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obs-ffmpeg: Check nvenc max bframe count

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Checks to make sure that the bframe count is equal to or below the
maximum number of bframes that the encoder for the codec supports.

Fixes a bug where setting bframes higher than what the encoder supports
would cause the encoder to not start up properly.
This commit is contained in:
jp9000
2022-11-01 00:45:30 -07:00
parent 1bd43220d5
commit a793748743
1 changed files with 2 additions and 1 deletions
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plugins/obs-ffmpeg/jim-nvenc.c
+2 -1
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@@ -588,7 +588,8 @@ static bool init_encoder_base(struct nvenc_data *enc, obs_data_t *settings,
config->gopLength = gop_size;
config->frameIntervalP = 1 + bf;
enc->bframes = bf;
int32_t max_bf = (int32_t)nv_get_cap(enc, NV_ENC_CAPS_NUM_MAX_BFRAMES);
enc->bframes = bf <= max_bf ? bf : max_bf;
/* lookahead */
const bool use_profile_lookahead = config->rcParams.enableLookahead;