diff mbox series

[FFmpeg-devel] avcodec/svt-av1: Set force_key_frames only when gop_size == 1

Message ID 20231003225313.407161-1-vigneshv@google.com
State Accepted
Commit e8465aa5dda03b4f30d24f192ee165f88a912762
Headers show
Series [FFmpeg-devel] avcodec/svt-av1: Set force_key_frames only when gop_size == 1 | expand

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Commit Message

Vignesh Venkat Oct. 3, 2023, 10:53 p.m. UTC
SVT-AV1 does not support requesting keyframes at arbitrary points
by setting pic_type to EB_AV1_KEY_PICTURE. So set force_key_frames
to 1 only when gop_size == 1.

Please see the comments in
https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/2076 for a bit more
details.

Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
---
 libavcodec/libsvtav1.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Comments

Ronald S. Bultje Oct. 4, 2023, 5:23 p.m. UTC | #1
Hi,

On Tue, Oct 3, 2023 at 6:53 PM Vignesh Venkatasubramanian via ffmpeg-devel <
ffmpeg-devel@ffmpeg.org> wrote:

> SVT-AV1 does not support requesting keyframes at arbitrary points
> by setting pic_type to EB_AV1_KEY_PICTURE. So set force_key_frames
> to 1 only when gop_size == 1.
>
> Please see the comments in
> https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/2076 for a bit more
> details.
>
> Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
> ---
>  libavcodec/libsvtav1.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/libavcodec/libsvtav1.c b/libavcodec/libsvtav1.c
> index 5015169244..8d2c7f3be4 100644
> --- a/libavcodec/libsvtav1.c
> +++ b/libavcodec/libsvtav1.c
> @@ -253,8 +253,13 @@ static int config_enc_params(EbSvtAv1EncConfiguration
> *param,
>      // In order for SVT-AV1 to force keyframes by setting pic_type to
>      // EB_AV1_KEY_PICTURE on any frame, force_key_frames has to be set.
> Note
>      // that this does not force all frames to be keyframes (it only
> forces a
> -    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE).
> -    param->force_key_frames = 1;
> +    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE). As of now,
> SVT-AV1
> +    // does not support arbitrary keyframe requests by setting pic_type to
> +    // EB_AV1_KEY_PICTURE, so it is done only when gop_size == 1.
> +    // FIXME: When SVT-AV1 supports arbitrary keyframe requests, this
> code needs
> +    // to be updated to set force_key_frames accordingly.
> +    if (avctx->gop_size == 1)
> +        param->force_key_frames = 1;
>
>      if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
>          param->frame_rate_numerator   = avctx->framerate.num;
> --
> 2.42.0.582.g8ccd20d70d-goog
>

Seems reasonable to me.

Can you merge, or should I merge for you?

Ronald
Vignesh Venkat Oct. 4, 2023, 9:05 p.m. UTC | #2
On Wed, Oct 4, 2023 at 10:23 AM Ronald S. Bultje <rsbultje@gmail.com> wrote:
>
> Hi,
>
> On Tue, Oct 3, 2023 at 6:53 PM Vignesh Venkatasubramanian via ffmpeg-devel <ffmpeg-devel@ffmpeg.org> wrote:
>>
>> SVT-AV1 does not support requesting keyframes at arbitrary points
>> by setting pic_type to EB_AV1_KEY_PICTURE. So set force_key_frames
>> to 1 only when gop_size == 1.
>>
>> Please see the comments in
>> https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/2076 for a bit more
>> details.
>>
>> Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
>> ---
>>  libavcodec/libsvtav1.c | 9 +++++++--
>>  1 file changed, 7 insertions(+), 2 deletions(-)
>>
>> diff --git a/libavcodec/libsvtav1.c b/libavcodec/libsvtav1.c
>> index 5015169244..8d2c7f3be4 100644
>> --- a/libavcodec/libsvtav1.c
>> +++ b/libavcodec/libsvtav1.c
>> @@ -253,8 +253,13 @@ static int config_enc_params(EbSvtAv1EncConfiguration *param,
>>      // In order for SVT-AV1 to force keyframes by setting pic_type to
>>      // EB_AV1_KEY_PICTURE on any frame, force_key_frames has to be set. Note
>>      // that this does not force all frames to be keyframes (it only forces a
>> -    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE).
>> -    param->force_key_frames = 1;
>> +    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE). As of now, SVT-AV1
>> +    // does not support arbitrary keyframe requests by setting pic_type to
>> +    // EB_AV1_KEY_PICTURE, so it is done only when gop_size == 1.
>> +    // FIXME: When SVT-AV1 supports arbitrary keyframe requests, this code needs
>> +    // to be updated to set force_key_frames accordingly.
>> +    if (avctx->gop_size == 1)
>> +        param->force_key_frames = 1;
>>
>>      if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
>>          param->frame_rate_numerator   = avctx->framerate.num;
>> --
>> 2.42.0.582.g8ccd20d70d-goog
>
>
> Seems reasonable to me.
>
> Can you merge, or should I merge for you?
>

Thanks Ronald. I don't have commit access. Can you please merge it?

