Recover H264 encoded ts segments that dont have PPS/SPS

[Guru Govindan]

Hi There,
I am having an issue where a lot of video footage from a security camera
was recorded without the sprop-parameters-set (SPS/PPS).

I am unable to play or transcode these ts files as it does not have SPS/PPS
values.

I tried the following by sending the h264parse the stream format but that
failed

```
gst-launch-1.0 -v filesrc location=2.ts ! tsparse ! tsdemux name=demux
demux. ! queue ! h264parse ! video/x-h264,stream-format=avc,alignment=au !
decodebin ! videoconvert ! vaapih264enc ! h264parse ! mpegtsmux
alignment=-1 ! filesink location=output.ts
```
failed with /
GstPipeline:pipeline0/GstH264Parse:h264parse0.GstPad:sink: caps =
video/x-h264, stream-format=(string)byte-stream
ERROR: from element /GstPipeline:pipeline0/GstH264Parse:h264parse0: No
valid frames found before end of stream

I then tried to split it as per keyframes and then mux it.. like below but
that failed as well

```
gst-launch-1.0 -v filesrc location=2.ts ! tsdemux name=demux ! h264parse !
splitmuxsink max-size-time=1000000000 location=segment%02d.ts mpegtsmux
name=mux ! filesink location=output.ts demux.video_0 ! queue ! mux.
```
failed with h264parse0: No valid frames found before end of stream

Since it could not find EOS.. I thoiught of sending the entire manifest..
but that didnt work as well

```
gst-launch-1.0 -v filesrc location="<manifest uri>" ! hlsdemux ! h264parse
! video/x-h264,stream-format='(string)avc,alignment=(string)au' ! mpegtsmux
! h264parse config-interval=-1 ! mpegtsmux ! filesink location=output.ts
```

Just like how we can add config-interval to a rtp stream, is there a way to
add it to a ts segment?

Best Regards,
Guru
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