Prevent the fifo used in encoding VPx videos from filling up and stopping encode when it reaches 21845 items, which happens when the video has more than that number of frames.
This problem occurs when performing the first pass of a 2-pass encode, as otherwise, the fifo is properly drained, preventing it from overflowing. Problem is fixed by manually draining the fifo when performing the first pass of a 2-pass encode. Fixes the regression originally introduced in 5bda4ec6c3cb6f286bb40dee4457c3c26e0f78cb Signed-off-by: David Lemler <david@lemler.family> --- libavcodec/libvpxenc.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/libavcodec/libvpxenc.c b/libavcodec/libvpxenc.c index 8833df2d68..e4ab13e6ab 100644 --- a/libavcodec/libvpxenc.c +++ b/libavcodec/libvpxenc.c @@ -1452,6 +1452,12 @@ static int queue_frames(AVCodecContext *avctx, struct vpx_codec_ctx *encoder, memcpy((uint8_t*)stats->buf + stats->sz, pkt->data.twopass_stats.buf, pkt->data.twopass_stats.sz); stats->sz += pkt->data.twopass_stats.sz; + /* Drain the fifo if it has any items in it to prevent it from + filling up when performing the first pass of a 2-pass encode if + the video has more than 21845 frames. */ + if (av_fifo_can_read(ctx->fifo) > 0) { + av_fifo_drain2(ctx->fifo, 1); + } break; } case VPX_CODEC_PSNR_PKT: -- 2.41.0.windows.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".