How to create the Mjpeg video with frame length?

[chichunchen]

I want to try specify other video and I use FFmpeg to convert a .mp4 file to .mpeg using
ffmpeg -i rhino.mp4 -c:v mjpeg -q:v 3 -huffman optimal -an output.Mjpeg, however, this command do not specify the frame length in the first five bytes. So my problem is that how do you create the Mjpeg with the frame length, thanks!

[mutaphore]

The standard Mjpeg frame length might be different, for example this page says frame length is 11 http://www.cajunbot.com/wiki/images/7/71/USB_Video_Payload_MJPEG_1.1.pdf. May have to try different values of the frame length to get it to play.

[josecleiton]

I've created a help program to convert mjpeg into mjpeg with 5 bytes frame length prefix. Here

go run converter.go in.mjpg out.mjpg

[sagivbonker]

hi
You used a Mjpeg file in your project.
I can not find such a file on the Internet.
Also, is it possible to transmit an MP4 file?
I would be happy if you can send me some Mjpeg files for streaming .
How can I find a mjpeg file?

Thank you very much!

[josecleiton]

hi
You used a Mjpeg file in your project.
I can not find such a file on the Internet.
Also, is it possible to transmit an MP4 file?
I would be happy if you can send me some Mjpeg files for streaming .
How can I find a mjpeg file?

Thank you very much!

You need to convert mp4 to mjpeg (using ffmpeg) then convert from modern mjpeg to 5-length mjpeg.

[sagivbonker]

Hi I converted the file to mjpeg But,That I run go run converter.go in.mjpg out.mjpg I get the following message: There is a problem with "go" [image: WhatsApp Image 2020-11-01 at 18.12.42.jpeg] בתאריך יום א׳, 1 בנוב׳ 2020, 17:00, מאת José Cleiton ‏< notifications@github.com>:

…

You need to convert mp4 to mjpeg (using ffmpeg) then convert from modern mjpeg to 5-length mjpeg. — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#9 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARSJMIRCUU2V5XTIHX5FRHTSNVZX3ANCNFSM4FG3X55Q> .

[sagivbonker]

[image: WhatsApp Image 2020-11-01 at 18.28.51.jpeg] ‫בתאריך יום א׳, 1 בנוב׳ 2020 ב-18:14 מאת שגיב בונקר <‪sagiv928@gmail.com ‬‏>:‬

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Hi I converted the file to mjpeg But,That I run go run converter.go in.mjpg out.mjpg I get the following message: There is a problem with "go" [image: WhatsApp Image 2020-11-01 at 18.12.42.jpeg] בתאריך יום א׳, 1 בנוב׳ 2020, 17:00, מאת José Cleiton ‏< ***@***.***>: > You need to convert mp4 to mjpeg (using ffmpeg) then convert from modern > mjpeg to 5-length mjpeg. > > — > You are receiving this because you commented. > Reply to this email directly, view it on GitHub > <#9 (comment)>, > or unsubscribe > <https://github.com/notifications/unsubscribe-auth/ARSJMIRCUU2V5XTIHX5FRHTSNVZX3ANCNFSM4FG3X55Q> > . >

[sagivbonker]

Hii I still have a problem בתאריך יום א׳, 1 בנוב׳ 2020, 18:29, מאת שגיב בונקר ‏<sagiv928@gmail.com>:

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[image: WhatsApp Image 2020-11-01 at 18.28.51.jpeg] ‫בתאריך יום א׳, 1 בנוב׳ 2020 ב-18:14 מאת שגיב בונקר ***@***.*** ‬‏>:‬ > Hi > I converted the file to mjpeg > But,That I run go run converter.go in.mjpg out.mjpg > I get the following message: > There is a problem with "go" > [image: WhatsApp Image 2020-11-01 at 18.12.42.jpeg] > > בתאריך יום א׳, 1 בנוב׳ 2020, 17:00, מאת José Cleiton ‏< > ***@***.***>: > >> You need to convert mp4 to mjpeg (using ffmpeg) then convert from modern >> mjpeg to 5-length mjpeg. >> >> — >> You are receiving this because you commented. >> Reply to this email directly, view it on GitHub >> <#9 (comment)>, >> or unsubscribe >> <https://github.com/notifications/unsubscribe-auth/ARSJMIRCUU2V5XTIHX5FRHTSNVZX3ANCNFSM4FG3X55Q> >> . >> >

[josecleiton]

The util that i've linked expects an regular video and convert it to mjpeg and to 5-length mjpeg
Down here is another one that only convert standard mjpeg to 5-length

https://gist.github.com/josecleiton/336e4fd317aa39629b76915cb8ce45c5

[sagivbonker]

hiI was trying to run the new code And I received the following message: I put the mjpeg file in the same folder Thank you Sagiv בתאריך יום ב׳, 2 בנוב׳ 2020, 22:54, מאת José Cleiton ‏< notifications@github.com>:

…

The util that i've linked expects an regular video and convert it to mjpeg than to 5-length mjpeg Down here is another one that only convert standard mjpeg to 5-length https://gist.github.com/josecleiton/336e4fd317aa39629b76915cb8ce45c5 — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#9 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARSJMIUHYPHMEQOW6HA3WPDSN4MBHANCNFSM4FG3X55Q> .

[sagivbonker]

Hi I was able to successfully perform the file conversion But in the code:https://github.com/mutaphore/RTSP-Client-Server The video runs for 2 seconds and stops what can we do ? Do you know what the problem is? thank you very much Sagiv ‫בתאריך יום ב׳, 2 בנוב׳ 2020 ב-22:54 מאת ‪José Cleiton‬‏ <‪ notifications@github.com‬‏>:‬

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The util that i've linked expects an regular video and convert it to mjpeg than to 5-length mjpeg Down here is another one that only convert standard mjpeg to 5-length https://gist.github.com/josecleiton/336e4fd317aa39629b76915cb8ce45c5 — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#9 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ARSJMIUHYPHMEQOW6HA3WPDSN4MBHANCNFSM4FG3X55Q> .