Hello,
I intend to use libav library for streaming mpeg-ts udp, given HW
encoded frame, but I'm unsure as to its latency. I have a very low
strict latency requirements.
I am interested in the encoder side only.
So, I would like to ask if the muxing/streaming of libav library also
does buffering. I
>
>> how to check in source code to see what's supported
>> in muxing/demuxing.
>
> The main problem is that there are general-purpose
> containers and containers that only support a limited
> number of codecs. mpeg-ts (and ps) is very restricted
> and you have to look into mpegtsenc.c to see what
Hello,
This is a general question only for help in understanding libavformat API.
I am trying to understand the demuxing example in FFmpeg wiki.
while (av_read_frame(fmt_ctx, &pkt) >= 0) {
{
if (pkt.stream_index == video_stream_idx) {
/* decode video frame */
ret = avcodec_deco
On Wed, Apr 15, 2015 at 5:22 PM, Carl Eugen Hoyos wrote:
> Ran Shalit writes:
>
>> I would please like to add that I see that
>> ffmpeg support mpjpeg container.
>
> Yes.
>
> This container only supports jpg afaict,
> not jpeg2000.
>
Thank very much for t
>> how to check in source code to see what's supported
>> in muxing/demuxing.
>
> The main problem is that there are general-purpose
> containers and containers that only support a limited
> number of codecs. mpeg-ts (and ps) is very restricted
> and you have to look into mpegtsenc.c to see what is
On Wed, Apr 15, 2015 at 12:44 PM, Carl Eugen Hoyos wrote:
> Ran Shalit writes:
>
>> I am intereted in mux.demux of (jpeg2000 frames ), but
>> since I got no absolute answer for that
>
> I don't understand: Muxing j2k in mpegts is currently
> unsupported, I
Hello,
Is there some way I can check which codec are supported in muxing/demuxing ?
I didn't find it documented.
Should I do some grep or somthing similiar ? Can anyone one please
give some tips. I am intereted in mux.demux of (jpeg2000 frames ), but
since I got no absolute answer for that, I try
On Mon, Apr 13, 2015 at 1:36 PM, Carl Eugen Hoyos wrote:
> Ran Shalit writes:
>
>> I see that jpeg 2000 appears in list of supported
>> encoder/decoder: Does it mean it can be used also be
>> streamed using transport stream (mpeg-ts) ?
>
> I don't think muxing
Hello,
I see that jpeg 2000 appears in list of supported encoder/decoder:
Does it mean it can be used also be streamed using transport stream (mpeg-ts) ?
Thank you,
Ran
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10 Sep 2014, at 16:52, Ran Shalit wrote:
>
> > On Wed, Sep 10, 2014 at 4:15 PM, Peter Ross wrote:
> >> On Wed, Sep 10, 2014 at 03:11:25PM +0300, Ran Shalit wrote:
> >>> On Wed, Sep 10, 2014 at 2:44 PM, Peter Ross wrote:
> >>>> On Tue, Sep 09, 2014
On Wed, Sep 10, 2014 at 4:15 PM, Peter Ross wrote:
> On Wed, Sep 10, 2014 at 03:11:25PM +0300, Ran Shalit wrote:
>> On Wed, Sep 10, 2014 at 2:44 PM, Peter Ross wrote:
>> > On Tue, Sep 09, 2014 at 04:23:24PM +0300, Ran Shalit wrote:
>> >> >> Are these internal
On Wed, Sep 10, 2014 at 2:44 PM, Peter Ross wrote:
> On Tue, Sep 09, 2014 at 04:23:24PM +0300, Ran Shalit wrote:
>> >> Are these internal KLV packets sent only
>> >> once at the start of transcoding or can be sent during transcoding
>> >> more than onc
>> Are these internal KLV packets sent only
>> once at the start of transcoding or can be sent during transcoding
>> more than once ?
>In MXF each *video frame* is stored within an individual KLV packet.
>So yes, 'more than once'!
Is it possible to retrieve or view the KLV metadata in ffplay ? i.
>
> KLV processing is _internal_ to mxfenc.c and mxfdec.c.
>
> -- Peter
Hi ,
One more on this if I may. Are these internal KLV packets sent only
once at the start of transcoding or can be sent during transcoding
more than once ?
Thanks!
Ran
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>
> Adding user metadata to MXF is not currently supported.
>
> KLV processing is _internal_ to mxfenc.c and mxfdec.c.
>
Hi Peter,
What is the internal metadata that MXF process ? Is there some way to
modify it to use user metadata instead?
Is KLV from user supported in any other formats (mpeg-ts
>>
>> Does libavformat supports SMPTE 336m for MPEG-TS or only for MXF ?
>
> 1. AV_CODEC_ID_SMPTE_KLV is supported by the MPEG-TS. libavformat can
> mux and demux SMPTE 336M *streams*.
>
> 2. There are no codecs for manipulating the AV_CODEC_ID_SMPTE_KLV packets.
>
> 3. The MXF format uses SMPTE 33
Hello,
Does libavformat supports SMPTE 336m for MPEG-TS or only for MXF ?
Thanks,
Ran
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