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server: allow custom temp directory for ffmpeg #3564

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Merged
ggerganov merged 1 commit into from
Dec 13, 2025
+8 −3
Merged

server: allow custom temp directory for ffmpeg #3564

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11 changes: 8 additions & 3 deletions examples/server/server.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -60,6 +60,7 @@ struct server_params
std::string public_path = "examples/server/public";
std::string request_path = "";
std::string inference_path = "/inference";
std::string tmp_dir = ".";

int32_t port = 8080;
int32_t read_timeout = 600;
Expand Down Expand Up @@ -174,6 +175,7 @@ void whisper_print_usage(int /*argc*/, char ** argv, const whisper_params & para
fprintf(stderr, " --request-path PATH, [%-7s] Request path for all requests\n", sparams.request_path.c_str());
fprintf(stderr, " --inference-path PATH, [%-7s] Inference path for all requests\n", sparams.inference_path.c_str());
fprintf(stderr, " --convert, [%-7s] Convert audio to WAV, requires ffmpeg on the server\n", sparams.ffmpeg_converter ? "true" : "false");
fprintf(stderr, " --tmp-dir, [%-7s] Temporary directory for ffmpeg transcoded files\n", sparams.tmp_dir.c_str());
fprintf(stderr, " -sns, --suppress-nst [%-7s] suppress non-speech tokens\n", params.suppress_nst ? "true" : "false");
fprintf(stderr, " -nth N, --no-speech-thold N [%-7.2f] no speech threshold\n", params.no_speech_thold);
fprintf(stderr, " -ng, --no-gpu [%-7s] do not use gpu\n", params.use_gpu ? "false" : "true");
Expand Down Expand Up @@ -248,6 +250,7 @@ bool whisper_params_parse(int argc, char ** argv, whisper_params & params, serve
else if ( arg == "--request-path") { sparams.request_path = argv[++i]; }
else if ( arg == "--inference-path") { sparams.inference_path = argv[++i]; }
else if ( arg == "--convert") { sparams.ffmpeg_converter = true; }
else if ( arg == "--tmp-dir") { sparams.tmp_dir = argv[++i]; }

// Voice Activity Detection (VAD)
else if ( arg == "--vad") { params.vad = true; }
Expand Down Expand Up @@ -288,15 +291,17 @@ void check_ffmpeg_availibility() {
}
}

std::string generate_temp_filename(const std::string &prefix, const std::string &extension) {
std::string generate_temp_filename(const std::string &path, const std::string &prefix, const std::string &extension) {
auto now = std::chrono::system_clock::now();
auto now_time_t = std::chrono::system_clock::to_time_t(now);

static std::mt19937 rng{std::random_device{}()};
std::uniform_int_distribution<long long> dist(0, 1e9);

std::stringstream ss;
ss << prefix
ss << path
<< std::filesystem::path::preferred_separator
<< prefix
<< "-"
<< std::put_time(std::localtime(&now_time_t), "%Y%m%d-%H%M%S")
<< "-"
Expand Down Expand Up @@ -816,7 +821,7 @@ int main(int argc, char ** argv) {
if (sparams.ffmpeg_converter) {
// if file is not wav, convert to wav
// write to temporary file
const std::string temp_filename = generate_temp_filename("whisper-server", ".wav");
const std::string temp_filename = generate_temp_filename(sparams.tmp_dir, "whisper-server", ".wav");
std::ofstream temp_file{temp_filename, std::ios::binary};
temp_file << audio_file.content;
temp_file.close();
Expand Down
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