[FFmpeg-devel] [PATCH] avcodec/mjpegenc_common: always store JFIF, idependent of the aspect ratio

[Andrey Utkin]

2014-07-15 21:39 GMT+03:00 Andrey Utkin <andrey.krieger.utkin at gmail.com>:
> 2014-07-15 19:16 GMT+03:00 Nicolas George <george at nsup.org>:
>> Le septidi 27 messidor, an CCXXII, Andrey Utkin a écrit :
>>> Thanks, with this change streaming HTTP MJPEG stream into browsers
>>> work (with inserting boundaries, which is easy for scripting).
>>
>> Can you share your test procedure please?
>
> I'll work on providing it tomorrow.

Now i see i was wrong about the difference. But still, for the
interest of others, I'll provide HTTP MJPEG streaming example script.
https://dl.dropboxusercontent.com/u/43104344/mjpeg.php
https://dl.dropboxusercontent.com/u/43104344/page.php

Chromium browser doesn't playback produced HTTP MJPEG stream by direct
URL, but it plays it fine the stream referenced from <img> tag on HTML
page. That may be what caused my confusion. Firefox plays the produced
streams by direct URL. All above doesn't depend on FFmpeg being
patched with this patch.
However, I have upgraded a lot of packages on my PC yesterday, so
Chromium could get upgraded, causing behaviour change.
Also maybe the script is somewhat incorrect, and Chromium actually
plays (correct) streams by direct URLs.
If you're interested to test your browser, feel free to try
http://whdd.org/mjpeg.php
http://whdd.org/mjpeg.php?patched=1
http://whdd.org/page.php
http://whdd.org/page.php?patched=1

Still the patch slightly improves things - now the reliable "start
marker" can be longer (see in script).

-- 
Andrey Utkin