On Jul 17, 2025, at 22:05, yangsen5 via ffmpeg-devel <ffmpeg-devel@ffmpeg.org> wrote:
From: yangsen5 <1441923451@qq.com>
Signed-off-by: yangsen5 <1441923451@qq.com> --- libavformat/file.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libavformat/file.c b/libavformat/file.c index 6a66040b65..8099a7e931 100644 --- a/libavformat/file.c +++ b/libavformat/file.c @@ -94,6 +94,7 @@ typedef struct FileContext { int fd; int trunc; int blocksize; + int pkt_size; int follow; int seekable; #if HAVE_DIRENT_H @@ -106,6 +107,7 @@ static const AVOption file_options[] = { { "blocksize", "set I/O operation maximum block size", offsetof(FileContext, blocksize), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM }, { "follow", "Follow a file as it is being written", offsetof(FileContext, follow), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, AV_OPT_FLAG_DECODING_PARAM }, { "seekable", "Sets if the file is seekable", offsetof(FileContext, seekable), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 0, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, + { "pkt_size", "Maximum file packet size", offsetof(FileContext, pkt_size), AV_OPT_TYPE_INT, { .i64 = 262144 }, -1, INT_MAX, AV_OPT_FLAG_DECODING_PARAM | AV_OPT_FLAG_ENCODING_PARAM }, { NULL } };
@@ -313,7 +315,7 @@ static int file_open(URLContext *h, const char *filename, int flags) /* Buffer writes more than the default 32k to improve throughput especially * with networked file systems */ if (!h->is_streamed && flags & AVIO_FLAG_WRITE) - h->min_packet_size = h->max_packet_size = 262144; + h->min_packet_size = h->max_packet_size = c->pkt_size;
What's the use case?
if (c->seekable >= 0) h->is_streamed = !c->seekable; -- 2.34.1
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