On 8/3/2017 2:24 AM, James Girotti wrote:
On Wed, Aug 2, 2017 at 3:09 PM, tasos <[email protected]> wrote:
Hello again.
A lot of information and i'm trying to process them.
I know a few basic things about video processing in general.
Anyway,the specific dvb source channel is quite strange or at least this
is how it looks
to me.
Is this the ffprobe output from the file or your DVB capture device? I
politely request you provide full command lines and output in the future.
That was from the file.
Can you dump directly from the device to file without using ffmpeg? I.E.:
Yes i can.
That should make troubleshooting much easier! Glad you're able to do that.
ffprobe -v error -select_streams v:0 -show_entries \
stream=r_frame_rate,avg_frame_rate -of default=nw=1 ./foo.ts
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] SPS unavailable in decode_picture_timing
[h264 @ 0x4088420] non-existing PPS 0 referenced
[h264 @ 0x4088420] decode_slice_header error
[h264 @ 0x4088420] no frame!
[h264 @ 0x4088420] mmco: unref short failure
r_frame_rate=25/1repeated 1 times
avg_frame_rate=25/1
r_frame_rate=25/1
avg_frame_rate=25/1
Vlc reports 25fps! And btw the video is interlaced.
Based on that it appears that your device is outputting an h264 video
stream @ exactly 25 fps, did you run the other command I recommended to get
the time base values?
Yes and now i think i can get more info from those commands.I mean what
happens when fps change according to time.
The fact that i used avi doesn't matter.I mean i could use something else.
Do you recommend mkv ?
I personally use MKV as much as possible, it supports the widest range of
audio/video/subtitle formats. I can always remux to another container if
absolutely needed. The only negative I have come across is the metadata
implementation/specification. From what I've read different programs tend
to use slightly different metadata tags for the same piece of data. Not
really a problem for me though, haven't run into it.
Moreover,is the above raw output from the device the best way to be sure
about the fps etc ?
I think it's likely the best and most accurate. You might want to research
the exact device and v4l driver (I'm assuming you're on Linux) on
capabilities/expected output.
Yes it's Linux.
Thanks for the long reply and the time you spent on this. Of course
i have understood a few things better but i should read it again a few
more times
in order to completely get it :)
It was fun and I learned how to get output from ffprobe that I can
understand better! Hopefully, it will help others too.
I hope too! :)
This whole thing about fps started when i had audio delay problems.
The problem appeared only when i was using -c:v h264_cuvid .
And then,i somehow thought about fps and audio.
But i should post another question about the audio delay problem...
Yes, start another question/thread. I already have some ideas there too,
based on my own personal struggles.
I'm sure you will have a solution.Nevertheless I must prepare a complete
scenario.
Thanks again!
-JG
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