> Ronald
Ronald S. Bultje Oct. 5, 2023, 8:06 p.m. UTC | #3
Hi,

On Wed, Oct 4, 2023 at 5:05 PM Vignesh Venkat <vigneshv@google.com> wrote:

> On Wed, Oct 4, 2023 at 10:23 AM Ronald S. Bultje <rsbultje@gmail.com>
> wrote:
> >
> > Hi,
> >
> > On Tue, Oct 3, 2023 at 6:53 PM Vignesh Venkatasubramanian via
> ffmpeg-devel <ffmpeg-devel@ffmpeg.org> wrote:
> >>
> >> SVT-AV1 does not support requesting keyframes at arbitrary points
> >> by setting pic_type to EB_AV1_KEY_PICTURE. So set force_key_frames
> >> to 1 only when gop_size == 1.
> >>
> >> Please see the comments in
> >> https://gitlab.com/AOMediaCodec/SVT-AV1/-/issues/2076 for a bit more
> >> details.
> >>
> >> Signed-off-by: Vignesh Venkatasubramanian <vigneshv@google.com>
> >> ---
> >>  libavcodec/libsvtav1.c | 9 +++++++--
> >>  1 file changed, 7 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/libavcodec/libsvtav1.c b/libavcodec/libsvtav1.c
> >> index 5015169244..8d2c7f3be4 100644
> >> --- a/libavcodec/libsvtav1.c
> >> +++ b/libavcodec/libsvtav1.c
> >> @@ -253,8 +253,13 @@ static int
> config_enc_params(EbSvtAv1EncConfiguration *param,
> >>      // In order for SVT-AV1 to force keyframes by setting pic_type to
> >>      // EB_AV1_KEY_PICTURE on any frame, force_key_frames has to be
> set. Note
> >>      // that this does not force all frames to be keyframes (it only
> forces a
> >> -    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE).
> >> -    param->force_key_frames = 1;
> >> +    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE). As of
> now, SVT-AV1
> >> +    // does not support arbitrary keyframe requests by setting
> pic_type to
> >> +    // EB_AV1_KEY_PICTURE, so it is done only when gop_size == 1.
> >> +    // FIXME: When SVT-AV1 supports arbitrary keyframe requests, this
> code needs
> >> +    // to be updated to set force_key_frames accordingly.
> >> +    if (avctx->gop_size == 1)
> >> +        param->force_key_frames = 1;
> >>
> >>      if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
> >>          param->frame_rate_numerator   = avctx->framerate.num;
> >> --
> >> 2.42.0.582.g8ccd20d70d-goog
> >
> >
> > Seems reasonable to me.
> >
> > Can you merge, or should I merge for you?
> >
>
> Thanks Ronald. I don't have commit access. Can you please merge it?
>

Done.

Ronald
diff mbox series

Patch

diff --git a/libavcodec/libsvtav1.c b/libavcodec/libsvtav1.c
index 5015169244..8d2c7f3be4 100644
--- a/libavcodec/libsvtav1.c
+++ b/libavcodec/libsvtav1.c
@@ -253,8 +253,13 @@  static int config_enc_params(EbSvtAv1EncConfiguration *param,
     // In order for SVT-AV1 to force keyframes by setting pic_type to
     // EB_AV1_KEY_PICTURE on any frame, force_key_frames has to be set. Note
     // that this does not force all frames to be keyframes (it only forces a
-    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE).
-    param->force_key_frames = 1;
+    // keyframe with pic_type is set to EB_AV1_KEY_PICTURE). As of now, SVT-AV1
+    // does not support arbitrary keyframe requests by setting pic_type to
+    // EB_AV1_KEY_PICTURE, so it is done only when gop_size == 1.
+    // FIXME: When SVT-AV1 supports arbitrary keyframe requests, this code needs
+    // to be updated to set force_key_frames accordingly.
+    if (avctx->gop_size == 1)
+        param->force_key_frames = 1;
 
     if (avctx->framerate.num > 0 && avctx->framerate.den > 0) {
         param->frame_rate_numerator   = avctx->framerate.num;