you mean -r 25?
>>
>> Carl Eugen
>> _______________________________________________
>> 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".
_______________________________________________
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".
