[gst-devel] Are there Anything else needed between 'filesrc' and 'rtpmp4vpay' ?

[Deeptendu Bikash]

Hi,

You cannot directly use payloader over a mp4 file. A mp4 file contains,
other than the raw video data, meta information in a format prescribed in
ISO/IEC-14496 (parts 12 and 14); so you need to have a mp4 file parser that
can extract the elementary streams and feed to the payloader. I do not know
if there is a mp4 parser plugin in gstreamer, but there is a avi parser. So
if you have a avi file you can use avidemux or ffdemux_avi for the purpose.
Otherwise, use some other tool like mp4creator or gpac to extract the
elementary streams offline from your mp4 file and feed to the payloader.

Wim/other gst developers, please correct me if I'm wrong.

Regards,
Deeptendu

On 9/4/06, Fu Hao <fu585 at oki.com> wrote:
>
>  Hello, Everyone!
>
>     I'm a freshman here.
>
>     Recently I have a problem about 'filesrc' element and rtpXXXpay
> element.
>
>     When I use this command:
>
>         gst-launch  videotestsrc ! ffenc_mpeg4 ! rtpmp4vpay ! rtpmp4vdepay
> ! ffdec_mpeg4 ! xvimagesink
>
>     I can see the video image, and all is OK.
>
>     Then, I want to change the 'videotestsrc' to 'filesrc',  and set the
> 'location' of 'filesrc' as a '*.mp4'.
>
>     The command looks like this:
>
>         gst-launch filesrc location=/home/Dell.mp4 ! rtpmp4vpay !
> rtpmp4vdepay ! ffdec_mpeg4 ! xvimagesink
>
>     The Error is :  "subclass did not specify clock_rate."
>
>     I do not know where is wrong. Can you help me ?
>
>     Thanks !
>
>
>
>
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