mp4 from HTTP Streaming is broken when the camera codec is MJPEG

Answered

Permanently deleted user

June 11, 2020 20:55 Edited

I have 3 IP cameras and I set the camera' codec to MJPEG, H264, and H265. I used Direct download for "mkv" and "ts". I used HTTP Streaming for "webm", "mpegts", "mpjpeg" and "mp4". I could get a valid video file for "mkv", "webm" and "mpjpeg" only. 

mp4 video is generated when the camera codec is H264 or H265. 

curl "http://admin:baba123@192.168.100.150:7001/media/16f840bd-f274-c678-27db-c82029a4c72f.mp4?pos=2020-06-06T10:09:55.126125&endPos=2020-06-06T10:10:05.126125" --output 16f840bd-f274-c678-27db-c82029a4c72f_M1.mp4

The file size is 854 bytes only.

ffprobe output shows the bellow error.

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x562119f4cc80] Could not find codec parameters for stream 0 (Video: mjpeg (mp4v / 0x7634706D), none(bt470bg/unknown/unknown), 1920x1080): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options

version: 4.0.0.29987
Platform: linux_arm64

IP camera: AXISM2025LE

 

(1)mp4 output is not supported when a camera codec is MJPEG. Is this true?

(2)What is the best format if I want to make a video clip?

I guess mkv will be the best because NxWitness media server seems recording videos in mkv with original codec. But I need to convert it to mp4 by my program in the case.

 

I am adding both files here. mkv and mp4.

MKV

http://www.galactica.world/tmp/16f840bd-f274-c678-27db-c82029a4c72f_H1.mkv

MP4

http://www.galactica.world/tmp/16f840bd-f274-c678-27db-c82029a4c72f_M1.mp4

If I convert the mkv file by ffmpeg, the converted mp4 is OK.

 

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  Andrey Terentyev

  • Network Optix team

  June 15, 2020 12:20

  Hello SHUNSUKE BABA ,

  It is a bug. Has been fixed. Fix will be included to version 4.1

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  Permanently deleted user

  June 17, 2020 02:38

  Is the bug-fixing done not only for mp4 but also for ts and mpegts ?

  When will the version 4.1 released?

   

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