# RFC: A file format to store generic raw image/video files
Context: Developers and researchers often want to use raw image/video
files, as they avoid the effects of encoding. Dealing with raw
image/video files is typically done using raw files. This is an
operational pain point, as the metadata a
On Thu, Nov 10, 2022 at 7:36 PM "zhilizhao(赵志立)" wrote:
>
> Ping for review.
>
> > On Oct 24, 2022, at 11:16, Zhao Zhili wrote:
> >
> > From: Zhao Zhili
> >
> > Firstly, some bugs were fixed (patch 1-4).
> >
> > Patch 5 and 6 make mediacodec_wrapper support Java MediaCodec and NDK
> > MediaCodec
From: Chema Gonzalez
Allows demuxing UHD F10: fps yuvj420p files
ffmpeg (at HEAD as of now) is creating this:
```
$ ffmpeg -y -i source.265 /tmp/foo.y4m >& /dev/null
...
$ xxd /tmp/raw.y4m |less
: 5955 5634 4d50 4547 3220 5731 3932 3020 YUV4MPEG2 W1920
001
Hi,
On Wed, Sep 28, 2022 at 8:09 AM Anton Khirnov wrote:
> > if (isBayer(srcFormat)) {
> > +c->dst_slice_align = 2;
>
> IMO it's better to put this next to the line that sets dst_slice_align
> for non-bayer cases, makes it clearer what the final value is.
Are you suggesting setting `
Yeah, it does.
Will send a patch.
Thanks!
-Chema
On Mon, Sep 26, 2022 at 12:58 AM Anton Khirnov wrote:
>
> Quoting Chema Gonzalez (2022-09-25 17:54:16)
> > Hi,
> >
> > I found an issue while playing with Bayer pixel format conversions.
> >
> > ```
> >
Bayer sources are read in groups of 2 lines (e.g. for a
BGGR flavor, the first row contains only B and G samples,
while the second row contains only G and R samples). They
need to be read as a whole.
Tested:
``
$ echo -ne
'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
Hi,
I found an issue while playing with Bayer pixel format conversions.
```
$ echo -ne
'\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff
ping
-Chema
On Mon, Sep 12, 2022 at 4:50 PM Chema Gonzalez wrote:
>
> Note that the motion information includes subpel motion information
>
> This was likely forgotten in 56bdf61baa04c4fd8d165f34499115ce0aa97c43.
>
> Tested:
> ```
> $ make examples -j
> ...
> $ d
Note that the motion information includes subpel motion information
This was likely forgotten in 56bdf61baa04c4fd8d165f34499115ce0aa97c43.
Tested:
```
$ make examples -j
...
$ doc/examples/extract_mvs in.264 | head -40 | \
csvcut -C framenum,source,flags |csvlook
| blockw | blockh | srcx | s
rames in the next email.
-Chema
On Sat, Sep 3, 2022 at 5:08 AM Ronald S. Bultje wrote:
>
> Hi Chema,
>
> On Fri, Sep 2, 2022 at 11:12 AM Chema Gonzalez wrote:
>>
>> So is there a filter that already dumps this information?
>
>
> Yes, it's called codecview. W
Hi again,
On Fri, Sep 2, 2022 at 2:05 PM Paul B Mahol wrote:
> > > > So is there a filter that already dumps this information?
> > > Not in text but in visual, note that you can write own code that uses
> > > library to dump MV as text, because MV are exported when certain flag is
> > > enabled.
Hi again,
On Fri, Sep 2, 2022 at 9:10 AM Paul B Mahol wrote:
>
> On Fri, Sep 2, 2022 at 5:12 PM Chema Gonzalez wrote:
>
> > So is there a filter that already dumps this information?
> >
>
> Not in text but in visual, note that you can write own code that uses
&
So is there a filter that already dumps this information?
Thanks,
-Chema
On Fri, Sep 2, 2022 at 12:56 AM Paul B Mahol wrote:
>
> On Thu, Sep 1, 2022 at 8:43 PM Chema Gonzalez wrote:
>
> > Hi Paul,
> >
> > Can you please describe how you can get the MV values?
&g
Hi Paul,
Can you please describe how you can get the MV values?
Thanks,
-Chema
On Thu, Sep 1, 2022 at 10:52 AM Paul B Mahol wrote:
>
> On Thu, Sep 1, 2022 at 5:06 PM Chema Gonzalez wrote:
>
> > Hi,
> >
> > All the other debug modes (qp, skip, mb_type) use the sa
Hi,
All the other debug modes (qp, skip, mb_type) use the same approach.
-Chema
On Thu, Sep 1, 2022 at 6:30 AM Ronald S. Bultje wrote:
>
> Hi,
>
> On Wed, Aug 31, 2022 at 7:10 PM Chema Gonzalez wrote:
>>
>> Add a new debug mode ("motion_vec") that prints t
Add a new debug mode ("motion_vec") that prints the values of the
motion vectors (MV).
Note that, in order to give the same weight to MV from bigger
blocks, we may print each MV pair more than once.
Tested:
```
$ ./ffprobe -v quiet -show_frames -debug motion_vec /tmp/in.264 \
2>&1 >/dev/null
Add a new debug mode ("motion_vec") that prints the values of the
motion vectors (MV).
Note that, in order to give the same weight to MV from bigger
blocks, we may print each MV pair more than once.
Tested:
```
$ ./ffprobe -v quiet -show_frames -debug motion_vec /tmp/in.264 2>&1 >/dev/null
...
[
Add a new debug mode ("motion_vec") that prints the values of the
motion vectors (MV).
Note that, in order to give the same weight to MV from bigger
blocks, we may print each MV pair more than once.
Tested:
```
$ ./ffprobe -v quiet -show_frames -debug motion_vec /tmp/in.264 2>&1 >/dev/null
...
[
Add a new debug mode ("motion_vec") that prints the values of the
motion vectors (MV).
Note that, in order to give the same weight to MV from bigger
blocks, we may print each MV pair more than once.
Tested:
```
$ ./ffprobe -v quiet -show_frames -debug motion_vec /tmp/in.264 2>&1 >/dev/null
...
[
This is useful if you want to see the motion vectors (MV)
generated by an encoder. I used ffmpeg debug mode, which is
also used by similar functionality, like the QP value dumper.
Chema Gonzalez (1):
avcodec/mpegutils: add motion_vec debug mode
libavcodec/avcodec.h | 1 +
libavcodec
---
doc/utils.texi | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/doc/utils.texi b/doc/utils.texi
index 232a0608b3..627b55d154 100644
--- a/doc/utils.texi
+++ b/doc/utils.texi
@@ -1073,13 +1073,13 @@ indication of the corresponding powers of 10 and of 2.
@item T
10^1
Simple SI/binary fixes.
Chema Gonzalez (1):
doc: fix binary values of SI prefixes
doc/utils.texi | 8
1 file changed, 4 insertions(+), 4 deletions(-)
--
2.37.2
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From: Chema Gonzalez
Example:
$ ffplay -vf
"drawtext=fontfile=/usr/share/fonts/truetype/ubuntu-font-family/UbuntuMono-R.ttf:text='%{pict_type}
%{pts\:hms} %{pts\:raw} %{eif\:n\:u}':
fontcolor=white@0.8:fontsize=40:x=7:y=680:box=1:boxcolor=black@0.8,showinfo"
file.ts
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