[Nayan Kapadia]

Hi Rampe,

I have modified my command arguments and used presets files as per your suggestion. I have used below command:

ffmpeg.exe -y -i -f mpegts -an -vcodec libx264 -r 30 -an -b 100k -s 320×240 -bt 100k -qmax 51 -crf 22 -vpre “C:\ffmpeg\ffpreset\libx264-lossless_ultrafast.ffpreset” op.ts

But in this case also,transcoding stops after some time.Do you have any further suggestion? Please advice.

Thanks
NBK

[Nayan Kapadia]

Thanks for your reply.
I am using below command:

ffmpeg.exe -i rtsp://192.168.0.17/main.mp4 -f mpegts -vcodec libx264 -r 30 -an -b 100k -s 320×240 -keyint_min 10
-i_qfactor 0.71 -bt 10k -maxrate 100k -bufsize 1435k -qcomp 0.6 -qmin 10 -qmax 30 -qdiff 4 -re -shortest -me_method zero -sameq -pass 1 -isync -b_strategy 0 -flags2 fast -dct fastint -g 15 oo.ts

output on command line after stream stops:

frame=222902 fps= 6 q=30.0 size= 241576kB time=7428.70 bitrate= 266.4kbits/s d
frame=222902 fps= 6 q=30.0 size= 241576kB time=7428.70 bitrate= 266.4kbits/s d
frame=222902 fps= 6 q=30.0 size= 241576kB time=7428.70 bitrate= 266.4kbits/s d
frame=222902 fps= 6 q=30.0 size= 241576kB time=7428.70 bitrate= 266.4kbits/s
dup=163163 drop=525170

Here, duplicate frame nos are stopped while drop frames are increasing continously. And I am not receiving any error while it stops.

Stop Time is not fixed , it varies. I have played Live stream from camera in vlc but in that also stream stops after irregular time.

Waiting for your reply.

THANKS,
NBK

[Nayan Kapadia]

Hi,
I am accessing H.264 stream using ffmpeg on windows.I want to use -vcodec copy and -f mpegts and save output in a file.This is my requirement.

For example:

ffmpeg.exe -i rtsp://wisedvin:wisenec2468@192.168.0.102:7070 -v
codec copy -vbsf h264_mp4toannexb -f mpegts -b 30k -s 320×240 -bt 10k -maxrate 100k oo.ts

When I start this command it give me below message on commandline.

Press [q] to stop encoding
[mpegts @ 01de0050]h264 bitstream malformated, no startcode found, use -vbsf h264_mp4toannexb
av_interleaved_write_frame(): Operation not permitted

Please giude me.

Thanks,
NBK

[Nayan Kapadia]

Thanks for your reply and support.I am working on windows and also i need h.264 output format and .ts file container. So i am confused how to make this work for windows.If you have any idea for this?

Thanks
NBK

[Nayan Kapadia]

Thank you very much. I will try this. Do you have any luck in this matter?

Thank you,
Nayan Kapadia

[Nayan Kapadia]

Thanks fro your reply.

NBK

[Nayan Kapadia]

I want to update and overwrite image from live stream continously and want to display in server.

Thanks,
NBK

[Nayan Kapadia]

Thanks for your reply. I can generate image only once not able to update image.

Thank you,
NBK

[Nayan Kapadia]

Thank you for your reply. I want to do MP4 to H.264 conversion using C program in ffmpeg. Do you have any idea/sample code for that?

Thank you,
Nayan Kapadia