Hi All,
Thanks for the reply. So I think there is no straight forward to achieve
variable fps, till now I've no success but I'll keep looking into it.
However if someone has more information on variable fps and how to use
repeat_pict field. Please share.
Thanks and Regards,
Pradeep
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Hi All,
Thanks for all your suggestion. I'm considering using audio to synchronizing
video instead of other way round. ìThough this may lead to frame dropping it
is fine for me as long as audio sound good during play.
For final display frames are converted into Iplimage image pointer and then
Hi,
One of the things which I couldn't mention in my previous mail was that in
my application.
I've two video decoder one is based on ffms2 (a wrapper over ffmpeg/libav)
and the other is based on ffmpeg.
Initially I had just ffmpeg based video loader but since I was facing issues
with seeking I
Hi,
I'm working on application which uses both ffmpeg and ffms (wrapper on
ffmpeg) for decoding video file.
The decoding audio and video is then played on user interface.
For low resolution video till 640x360p both audio and video works fine and
frame rate is maintained as per source file.
Hi,
While encoding video file using ffmpeg I'm getting this warning
No accelerated colorspace conversion found from yuv420p to bgr24.
i think it is coming from sws_scale as I'm using this for conversion.
Can someone tell me what could be the reason for this warning?
Though things are working
Hi,
While encoding video file using ffmpeg I'm getting this warning
No accelerated colorspace conversion found from yuv420p to bgr24.
i think it is coming from sws_scale as I'm using this for conversion.
Can someone tell me what could be the reason for this warning?
Though things are working
I set av_log_set_level(AV_LOG_QUIET), though most of the message are disabled
but still I'm getting just one message at the start. It normal or this can
be disabled too.
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I've used av_interleaved_write_frame() for writing to .avi file. I'm facing
this problem only for raw video.
For AV_CODEC_ID_MPEG4 it works fine.
Here are the two functions which I'm using for writing video and audio
frames.
//Member function to video frame
void
Hi
I'm trying to save video giev rtsp link using ffmpeg. The video copy
continues for some time. But after 5mins it fails with unknown. I'm able to
save only part of video. Is there any default timeout?
My command
ffmpeg -i rtsp:://input_video_link outputfile.3gp.
Console log:
warning,
Hi Brad,
Actually at that time I didn't explore much and since I already had my own
buffer class I quickly reused it. But if there are some other better
facility available in ffmpeg like libavcodec/audio_frame_queue.c I suggest
you cantry that.
Thanks
Pradeep
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I had similar issue sometime back. I matched the number of sample to that of
codec context. I have used buffering scheme and which still working for me,
so I didn't explore any other option.
I used intermediate buffer to keep the remaining samples and pass them to
encoder when number of sample
Hi,
As a part of encoding decoded audio packets, I'm using
avcodec_fill_audio_frame(). I'm passing allocated AVFrame pointer to along
with buffer containing the decoded samples and other parameters number of
channels, sample format, buffer size. Though the encoding is working fine
I'm not able to
Ok after successively disabling the code I found that memory leak is coming
from av_interleaved_write_frame(), even though I'm using av_free_packet, it
is still there.
I tried to use av_destruct_packet just before av_free_packet but then my
application is crashing while calling av_destruct_packet.
Hi Kalileo
Thanks for the reply. I've noted that If I just disable
av_interleaved_write_frame and keep the remaining code as it is then there
is no memory leak. The memory for AVPacket is getting allocated in
avcodec_encode_audio2 and if I use av_free_packet with destruct field set to
Hi,
I'm getting memory leaks in avcodec_find_encoder. Although I'm cleaning the
resources properly
still I'm not able to get rid of the leak. By successive commenting the code
I found that memory leaks happen only after the call of
avcodec_find_encoder(). I've tried my code with different video
I think it also depend upon the codec which you are using. If codec support
that particular then probably you may be able to set. Though I'm bit new to
ffmpeg most of the codec support just on sample format. For example AAC
supports AV_SAMPLE_FMT_FLTP. AC3 has two variant ac3 and ac3_fixed.
I've faced a similar problem before. I was just doing stream copy i.e
changing the container format to avi.
I think you care correct your pts and dts may not be correct. I too ended
up playing with various combination.
Try following. it worked for me. This is just for stream copy which involves
Hi,
I'm trying a small program which cuts clip from video file given start and
end time. For this I'm doing a simple stream copy of both audio and video
stream. I just copied the pts and dts from input packet to output with
proper re-scaling. However the output which I'm getting is blank for some
Thanks Nicolas for the brief explanation. It has helped me to understand
better.
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Hi
I'm trying to encode decoded audio sample to an avi file. The audio samples
are decoded from different file. So I've both input and output file. The
decoded audio samples are in AV_SAMPLE_FMT_FLTP (float planar) in one large
buffer. The first half contains channel 0 while second half of buffer
Hi Brad,
Have you found the solution to your issueof audio distortion. I'm also
facing a similar issue while encoding with AAC and this is happening for
same audio parameters sample rate: 44100, sample format: AV_SAMPLE_FMT_FLTP
and number of channels = 2. For mono it is working fine. So I guess
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